Animal feed or animal feed additive containing Canadin and / or Canadin derivative

Abstract

Animal feed, drinking water or animal feed additive containing Canadin and / or a Canadin derivative.

Description

Technical area

[0001] The invention relates to an animal feed additive for optimizing the meat-to-fat ratio in farm animals. State of the art

[0002] Foods of animal origin represent an important component of the human diet. Over the past 20 years, demand has increased for meat with a high muscle-to-fat ratio, as this type of meat is considered particularly healthy. It contains less fat, especially cholesterol, which is considered a health concern, but a higher proportion of protein.

[0003] The decline in fat content is most noticeable in pork. While 100 grams of pork fillet contained just under 9 grams of fat in 1991, today it's just 2 grams.

[0004] A high proportion of muscle meat and a low fat content are used as the basis for various meat quality standards. For example, so-called "butcher pigs" must have a muscle meat content of at least 60% and a maximum fat content of 12 to 14 mm. A maximum of 16 to 20 mm of fat is permitted, depending on the meat size, to qualify for commercial class E (55% and above), while 22 to 26 mm of fat, depending on the meat size, represents the boundary between commercial class U (50 to 55%) and class R (45 to 50%). The fat content has a significant influence on the classification of meat into the various commercial or quality classes, as the fat content is weighted 4.5 times more heavily than the meat content in the current formula. If the fat content increases by 2 mm, the meat content must therefore increase by 9 mm to avoid a deterioration in the meat classification.

[0005] However, the methods used to achieve an optimal, i.e., high, meat-to-fat ratio are associated with various disadvantages. They often result in a significant loss of usable animal material and / or increased production costs.

[0006] For example, it's possible to design meat cuts in such a way that the adjacent fat is trimmed away from the outset. However, the trimmed fat has a significantly lower market value, so the cost of the feed used to build it up is considered wasted or at least suboptimal. Fat located within the muscle tissue cannot be removed in this way.

[0007] Another option for producing meat with the desired high meat-to-fat ratio is to use breeds with optimized meat for this purpose. However, this can be associated with various disadvantages: existing housing or husbandry systems may be unsuitable for these breeds; the breeds in question may be expensive or prone to disease and / or unsuitable for the prevailing climate. Adapting housing systems to the needs of these specific breeds can be associated with considerable costs and reduces the farmer's flexibility to meet changes in customer demand at short notice.

[0008] Another option is to slaughter very young animals that have barely put on any fat. However, this can result in the animals being slaughtered before the age at which optimal growth (measured in terms of the amount of meat produced per unit of feed) is reached. Production efficiency decreases and costs increase.

[0009] Providing additional outdoor space can increase the proportion of muscle meat, but it also significantly increases production costs.

[0010] Another approach is to adjust feeding to achieve a high meat-to-fat ratio and / or the lowest possible fat content, within the genetic limits of the breed used. For example, feeds with a particularly high protein and amino acid content, especially lysine, are used. Furthermore, the energy content of the feed can be reduced during fattening to prevent the animals from becoming obese. However, this approach also has limitations, e.g., due to the price of the feed components or additives and the physiological feed requirements of the respective animal species. Technical problem and basic solutions

[0011] The invention is therefore based on the object of providing an alternative or improved animal feed or drinking water or a corresponding animal feed additive.

[0012] The objects underlying the invention are achieved with the features of the independent patent claims. Embodiments of the invention are specified in the dependent claims. The embodiments and examples listed below can be freely combined with one another, provided they are not mutually exclusive.

[0013] In one aspect, the invention relates to an animal feed, drinking water or animal feed additive comprising Canadin and / or comprising a Canadin derivative.

[0014] Several trials have shown that feeding farm animals such as pigs feed containing canadin or canadin derivatives has a significantly positive effect on the muscle-to-fat ratio and fat content: the fat content decreases significantly, while the muscle content increases. This provides livestock farmers with another means of altering the muscle-to-fat ratio, in addition to or as an alternative to state-of-the-art methods, or of reducing the fat content in order to improve meat quality. For example, by adding canadin to the feed during fattening, livestock farmers could ensure that the animals continue to receive feed with a conventional energy content and thus reach slaughter weight more quickly than animals that were fed low-energy feed during fattening, without the lean meat content in the slaughtered animal decreasing.Alternatively, by adding Canadin or a Canadin derivative to a low-energy feed during the finishing period, the farmer could ensure that the animals have a particularly high proportion of lean meat, a particularly low fat content, and a particularly high muscle-to-fat ratio at the end of the fattening period. This ratio would be higher than could be achieved by administering low-energy feed alone.

[0015] Compared to at least some of the methods known in the prior art, the administration of feed or drinking water containing Canadin or Canadin derivatives has the particular advantage of greater flexibility: the applicant has determined that Canadin or Canadin derivatives increase the muscle-to-fat ratio in a large number of animal species, including cattle, pigs, chickens, and others. To achieve a desired, high muscle-to-fat ratio, it is therefore not necessary to select a specific animal breed for fattening and adapt the husbandry conditions to this. Rather, the animal farmer can flexibly control and adjust the lean meat content and fat content of the animals by adding Canadin over a period of several months, depending on the anticipated wishes of the customer.

[0016] In addition, the livestock farmer can react flexibly to various unforeseeable situations during fattening. For example, towards the end of the fattening period, a significant proportion of the animals in a stable may become infected with a pathogen that weakens the infected animals. In such a situation, it is not advisable to agree on low-energy feed, as the infected animals need energy to fight the pathogen. However, in large stables, feed distribution is handled centrally. If high-calorie feed is given to animals not infected by the pathogen, there is a risk that the healthy animals will become obese, i.e., have an undesirably high fat content.In such a situation, the livestock farmer must therefore weigh the risk of further worsening the health of already infected animals and increasing the risk of the pathogen spreading to other animals by administering low-energy feed during the finishing phase, against the risk of helping the infected animals but impairing the meat quality of non-affected animals by administering high-energy feed. In such situations, administering feed or drinking water containing Canadin or a Canadin derivative, optionally in combination with medications for treating an animal disease (such as coccidiosis, diarrhea, Newcastle disease, etc.), can ensure high meat quality even in situations where high-energy feed must be administered due to the presence or suspicion of disease.Even in other situations where there is a risk that the meat quality in terms of fat and muscle meat content in the slaughtered animals will be too low, e.g. due to the sex, breed of the animals, age, state of health or the feed used, feed or drinking water containing Canadin can ensure that there is a significant shift in the muscle-to-fat ratio in favor of the muscle content and to the detriment of the fat content.

[0017] Canadine, also known as tetrahydroberberine or by CAS number 522-97-4, is a benzylisoquinoline alkaloid (BIA) from the structural subgroup of protoberberine alkaloids. Like the other protoberberine alkaloids, canadine contains a benzylisoquinoline structural unit. Canadine thus belongs to the group of alkaloids.

[0018] A canadin derivative is understood here to be a physiologically acceptable substance derived from canadin as the parent compound, i.e., containing the basic structure of canadin, but also one or more functional groups. In particular, the canadin derivative can be a methylated form of canadin with an identical or similar effect on the meat and fat content of an animal as canadin. For example, the canadin derivative can be a singly or multiply methylated variant of canadin. In particular, the canadin derivative can be singly methylated canadin, in particular N-methylcanadin. For example, N-methylcanadin can be (S)-N-methylcanadin with the CHEBI number 16512.

[0019] According to one embodiment, it is animal feed or drinking water with a concentration of at least 0.16 µg Canadin and / or Canadin derivative per kg of animal feed or drinking water, preferably at least 1.6 µg Canadin and / or Canadin derivative per kg of animal feed or drinking water, e.g. from 1 µg to 50 µg Canadin and / or Canadin derivative per kg of animal feed or drinking water.

[0020] According to another embodiment, it is an animal feed additive which, when added as intended to an animal feed or to a drinking water, results in an animal feed or drinking water with a concentration of at least 0.16 µg Canadin and / or Canadin derivative per kg of animal feed or drinking water, preferably at least 1.6 µg Canadin and / or Canadin derivative per kg of animal feed or drinking water, e.g. from 1 µg to 50 µg Canadin and / or Canadin derivative per kg of animal feed or drinking water.

[0021] For example, the animal feed additive can be a powder or granule containing canadin and / or a canadin derivative, optionally one or more other alkaloids, and typically other substances, e.g. fillers, minerals, vitamins, and / or flavorings. The animal feed additive can also contain plant material, e.g. ground plant parts such as leaves or stems, and / or plant extracts, which typically contain the alkaloids. The fillers facilitate the dosing and homogeneous addition of the animal feed additive to a significantly larger amount of animal feed or water, so that the final concentration of the active ingredients can be adapted to the needs of the animals and the respective application situation. The animal feed additive can also be in liquid form.The latter is particularly advantageous if the additive is to be mixed with water to provide a Canadin-containing drinking water of a specific concentration. For example, the Canadin and / or Canadin derivative can be kept in solution by lowering the pH of the liquid feed additive (e.g., using organic acids such as citric acid).

[0022] According to one embodiment, the animal feed, the animal feed additive or the drinking water contains barber ruby.

[0023] This embodiment is based on the surprising observation that the use of a combination of Canadin and / or a Canadin derivative in combination with Berberrubine can be particularly advantageous, as Berberrubine appears to enhance the effect of Canadin or the Canadin derivative. By administering a combination of both substances, a significantly greater improvement in the muscle-to-fat ratio was achieved than was observed with the administration of Canadin alone. The storage stability of the meat was also improved.

[0024] For example, barberry ruby ​​can be contained in the form of plant material in animal feed, animal feed additives, or drinking water. For example, the plant material can be material from the plants Thalictrum aquilegifolium, Berberis heteropoda, material from branches of Berberis actinacantha, or from the stems of Berberis darwinii or Berberis valdiviana. Berberry ruby ​​can also be contained in sufficient concentrations from Berberis vulgaris, Thalictrum polygamum, Fibraurea chloroleuca (Berberidaceae, Ranunculaceae, Menispermaceae), Macleaya cordata, and other plants, or it can be obtained in the form of an extract. For example, the extract can be an aqueous-ethanolic extract from plant material.

[0025] According to one embodiment, the ratio of the canadin component (canadin and / or canadin derivative) to berberrubine in the animal feed, animal feed additive and / or drinking water is in the range of 1:5 to 5:1, e.g. in the range of 1:1.2 to 1.2:1.

[0026] According to embodiments of the invention, the animal feed, animal feed additive, or drinking water contains dried parts of the plant Macleaya cordata, e.g., leaves and / or roots, flowers, capsules, and / or parts of the stem. In particular, the flowers and capsules, but also the roots, contain canadin and, in particular, a high proportion of N-methyl-canadin. By combining leaves with different proportions of flowers, capsules, and / or roots, the desired concentration of canadin and N-methyl-canadin can be easily adjusted depending on the intended use and the active ingredient content of the plant. The dried parts are preferably ground into a powder beforehand to simplify dosing and mixing.

[0027] According to one embodiment, the animal feed or drinking water contains at least 1 µg of berber ruby ​​per kg of animal feed or drinking water, in particular at least 10 µg of berber ruby ​​per kg of animal feed or drinking water. However, the berber ruby ​​concentration can also be higher, e.g., in the range of 1-400 µg of berber ruby ​​per kg of animal feed or drinking water.

[0028] According to a further embodiment, the animal feed additive has a barbary ruby ​​concentration such that, when added as intended to animal feed or drinking water, the animal feed or drinking water contains at least 1 µg of barbary ruby ​​per kg of animal feed or drinking water, in particular at least 10 µg of barbary ruby ​​per kg of animal feed or drinking water. Concentrations of 1-400 µg of barbary ruby ​​per kg of animal feed or drinking water are also possible.

[0029] According to some embodiments, the animal feed or drinking water or the animal feed additive used for their production may contain further alkaloids such as sanguinarine and / or chelerythrine, which may have various positive effects, e.g. an improvement in feed utilization.

[0030] According to one embodiment, the animal feed, animal feed additive, or drinking water is intended for administration to farm animals, pets, or companion animals. The animals may, in particular, be poultry, pigs, cattle, sheep, goats, horses, and / or rabbits.

[0031] According to some embodiments, the canadin contained in the animal feed, drinking water or animal feed additive is canadin produced synthetically or biotechnologically, in particular microbiotechnologically.

[0032] For example, canadine can be obtained in several steps from a disubstituted phenylethylamine and a disubstituted benzaldehyde, as described in Li W et al., "Total Synthesis of (-)-Canadine, (-)-Rotundine, (-)-Sinactine, and (-)-Xylopinine Using a Last-Step Enantioselective Ir-Catalyzed Hydrogenation," Journal Organical Chemistry 2021 Jun 18;86(12):8143-8153. doi: 10.1021 / acs.joc.1c00602. Epub 2021 Jun 2. PMID: 34076443. The use of synthetic canadine has the advantage of facilitating precise dosing. When using plant material, additional steps for concentration, purification and / or determination of the canadin concentration in the plant material used may be necessary.

[0033] According to other embodiments, it is canadin which is present as a component of plant material, in particular a plant extract, in animal feed, drinking water or animal feed additive.

[0034] For example, the animal feed, animal feed additive, or drinking water may contain plant material from the Canadian orange root or a plant of the Papaveraceae family, such as Corydalis yanhusuo and Corydalis turtschaninovii. According to another example, the plant material may come wholly or partially from the white feather poppy (Macleaya cordata), particularly from the aerial part, i.e., stems and / or leaves.

[0035] According to embodiments, the animal feed or drinking water contains at least 10 mg of Macleaya cordata leaves per kg of animal feed or drinking water, in particular at least 100 mg of Macleaya cordata leaves per kg of animal feed or drinking water. Preferably, the animal feed or drinking water is free of other plant organs of Macleaya cordata (such as roots, stems, flowers, etc.) or contains these other plant organs in an amount of less than 20%, in particular less than 10%, e.g. less than 5% or less than 1% of the proportion of Macleaya cordata leaves per kg of animal feed or drinking water. The composition of the animal feed additive and the amount of Macleaya cordata leaves in the additive is selected such that, when dosed as intended, an appropriate animal feed or drinking water is obtained. This can be advantageous because M.cordata leaves contain a comparatively high concentration, particularly of N-methyl-canadine, and the leaves make up a large part of the biomass of M. cordata plants and are easy to process (e.g., pulverize) and distribute homogeneously.

[0036] According to some embodiments, the canadine derivative contained in the animal feed, drinking water, or animal feed additive is a synthetic, biotechnologically, and / or microbiotechnologically produced canadine derivative. For example, a production process for N-methyl-canadine is described in European patent application EP3221461A1.

[0037] According to embodiments of the invention, the animal feed, drinking water or animal feed additive contains a mixture of Canadin and the Canadin derivative.

[0038] According to embodiments of the invention, the animal feed, drinking water or animal feed additive contains a mixture of synthetic and / or biotechnologically produced canadin and / or canadin of plant origin. Additionally or alternatively, the animal feed, drinking water or animal feed additive can be a mixture of the synthetic and / or biotechnologically produced canadin derivative and / or the canadin derivative of plant origin. For example, a desired active ingredient concentration can be specifically adjusted using a mixture of synthetic and plant-based active ingredients, so that natural fluctuations in the active ingredient content of plants can be compensated for. However, it is also possible, e.g., by appropriately selecting the proportion of various plant organs (leaves, stems, roots, flowers, etc.), to obtain a desired active ingredient concentration on a purely plant basis.

[0039] According to some embodiments, the canadin, the canadin derivative and / or the berberrubine is present in the animal feed, drinking water or animal feed additive as a physiologically acceptable salt, in particular as chloride or sulfate.

[0040] Administration in the form of salts may have the advantage of stabilizing the alkaloid. This is believed to be because the salt anion prevents the attachment of hydroxyl ions, which can inactivate the alkaloid.

[0041] According to some embodiments, the animal feed, drinking water or animal feed additive is one for reducing the fat content in the animal body and / or carcass.

[0042] According to some embodiments, the animal feed, drinking water, or animal feed additive is one for increasing the muscle-to-fat ratio in animal meat. According to some embodiments, the animal feed, drinking water, or animal feed additive is one for use as a medicament, e.g., an animal feed, drinking water, or animal feed additive for treating obesity, muscle weakness, or pathologically elevated oxidative stress.

[0043] According to some embodiments, the animal feed, drinking water or animal feed additive is one designed to increase the storage life of the meat of slaughtered animals.

[0044] According to some embodiments, the animal feed, drinking water or animal feed additive is one for the preventive or acute treatment of oxidative stress in the tissue of animals, in particular during fattening.

[0045] In a further aspect, the invention relates to an animal feed, drinking water, or animal feed additive containing berberrubine. According to some embodiments, the animal feed additionally contains canadin and / or a canadin derivative. The dosage, concentration specifications, uses, and other properties described here for the canadin-containing animal feed, drinking water, or animal feed additive also apply, according to embodiments, to the animal feed, drinking water, or animal feed additive containing berberrubine (without canadin and without the canadin derivative, or optionally supplemented with canadin and / or the canadin derivative).

[0046] In a further aspect, the invention relates to a use of an animal feed, drinking water or animal feed additive according to one of the embodiments described here for reducing the fat content in the animal body and / or in the carcass of the animals.

[0047] In a further aspect, the invention relates to a use of an animal feed, drinking water or animal feed additive according to one of the embodiments described here for increasing the muscle-to-fat ratio in the meat of animals and / or in the carcass of the animals.

[0048] In a further aspect, the invention relates to a use of an animal feed, drinking water or animal feed additive according to one of the embodiments described here for reducing the fat content in the meat of animals and / or in the carcass of the animals.

[0049] In a further aspect, the invention relates to a use of an animal feed, drinking water or animal feed additive according to one of the embodiments described here for increasing the storage life of the meat of slaughtered animals.

[0050] In a further aspect, the invention relates to the use of an animal feed, drinking water, or animal feed additive according to one of the embodiments described here for the preventive or acute treatment of oxidative stress in animal tissue, particularly during fattening. In particular, said animal feed, drinking water, or animal feed additive can be used for the preventive or acute treatment of pathological, i.e., medically treatable, oxidative stress in animal tissue.

[0051] Oxidative stress is a metabolic condition in an organism in which an excess of reactive oxygen species (ROS) leads to damage to the affected cells. These reactive oxygen species are formed during metabolic processes such as the respiratory chain. Examples of such compounds include the superoxide anion radical O2. -, hydrogen peroxide (H2O2), and the hydroxyl radical ·OH. Normally, a cell is capable of neutralizing a certain amount of reactive oxygen species. For this purpose, reducing substances are produced and stored. Oxidative stress is such an imbalance between oxidizing and reducing substances that this normal repair and detoxification function of the cell is overwhelmed, and consequently, all cellular and extracellular macromolecules can be damaged.

[0052] The consequences of severe oxidative stress include lipid peroxidation, protein oxidation, and DNA damage. These three processes are considered to be contributing factors to the aging process and deteriorating health. Some forms of severe oxidative stress are considered pathological physiological conditions requiring veterinary treatment, as they severely limit the growth and performance of animals, similar to many well-known animal diseases such as avian influenza, calf diarrhea, or coccidiosis.

[0053] Severe, particularly pathological, oxidative stress occurs when cellular metabolism is significantly disrupted. This can be caused, for example, by a diet low in vital nutrients, poor housing conditions, infections, inflammation, and other health problems.

[0054] In some embodiments, the animal feed, drinking water, or animal feed additive is used to improve various meat parameters such as fat content, fat-to-muscle ratio, storage stability, etc. In some embodiments, the animal feed, drinking water, or animal feed additive is used as a medicine, e.g., for the treatment of obesity, muscle weakness, or a poor general condition due to high levels of oxidative stress in tissue. These problems may be signs of aging or be caused by poor or poorly balanced feed. Medicinal uses are particularly beneficial for pets and hobby animals, but can also be successfully employed in livestock farming, e.g., in the fattening of pigs, cattle, and poultry.

[0055] In a further aspect, the invention relates to a container containing the animal feed additive and which additionally comprises an information carrier, e.g., a print or sticker, or is provided together with the information carrier (e.g., package insert). It is also possible for the information carrier to contain a reference (URL, e.g., a URL encoded in a QR code) to dosage instructions provided electronically, e.g., as a website.The information carrier (and / or the referenced electronic information carrier) specifies a dosage, i.e., a specification of the amount of animal feed additive that, when used as intended, must be added to a specific amount of animal feed or drinking water to obtain animal feed or drinking water with a concentration of canadin and / or canadin derivative and / or berberrubine, as described here for embodiments of the invention. The container may be, for example, a bucket, a can, a pouch, a sack, or significantly smaller or larger containers, depending on whether the amount is intended for medical use to treat individual pets or for regular feed addition by larger fattening farms.

[0056] In a further aspect, the invention relates to the use of an animal feed, drinking water, or animal feed additive according to one of the embodiments described here for medical purposes in animals. For example, the animal feed, drinking water, or animal feed additive can be used to treat obesity in pets requiring medical treatment, abnormally high concentrations of free oxygen radicals (oxidative stress) in tissue, or abnormally low muscle or muscle protein development.

[0057] In a further aspect, the invention relates to a use of an animal feed additive according to one of the embodiments described here for producing an animal feed or drinking water for the preventive or acute treatment of oxidative stress in the tissue of animals.

[0058] In a further aspect, the invention relates to a use of an animal feed additive according to one of the embodiments described here for producing an animal feed or drinking water for reducing the fat content in the animal body.

[0059] In a further aspect, the invention relates to a use of an animal feed additive according to one of the embodiments described here for producing an animal feed or drinking water for increasing the muscle-to-fat ratio and / or for reducing the fat content in the meat of animals.

[0060] According to embodiments, the use of the animal feed additive, animal feed, or drinking water is characterized in that, when the animal feed additive, animal feed, and / or drinking water is dosed as intended, at least 0.016 µg of Canadin and / or Canadin derivative per kg live weight is administered per day, e.g., at least 0.16 µg of Canadin and / or Canadin derivative per kg live weight, e.g., at least 1 µg of Canadin and / or Canadin derivative per kg live weight. Typically, the amount of Canadin and / or Canadin derivative administered per day does not exceed 4.8 µg of Canadin and / or Canadin derivative per kg live weight. The comparatively high concentration of Canadin or Canadin derivative of around 5 µg per kg live weight can be used particularly for the treatment of pathological physiological conditions or significantly elevated levels of oxidative stress. Even higher doses are harmless.For example, it has been observed that Canadin and / or Canadin derivative can be administered to treat particularly high oxidative stress in an amount of more than 5 µg, e.g. more than 1 mg, e.g. even more than 50 mg Canadin and / or Canadin derivative per day and kg live weight of the animal, without any undesirable side effects occurring.

[0061] It has been observed that the said low amounts of Canadin and / or Canadin derivatives are capable of improving the muscle / fat ratio and reducing the level of oxidative stress in the tissues of the animals (which is relevant for the storage life and quality of the meat).

[0062] If the said feed, drinking water or feed additive is used to treat pathological metabolic conditions requiring medical treatment, e.g. for the treatment of pathological oxidative stress, the concentration of Canadin and / or Canadin derivative per kg live weight and day can also be chosen to be significantly higher, e.g. so that the concentration is at least twice or at least five times or at least 10 times higher than the minimum concentrations specified above.

[0063] According to embodiments, the animal feed or drinking water contains at least 0.16 µg of canadin and / or canadin derivative per kg of animal feed or drinking water, in particular at least 1.6 µg of canadin and / or canadin derivative per kg of animal feed or drinking water. Typically, the animal feed or drinking water contains 0.1 to 50 µg of canadin and / or canadin derivative per kg of animal feed or drinking water. The concentration of canadin in the animal feed additive is preferably selected such that the animal feed additive, when used as intended and added to a feed or drinking water, results in an animal feed or drinking water with the above-mentioned canadin and / or canadin derivative concentrations.

[0064] Depending on the embodiment, the animal feed or drinking water also contains berber ruby.

[0065] According to some embodiments, it is animal feed or drinking water with at least 0.01 µg of berberrubine per kg of animal feed or drinking water, in particular with at least 0.1 µg of berberrubine per kg of animal feed or drinking water.

[0066] According to other embodiments, it is an animal feed additive whose berberrubine concentration is selected such that, when added as intended to an animal feed or to a drinking water, an animal feed or drinking water with at least 0.01 µg berberrubine per kg of animal feed or drinking water, in particular with at least 0.1 µg berberrubine per kg of animal feed or drinking water, results.

[0067] "Plant material" is understood here as material that is wholly or partially of plant origin. For example, the plant material may be parts of plants, e.g., powdered leaves or stems. It may also be liquid material, e.g., a plant extract, in particular an alcohol-based plant extract, e.g., an ethanol-based plant extract. Short description of the characters

[0068] In the following, embodiments of the invention are explained in more detail by way of example only, with reference to the drawings in which they are included. They show: Fig. 1 a table with results of a feeding trial with pigs; Fig. 2 a bar chart showing the result of the feeding trial according to Fig. 1; Fig. 3 a table showing the results of another feeding trial with broiler chickens; Fig. 4 a bar chart to show the results of the table in Fig. 3; Fig. 5 a bar chart showing the effect of different canadin concentrations on the protein and fat content of chicken breast meat; Fig. 6 a bar chart showing the effect of different amounts of canadine on malondialdehyde (MDA) or oxidative stress; Fig. Figure 7 shows the effect of Canadin on the chest and leg muscles of the experimental animals; Fig. 8 shows the structural formula of canadin; and Fig. Figure 9 shows the structural formula of (S)-N-methylcanadine. Detailed description

[0069] The following descriptions refer to various experiments in which a feed according to the invention was used. The corresponding advantages and efficacy also apply analogously to a drinking water with the corresponding alkaloid quantity or concentration, as well as to an animal feed additive for producing the said animal feed.

[0070] Fig. 1 shows a table with results of a feeding trial.

[0071] A total of 995 fattening pigs, including both male and female pigs, were divided into four roughly equal-sized groups. One group, designated "control," was fed a wheat-based basal diet without added canadine (or any other alkaloids) for 30 days until the day of slaughter. The group designated as the "Canadin" group received a fattening feed starting 30 days before slaughter that had the same composition as the control group's feed, but which additionally contained N-methyl-Canadin at a concentration of 35 µg N-methyl-Canadin per kg of feed. Barberrubine was not included in the feed of the Canadin group. The group designated as the "Berberrubine" group received a fattening feed starting 30 days before slaughter that had the same composition as the control group's feed, but which additionally contained Barberrubine at a concentration of 35 µg Barberrubine per kg of feed.Canadine was not included in the feed of the barberrubine group. The group, designated the "combination" group, received a fattening feed for the 30 days prior to slaughter that had the same composition as the control group's feed, but additionally contained a combination of N-methyl-canadine and berberrubine at a concentration of 35 µg N-methyl-canadine per kg feed and 35 µg berberrubine per kg feed.

[0072] The animals were fed ad libitum with the respective group feed until the day of slaughter, meaning they could consume as much food as they wanted. After slaughter, various carcass parts were measured, and the results were recorded in a table.

[0073] As a result, the use of a feed containing N-methyl-canadine resulted in a higher slaughter weight for pigs (110 kg - 112 kg). Back fat thickness decreased significantly (14.5 mm - 13 mm, -10.3%). The muscle-to-fat ratio increased significantly due to increased muscle growth and a reduction in fat content. Muscle growth was observed in the loin (+2.7%), and meat attachment to the ribs increased significantly (+2%). Muscle thickness, measured in mm, increased slightly. Overall, more muscle mass (protein) was produced with a reduced fat content.

[0074] The aforementioned positive effects were also observed in the Berbberrubin group.

[0075] It has been observed that the positive effects of N-methyl-canadine are significantly enhanced synergistically by the additional administration of berberrubine. For example, backfat thickness decreased approximately twice as much (-25.1%) when feeding a combination of N-methyl-canadine and berberrubine compared to a diet supplemented with only N-methyl-canadine.

[0076] The control group served as the basis for calculating the difference percentages

[0077] In the experiment presented here, N-methyl-canadine and berberrubine were administered in a ratio of 1:1. Further experiments have shown that other ratios also significantly enhance the effect of canadine or N-methyl-canadine, e.g., a ratio of canadine (or derivative): berberrubine of 1:1.2 to 1.2:1, or even 1:5 to 5:1.

[0078] The two alkaloids were present in the feed in the form of salts, namely canadine chloride and berberrubine chloride.

[0079] The trial shows that feeding N-methyl-Canadin to fattening pigs approximately one month before slaughter significantly reduces backfat density and also increases the lean meat content. Body areas such as loin or ribs, which already have a high muscle meat content, grow significantly better with N-methyl-Canadin than without the addition of Canadin. Animal feed containing N-methyl-Canadin therefore leads to an improvement, namely an increase, in the muscle-to-fat ratio in pigs. This positive effect is significantly enhanced by the additional administration of berberrubine.

[0080] Fig. 2 shows the results of the study with regard to Fig.1 in the form of a bar chart, which shows the relative changes compared to the control group (“difference”) in percentage values. The synergistic effect of the combined administration of N-methyl-canadine and berberrubine to reduce fat content while simultaneously increasing muscle content is clearly visible. For example, N-methyl-canadine alone reduced the proportion of back fat by 10.3%, berberrubine alone by 4.9%, but a combination of both substances resulted in a reduction of over 25%. A synergistic effect was also observed with regard to the increase in the proportion of lean meat. The chart also shows that N-methyl-canadine and berberrubine each produce corresponding positive effects on their own.

[0081] Fig.Figure 3 shows a table presenting the results of another feeding trial with chickens. 26,400 Cobb 500 chickens were divided into three equal-sized groups ("control," "Canadin," and "Candin+Berberrubin"). All three groups were fed ad libitum for 49 days. Feeding was carried out in three phases ("starter" days 1 to 10, "grower" days 11-24, "finisher" days 25-49) according to the changing feed requirements of the chickens during development. One-day-old chicks were used. The diet was based on corn, soybean meal, pureed wheat, and the respective alkaloid additive.

[0082] The diet of the Canadin group contained an additional 35 µg of Canadin per kg of feed, but no barberrubine. The diet of the Canadin+barberrubine group contained 35 µg of Canadin per kg of feed and an additional 35 µg of barberrubine per kg of feed.

[0083] The chickens were then slaughtered and various organs and carcass parts were examined more closely for fat and muscle content.

[0084] The Canadin group achieved better slaughter results, particularly in the breast, wing, and fillet areas. The intraperitoneal fat content was significantly lower in both the Canadin and Canadin+Berberrubin groups than in the control group. The fat content was 2.5% in the control group, 1.8% in the Canadin group, and only 1.5% in the Canadin+Berberrubin group. This corresponds to a difference in fat content of 28% between the Canadin and the control group. Thus, a significant improvement in the meat-to-fat ratio was observed in both chickens and pigs. In the Canadin+Berberrubin group, an additional 17% reduction in fat content was achieved compared to the Canadin group.

[0085] Overall, as with pork, it can be seen that canadine or N-methyl-canadine leads to a higher proportion of muscle meat with reduced fat content, i.e. a higher proportion of lean meat, and that this effect is enhanced by berberrubine.

[0086] Fig. 4 shows a bar chart to illustrate the Fig. 3 shows the results of the broiler chicken experiment.

[0087] Fig. Figure 5 shows the results of another experiment with broiler chickens in the form of a bar chart.

[0088] A total of 360 day-old chicks were used. The diet was based on corn, soybean meal, pureed wheat, and the additive. The experiment consisted of three growth or feeding phases: "starter" (days 1 to 10), "grower" (days 11-24), and "finisher" (days 25-42). Three experimental groups – control, two concentrations, each with 120 birds per experimental group. Feeding (ad libitum) was provided with a basal diet, which was supplemented depending on the group.

[0089] A control group, designated "control," was fed a basal feed adapted to the respective growth phase without added canadin (or any other alkaloids). The basal feed of all groups consisted essentially of corn, soybean meal, and wheat. Depending on the group, the feed may also contain the appropriate amount of alkaloids. The group designated "Canadin I" received a basal feed with the same composition as the control group's feed, but which also contained canadin at a concentration of 50 µg per kg of feed. Barberrubine was not present in the feed of any of the three groups. The group designated "Canadin II" received a basal feed with the same composition as the control group's feed, but which contained canadin at a concentration of 35 µg per kg of feed, i.e., less than in the "Canadin I" group.

[0090] The animals were fed ad libitum with the respective group feed until the day of slaughter, meaning they could consume as much food as they wanted. After slaughter, various measurements were taken on the animals' carcasses.

[0091] For example, the protein and fat content of the breast fillets of the broiler chickens was determined. In the Canadin-I group, a significantly reduced fat content and a significantly increased muscle content were detected compared to the control group.

[0092] The same effect was observed in the Canadin II group, but it was less pronounced than in the "Canadin I" group. Thus, it was shown that the beneficial effect of Canadin increases with its concentration.

[0093] Fig. Figure 6 shows that canadin can be used to treat oxidative stress. This may, for example, lead to improved shelf life.

[0094] To determine oxidative stress in a tissue, the malondialdehyde (MDA) content is generally determined. MDA is therefore a biomarker for the level of oxidative stress. Elevated MDA levels in tissue can be a sign of unfavorable living conditions during an organism's lifetime, such as improper feed, disease, or unfavorable husbandry conditions. After slaughter, however, the MDA level can also serve as an indicator of a decline in meat quality during storage. During storage, the MDA content of the tissue increases due to the penetration of atmospheric oxygen into the tissue and due to ongoing biochemical reactions. A high MDA content is therefore an indicator that the meat has been stored for a long time.

[0095] In the pectoral muscles of broilers from the in Fig.In the feeding trial described in section 4, the MDA values ​​were determined after slaughter. In each of the three groups, the MDA values ​​were determined for half of the animals after one day of storage in the refrigerator (subgroup "D1"), and for the other half after three days of storage in the refrigerator (subgroup "D3").

[0096] In the control group, the MDA content increased significantly during refrigerated storage. This indicates free oxygen radicals in the breast muscles of the control group and a sign of a decrease in storage life or aging of the carcass.

[0097] However, in the breast fillets of broiler chickens in the "Canadin I" and "Canadin II" groups, this increase was considerably lower up to the third day ("D3"). This demonstrates that the administration of Canadin was able to significantly reduce the amount of reactive oxygen species in the breast muscles of the broiler chickens and thus the storability of the carcass. It should be noted that the MDA concentration at slaughter is subject to a certain degree of variability among different animals, so that the relative increase in the MDA concentration measured on the third day D3 relative to the value measured on the first day of storage (D1) or on the day of slaughter is particularly relevant for storability. While the MDA value of the control increases by over 80% from D1 to D3, the MDA value in the two Canadin groups only increases by around 16%.

[0098] A reduction of oxidative stress by administering a feed according to embodiments of the invention thus not only promotes animal health but also leads to a significant improvement in storage stability.

[0099] Fig. Figure 7 shows the results of another trial with 300 broiler chickens divided into two approximately equal-sized groups. The control group received a basal diet without any other physiologically active additives. The Canadin group received the basal diet, which additionally contained 35 µg of Canadin per kg of feed. Feeding was carried out according to this schedule (ad libitum) during the weaning period of the broiler chickens (43-49 days after birth).

[0100] All animals were then slaughtered, and various parameters were determined. The weight of the carcass, eviscerated and excluding giblets, and the weight of the breast and leg muscles were measured. The slaughter yield and the weight of the breast muscles were significantly increased in the Canadin group compared to the control group.

[0101] The Fig. 8 and Fig. Figure 9 shows the structural formulas of canadine and (S)-N-methylcanadine, respectively. Both substances were found to have the desired effects, particularly reducing the fat content in the carcass and increasing the proportion of lean meat.

[0102] Further, complementary trials WV1, WV2, and WV3 were conducted to evaluate the efficacy of canadin alone and in combination with berberrubine. The active ingredients used in all three trials, methyl-canadin and berberrubine, were obtained by chromatographic purification of a white poppy extract.

[0103] In trial WV1, 600 pigs were divided into seven groups of approximately equal size. All groups received the same basic feed throughout the last month before slaughter, but the groups differed in the amount of canadine (methyl-canadine) or berberrubine administered. • Group GK: Control group, received neither canadin nor berberrubin • Group GCA: 5µg canadine per kg feed (no berberrubine) • Group GCB: 10µg canadine per kg feed (no berberrubine) • Group GBA: 20 µg berberrubine per kg feed (no canadine) • Group GBB: 40 µg berberrubine per kg feed (no canadine) • Group GCBA: 5 µg canadine and 20 µg berberrubine per kg feed • Group GCBB: 10 µg canadine and 40 µg berberrubine per kg feed

[0104] After slaughter, the thickness of the back fat, loin, ribs, and lean meat content of the total meat were determined. The results of the test are as follows: tissue GK Control GCA Canadian GCB Canadian GBA Barberruby GBB Barber Ruby GCBA Canadian / Barbary Ruby: GCBB Canadian / Barbary Ruby 5 µg 10 µg 20 µg 40 µg 5 µg / 20 µg 10 µg / 40 µg Back fat [mm] 14,00 12,60 12,80 12,70 12,60 11,2 11,00 Lean meat [%] 53,80 55,40 56,05 55,05 55,32 57,73 58,20 Loin [mm] 56,00 57,60 57,82 57,95 58,25 59,98 59,92 Ribs [cm2] 364,5 371,80 372,20 373,02 373,87 383,10 384,32

[0105] This corresponds to a percentage increase or decrease relative to the control group of: tissue GK Control GCA Canadian GCB Canadian GBA Barberruby GBB Barber Ruby GCBA Canadian / Barbary Ruby: GCBB Canadian / Barbary Ruby 5 µg / 20 µg 10 µg / 40 µg (K) %* %* %* %* %* %* back fat 100 -10 -8,57 -9,28 -10 -20 -21,43 [mm] Lean meat [%] 100 +2,9 +4,18 +2,3 +2,82 +7,30 +10,82 Loin [mm] 100 +2,85 +3,25 +3,48 +4,02 +7,10 +7,00 Ribs [cm2] 100 +2,0 +2,11 +2,34 +2,57 +5,10 5,44

[0106] Here, too, a synergistic, super-additive effect of the two substances was observed: for example, a reduction in back fat of -8.57% was observed in the GCB group, -10% in the GBB group, and -21.43% in the GCBB group. The lean meat content increased significantly more in the GCBA and GCBB groups than would be expected based on the effects of individual substances observed in the GCA and GBA groups, or the GCB and GBB groups.

[0107] In another trial, WV2, 600 broiler chickens were divided into seven groups of approximately equal size. All groups received the same basic feed (pelleted complete feed) throughout the initial, growth, and final fattening phases. However, the groups differed in the amount of canadine (methyl-canadine) or berberrubine administered. • Group GK: Control group, received neither canadin nor berberrubin • Group GCA: 25 µg canadine per kg feed (no barberrubine) • Group GCB: 50 µg canadine per kg feed (no berberrubine) • Group GBA: 50 µg berberrubine per kg feed (no canadine) • Group GBB: 100 µg berberrubine per kg feed (no canadine) • Group GCBA: 25 µg canadin and 50 µg berberrubin per kg feed • Group GCBB: 50 µg canadine and 100 µg berberrubine per kg feed

[0108] After slaughter, the weight of various parts of the carcass was determined (as a percentage of the total weight). The results of the test are as follows: Fabric (each % of total weight) GK Control GCA Canadian GCB Canadian GBA Barberruby GBB Barber Ruby GCBA Canadian / Barbary Ruby GCBB Canadian / Barbary Ruby 25 µg 50 µg 50 µg 100 µg 25 µg / 50 µg 50 µg / 100 µg Breast [%] 20,7 21,3 21,5 21,6 21,8 22,3 22,4 Leg [%] 21,1 21,2 21,6 21,9 21,7 22,4 22,5 Fillet [%] 4,0 4,2 4,3 4,5 4,6 4,7 5,0 Wings [%] 8,4 8,9 9,1 9,15 9,2 9,4 9,5 Liver [%] 1,7 1,8 1,8 1,8 1,8 1,8 1,8 Heart [%] 0,5 0,5 0,5 0,55 0,5 0,5 0,6 Fat (ip) [%] 2,3 -2,0 -2,0 -2,0 -1,9 -1,8 -1,4

[0109] Values ​​relative to the control group (= 100%) Tissue (each % change to GK) GK Control GCA Canadian GCB Canadian GBA Barberruby GBB Barber Ruby GCBA Canadian / Barbary Ruby GCBB Canadian / Barbary Ruby 25 µg 50 µg 50 µg 100 µg 25 µg / 50 µg 50 µg / 100 µg Breast [%] 100 +2,90 +3,86 +4,34 +5,31 +7,7 +8,21 Leg [%] 100 ±0 +2,37 +3,79 +2,84 +6,16 +6,64 Fillet [%] 100 +5,00 +7,50 +11,25 +11,50 +17,50 +25,00 Wings [%] 100 +5,96 +8,33 +8,93 +9,52 +11,90 +13,10 Liver [%] 100 +5,88 +5,88 +5,88 +5,88 +5,88 +5,88 Heart [%] 100 ±0 ±0 ±0 ±0 ±0 ±0 Fat (ip) [%] 100 -13,04 -13,04 -13,10 -17,39 -21,74 -39,13

[0110] Here, too, a significant effect on the muscle content (corresponding to the proportion of breast and fillet meat in particular) as well as on the fat content was observed. The proportion of breast meat and fillet meat was significantly increased, while the fat content decreased significantly with the administration of canadine and / or berberrubine. In the GCBB group, the fat content decreased by over 39% relative to the control group.

[0111] In another trial, WV3, 500 broiler chickens were divided into seven roughly equal-sized groups and received group-specific feed according to the trial description for WV2. After slaughter, the weight of various carcass parts was determined (as a percentage of the total weight). The results of the trial are as follows: GK Control GCA Canadian GCB Canadian GBA Barberruby GBB Barber Ruby GCBA Canadian / Barbary Ruby GCBB Canadian / Barbary Ruby 25 µg 50 µg 50 µg 100 µg 25 µg / 50 µg 50 µg / 100 µg Protein content in breast meat [%] 23,9 24,8 24,5 25,0 24,3 26,5 27,0 Fat content in breast meat [%] 1,75 1,66 1,62 1,65 1,63 1,60 1,58 GK Control GCA Canadian GCB Canadian GBA Barberruby GBB Barber Ruby GCBA Canadian / Barbary Ruby GCBB Canadian / Barbary Ruby 25 µg 50 µg 50 µg 100 µg 25 µg / 50 µg 50 µg / 100 µg Deviation of protein content in breast meat from GK [%] 100 +3,77 +2,51 +4,60 +1,67 10,88 +12,97 Deviation of fat content in breast meat from GK [%] 100 -5,14 -7,43 -5,71 -6,86 -8,57 9,71

[0112] For each of the two substances, a significant (positive) effect on muscle meat content and a significant (negative) effect on fat content were observed. Combining the two substances, especially at higher concentrations, resulted in a super-additive effect on increasing muscle content or reducing protein content.

[0113] Drinking water and feed have therefore proven particularly advantageous with the following example combinations of substance quantities (each in µg per kg feed or drinking water): Canadian alone Barber ruby ​​alone Canadian + Berber Ruby combined 5 10 5+20 10 20 25+50 20 40 50+100 25 50 50+100 40 100 50

[0114] According to some examples, the feed or drinking water may contain at least 5 µg canadin / kg feed or drinking water, in particular 5-100 µg canadin / kg feed or drinking water.

[0115] According to some examples, the feed or drinking water may contain at least 10 µg berberrubine / kg feed or drinking water, in particular 10-150 µg berberrubine / kg feed or drinking water.

[0116] According to some examples, the feed or drinking water may contain a combination of at least 5 µg canadine and at least 10 µg berberrubine / kg feed or drinking water. For example, the feed or drinking water may contain a combination of at least 1 µg canadine and at least 1 µg berberrubine / kg feed or drinking water. In particular, the feed or drinking water may contain a combination of 5-100 µg canadine and 10-150 µg berberrubine / kg feed or drinking water.

[0117] Likewise disclosed here is a feed additive which, when dosed as intended, produces one of the animal feeds or drinking waters described here. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] EP 3221461A1

[0036] Cited non-patent literature

[0000] Li W et al., “Total Synthesis of (-)-Canadine, (-)-Rotundine, (-)-Sinactine, and (-)-Xylopinine Using a Last-Step Enantioselective Ir-Catalyzed Hydrogenation,” Journal Organical Chemistry 2021 Jun 18;86(12):8143-8153. doi: 10.1021 / acs.joc.1c00602. Epub 2021 Jun 2. PMID: 34076443

[0032]

Claims

[1] Animal feed, drinking water or animal feed additive containing Canadin and / or a Canadin derivative. [2] Animal feed, drinking water or animal feed additive according to claim 1, - which is animal feed or drinking water with a concentration of at least 0.16 µg of canadin and / or canadin derivative per kg of animal feed or drinking water, in particular with a concentration of at least 1.6 µg of canadin and / or canadin derivative per kg of animal feed or drinking water; or - which is an animal feed additive which, when added as intended to an animal feed or to a drinking water, results in an animal feed or drinking water with a concentration of at least 0.16 µg of canadin and / or canadin derivative per kg of animal feed or drinking water, in particular an animal feed or drinking water with a concentration of at least 1.6 µg of canadin and / or canadin derivative per kg of animal feed or drinking water. [3] Animal feed, drinking water or animal feed additive according to any one of the preceding claims, wherein the animal feed, animal feed additive or drinking water also comprises barber ruby. [4] Animal feed, drinking water or animal feed additive according to claim 3, wherein - which is animal feed or drinking water containing at least 1 µg of berberrubine per kg of animal feed or drinking water, in particular at least 10 µg of berberrubine per kg of animal feed or drinking water; or - which is an animal feed additive which, when added as intended to animal feed or drinking water, results in an animal feed or drinking water containing at least 1 µg of berberrubine per kg of animal feed or drinking water, in particular containing at least 10 µg of berberrubine per kg of animal feed or drinking water. [5] Animal feed or drinking water according to claim 3 or 4, wherein it comprises a combination of at least 1 µg, in particular at least 5 µg of canadine and at least 1 µg, in particular at least 10 µg of berberrubine / kg of feed or drinking water, or animal feed additive according to claim 3 or 4, wherein it results in an animal feed or drinking water with the said amount of canadine and berberrubine when dosed as intended. [6] Animal feed, drinking water or animal feed additive according to any one of the preceding claims, wherein the animal feed, animal feed additive or drinking water contains dried parts of the plant Macleaya cordata. [7] Animal feed, drinking water or animal feed additive according to claim 6, wherein the parts of the plant include leaves and / or roots, flowers, capsules and / or parts of the stem. [8] Animal feed, drinking water or animal feed additive according to any one of claims 6-7, wherein the canadin and / or the canadin derivative and optionally also berberrubine are present as a component of the plant material in the animal feed, drinking water or animal feed additive. [9] Animal feed, drinking water according to one of claims 6-8, wherein the animal feed or drinking water contains at least 10 mg of Macleaya cordata leaves per kg of animal feed or drinking water, in particular at least 100 mg of Macleaya cordata leaves per kg of animal feed or drinking water. [10] Animal feed, drinking water or animal feed additive according to one of the preceding claims, wherein the canadin derivative is an at least singly methylated canadin, in particular N-methyl-canadin. [11] Animal feed, drinking water or animal feed additive according to one of the preceding claims for administration to farm animals, pets or hobby animals, in particular poultry, pigs, cattle, sheep, goats, horses, rabbits. [12] Animal feed, drinking water or animal feed additive according to one of the preceding claims, - where Canadin is synthetic or biotechnologically produced Canadin; and / or - where the canadin derivative is a synthetic or biotechnologically produced canadin derivative; and / or - where the canadin is present as a component of plant material in the animal feed, drinking water or animal feed additive; and / or - wherein the canadin derivative is present as a component of plant material in the animal feed, drinking water or animal feed additive. [13] Animal feed, drinking water or animal feed additive according to one of the preceding claims, wherein the canadin and / or the canadin derivative is present as a physiologically acceptable salt, in particular as chloride or sulfate. [14] Animal feed, drinking water or animal feed additive according to any one of the preceding claims 1-13 for use as a medicament. [15] Animal feed, drinking water or animal feed additive according to one of the preceding claims 1-14 for reducing the fat content in the animal body. [16] Animal feed, drinking water or animal feed additive according to any one of the preceding claims 1-15 for the treatment of obesity. [17] Animal feed, drinking water or animal feed additive according to any one of the preceding claims 1-15 for the treatment of muscular weakness. [18] Animal feed, drinking water or animal feed additive according to any one of the preceding claims 1-15 for the treatment of a pathologically poor general condition due to a high level of oxidative stress in the tissue. [19] Animal feed, drinking water or animal feed additive according to any one of the preceding claims 1-15 for increasing the muscle-to-fat ratio in the meat of animals. [20] Animal feed, drinking water or animal feed additive according to any one of the preceding claims 1-15 for the preventive or acute treatment of oxidative stress in the tissue of animals. [21] Use of an animal feed, drinking water or animal feed additive according to any one of the preceding claims 1-15 for reducing the fat content in the animal body. [22] Use of an animal feed, drinking water or animal feed additive according to any one of the preceding claims 1-15 for medical purposes. [23] Use of an animal feed, drinking water or animal feed additive according to any one of the preceding claims 1-15 for the treatment of obesity. [24] Use of an animal feed, drinking water or animal feed additive according to any one of the preceding claims 1-15 for the treatment of muscular weakness. [25] Use of an animal feed, drinking water or animal feed additive according to any one of the preceding claims 1-15 for the treatment of a poor general condition due to a high level of oxidative stress in the tissue. [26] Use of an animal feed, drinking water or animal feed additive according to any one of the preceding claims 1-15 for the preventive or acute treatment of oxidative stress in the tissue of animals [27] Use of an animal feed, drinking water or animal feed additive according to any one of the preceding claims 1-15 for increasing the muscle-to-fat ratio in the meat of animals. [28] Use of an animal feed additive according to any one of the preceding claims 21-26, wherein the use of the animal feed additive comprises an admixture to an animal feed or to a drinking water in such an amount that an animal feed or drinking water with a concentration of at least 0.16 µg of canadin and / or canadin derivative per kg of animal feed or drinking water, in particular of at least 1.6 µg of canadin and / or canadin derivative per kg of animal feed or drinking water is produced.

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