Poultry feed for meat production, breeding method for broiler chickens, and chicken meat

Abstract

To provide a poultry feed for meat production that effectively improves the meat quality of chicken, particularly its juiciness, and a breeding method for broiler chickens, and chicken meat with improved meat quality.SOLUTION: The present invention provides: a poultry feed for meat production that contains 3-5 mass% of rosehip and / or processed products thereof in the total solid content of the feed; a breeding method for broiler chickens that includes giving the feed to broiler chickens for breeding; and chicken meat derived from broiler chickens bred by the method.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a chicken feed for meat production aimed at improving the quality of chicken meat obtained from meat chickens, a method for raising meat chickens, and chicken meat. [Background technology]

[0002] In meat farms, chickens are raised in large numbers in enclosures. Since the meat of the chickens must be shipped within a certain number of days, they are fed the required amount of feed at set times and nutritionally controlled. In recent years, the number of days until shipping has been shortened, so the requirements for meat-producing chicken feed and its additives have become more complex and sophisticated. In these recent times, a technology has been proposed for chicken feed and its additives to obtain high-quality chicken meat (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-13091 A Summary of the Invention [Problem to be solved by the invention]

[0004] According to the technology of Patent Document 1, good quality chicken meat can be obtained, but there are problems with meat quality such as juiciness.

[0005] On the other hand, rose hips, which are fruits that grow at the base of the flowers of plants of the Rosaceae family, are said to have the highest vitamin C content of any plant, and are known to have cold prevention, anti-aging, and skin-beautifying effects in humans. They are also known to contain large amounts of beta-carotene, an antioxidant, iron involved in oxygen transport in body fluids, and flavonoids. Furthermore, they contain calcium, which plays an important role in bone formation, in a form that is easily absorbed by the human body, and are expected to be effective in preventing the occurrence of skeletal abnormalities. However, there was no idea of ​​using such rose hips for meat chicken farming.

[0006] The present invention has been made in consideration of the above-mentioned points, and an object of the present invention is to provide a meat chicken feed that is effective for improving chicken meat quality (particularly juiciness), a method for raising meat chickens, and chicken meat with improved meat quality. [Means for solving the problem]

[0007] As a result of extensive investigations conducted in order to achieve the above-mentioned object, the inventors unexpectedly discovered that rose hips, the fruit that grows at the base of the flower of a plant of the genus Rosaceae in the Rosaceae family, are effective in improving the quality (particularly juiciness) of edible chicken meat, and thus completed the present invention. That is, the present invention provides the following inventions.

[0008] (1) Poultry feed containing rose hips and / or rose hips processed products. (2) The meat poultry feed according to (1) above, which contains 3 to 5 mass% of rose hips and / or processed products thereof in the total solid content of the feed. (3) A method for raising meat chickens, which comprises feeding the feed according to (1) or (2) above to meat chickens. (4) The method according to (3) above, wherein the feed according to (1) or (2) above is fed to the broilers for 25 days or more before the broilers are shipped. (5) Chicken meat obtained from meat chickens raised by the method described in (3) or (4) above.

[0009] According to the present invention, the meat quality of the meat obtained from the meat chickens can be improved by feeding the chickens the above-mentioned meat-producing poultry feed, allowing them to ingest the rose hips, which are the active ingredient, and have them act in their bodies. Effect of the Invention

[0010] According to the present invention, it is possible to provide meat-producing chicken feed that is effective for improving chicken meat quality, a method for raising meat chickens, and chicken meat with improved meat quality. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the meat-producing poultry feed, meat chicken breeding method, and chicken meat according to one embodiment of the present invention will be described in detail. However, the technical scope of the present invention is not limited to only the items in this section, and the present invention may take various forms as long as it achieves its object.

[0012] Unless otherwise specified, each term in this specification is used in the sense commonly used by those skilled in the art and should not be interpreted as having an unduly restrictive meaning. In addition, the theories and speculations made in this specification are based on the inventor's knowledge and experience, and therefore the technical scope of the present invention is not limited solely by such theories and speculations.

[0013] As used herein, the term "and / or" means any one, any combination of two or more of the associated listed items, or all combinations. In this specification, the term "content" is synonymous with concentration and refers to the ratio of the amount of a component to the total amount of solids in the feed. However, the total amount of the component content does not exceed 100%. In this specification, unless otherwise specified, the unit of content means "mass% (wt%)". In this specification, the term "to" in a numerical range means a range that includes the numerical values ​​before and after it. For example, "0% by mass to 100% by mass" means a range that is equal to or greater than 0% by mass and equal to or less than 100% by mass.

[0014] [Meat-producing poultry feed] A meat poultry feed according to one embodiment of the present invention (hereinafter sometimes referred to as the "feed of the present invention") is a poultry feed containing rose hips and / or a processed product thereof. The present inventors have found that adding rose hips and / or a processed product thereof to the feed of the present invention is effective in improving (enhancing) the meat quality (particularly juiciness and elasticity) of chicken meat obtained from meat chickens after breeding. In addition to improving the meat quality, the inventors have also found that it is effective in improving the overall quality of chicken meat, such as improving the flavor (particularly umami) and reducing unpleasant odors.

[0015] The rose hips used in the feed of the present invention are fruits that grow at the base of the flowers of plants of the genus Rosaceae. Rose hips have a pleasant fragrance and contain a variety of ingredients, including vitamin C, which is 10 to 20 times that of lemons, as well as vitamins A, B1, B2, D, E, P, lycopene, calcium, iron, manganese, etc. There are more than 200 species of the genus Rosaceae, including Rosa canina, Rosa naniwai, Rosa multiflora, and Rosa sansho, and any of these may be used in the present invention. Rosa canina is particularly preferred.

[0016] In the feed of the present invention, the above-mentioned rose hips are preferably cut or crushed to an appropriate size (for example, an average particle size of about 1 mm to 3 mm), or dried products thereof. In addition, an extract extracted by a known method such as steam distillation or solvent extraction using the above-mentioned rose hips as a raw material, or a dried product thereof, can also be used. All of these are included in the processed products of rose hips.

[0017] Furthermore, from the viewpoint of expecting additive or synergistic effects with other herbs, herbs other than rosehips, such as peppermint, spearmint, lemongrass, orange peel, cinnamon, ginger, saffron, echinacea, pomegranate, sage, eyebright, sweet fennel, thyme, mate, eucalyptus, raspberry leaf, rooibos, rosemary, lavender, plantain, oregano, cardamom, clove, star anise, linden, agrimony, wild cherry, raspberry, and anise seed, may be used in combination with rosehips. Herbs other than rosehips may include leaves, stems, bark, roots, fruits, seeds, etc., and may be used either raw or dried, cut into appropriate sizes, or crushed.

[0018] The feed of the present invention is characterized by containing the above-mentioned rose hips and / or its processed products, and the basic feed ingredients can be publicly known or commercially available. Generally, a compound feed containing grain as the main ingredient and various auxiliary ingredients is used as the basal feed. A basal feed containing grain as the main ingredient means that the basal feed contains grains at 80% by mass or more when the total mass of the basal feed is taken as 100%. As the grains, one or more of any selected grains such as corn, milo, wheat, barley, oats, rye, brown rice, buckwheat, millet, millet, and barnyard millet can be used. From the viewpoint of growth efficiency, i.e., promoting growth in a shorter period of time, it is preferable to use corn among the grains.

[0019] From the viewpoint of achieving both growth efficiency and meat quality improvement, the content of rose hips in the feed of the present invention is preferably 3% by mass to 5% by mass in the total solid content of the feed, and particularly 3.5% by mass to 4.5% by mass is preferable because it is possible to achieve both to a higher degree. For example, 4% by mass of rose hips in the total solid content of the feed means that 4% by mass of rose hips is contained when the sum of the mass of the basal feed and the mass of the rose hips is 100%. If the content of rose hips is less than 3% by mass, the growth efficiency is improved, but the improvement in meat quality may be difficult to sense sensorily. If the content of rose hips is more than 5% by mass, the improvement in meat quality is easily sensed, but the growth efficiency may decrease due to the reduction in calories of the entire feed of the present invention. However, even at these contents, a desirable meat-producing poultry feed can be obtained by appropriately selecting the basal feed.

[0020] [How to raise meat chickens] A method for raising meat chickens according to one embodiment of the present invention is a chicken farming method in which meat chickens are raised by feeding them the feed of the present invention. The chickens to be fed with the feed of the present invention are not particularly limited in breed, as long as they are meat chickens, i.e. chickens raised for the purpose of producing chicken meat. For example, the chickens are of a type suitable for finishing raising and slaughtering at about 60 days after birth (60 days of age) or less, and specifically meat chickens (broilers) are preferred.

[0021] There are no particular limitations on the method of raising chickens. For example, cage rearing, in which each chicken is individually reared, free-range rearing, in which multiple chickens are gathered and reared on a designated flat area, or a combination of these may be used. There is no particular limitation on the feeding period for chickens. From the viewpoint of improving meat quality, the feeding period is, for example, 25 days or more (i.e., from 25 days before shipping (slaughter) to shipping), preferably 40 days or more.

[0022] There is no particular limit to the method of feeding chickens. For example, a fixed-quantity feeding method in which a fixed amount of the feed of the present invention is fed to chickens every day, or a continuous feeding method in which the feed of the present invention can be fed to chickens at all times can be adopted. The fixed-quantity feeding method is suitable for cage rearing, for example, and the continuous feeding method is suitable for floor rearing, for example. There is no particular limit to the number of chickens relative to the rearing area, but for example, 1 m 2 It is preferable to have 1 to 3 birds per unit. There is no particular limitation on the age of chicks when starting to feed the feed of the present invention, for example, it is preferably within the range of 7 to 15 days of age.

[0023] 〔chicken meat〕 The chicken meat according to one embodiment of the present invention is used as a raw material for producing foods such as fried chicken, roast chicken, teriyaki chicken, chicken thigh nanban, chicken thigh steak, chicken breast cutlet, grilled chicken breast with yuzu pepper, bang bang chicken with chicken tenderloin, fried chicken tenderloin, simmered chicken wings, and fried chicken wings. EXAMPLES

[0024] The present invention will be described in more detail below with reference to examples. However, the present invention is not limited to these examples, and the present invention can take various forms as long as the object of the present invention can be achieved.

[0025] [Examples 1 to 5, Comparative Example 1] The effect of feeding a feed containing rosehip on improving the meat quality of chicken meat obtained from bred chickens was investigated. As test feeds for this purpose, rosehip powder (fine cut) with an average particle size of 1 mm was added to basic feed A (manufactured by Shimizuko Feed Co., Ltd., product name "Hybro Starter") mainly made of corn at 2 mass%, 3 mass%, 4 mass%, 5 mass%, and 6 mass% by weight, and these were named feed R2 (Example 1), feed R3 (Example 2), feed R4 (Example 3), feed R5 (Example 4), and feed R6 (Example 5). In addition, the above-mentioned basic feed A without the rosehip powder was used as a control feed (Comparative Example 1). The composition of each feed is shown in Table 1.

[0026] [Table 1]

[0027] The above feed was divided and used for each test area (Example 1 in test area 1, Example 2 in test area 2, Example 3 in test area 3, Example 4 in test area 4, Example 5 in test area 5, and Comparative Example 1 in the control area), and 20 female meat chickens (broiler chickens) were reared in windowless chicken coops per test area. The rearing density was 1 bird / 1m. 2 The chicks were allowed to eat freely and were given 3 kg of feed every day at 9:00 a.m. in each test group. Feed was started for chicks in each test group when they were 10 days old, and continued for 40 days until they reached 50 days of age. After that, the chicks were butchered for the test.

[0028] A sensory evaluation test was conducted as a quality test for the chicken meat. For the sensory evaluation test, chilled chicken breast meat (shallow pectoral muscle) that had been frozen and stored at -30℃ for 60 days after the above-mentioned test butchering was placed in a non-breathable plastic bag, vacuum-packed, heated in a water bath at 75℃ for 30 minutes, then removed from the bag, wiped off the drips, and cut into 1cm widths to serve as samples. The sensory evaluation test was carried out by 10 trained examiners (5 men and 5 women). The evaluation items for the samples were "tenderness," "juiciness," and "elasticity" for meat quality, "sweetness" and "umami" for flavor, and "degree of unpleasant odor" for odor. The subjects were asked to evaluate these six items on a 6-point scale (very bad: -3, bad: -2, slightly bad: -1, slightly good: +1, good: +2, very good: +3), with the control group given a score of 0. The evaluation criteria for each evaluation item were as follows (1) to (6).

[0029] [Evaluation Criteria] (1) Softness: Hard to soft (the softer the score, the higher the score) (2) Juiciness: Dry to juicy (the more juicy the food, the higher the score) (3) Elasticity: Weak to strong (the stronger the elasticity, the higher the score) (4) Sweetness: Weak to strong (the sweeter the taste, the higher the score) (5) Umami: Weak to strong (the stronger the umami, the higher the score) (6) Degree of unpleasant odor: strong to weak (the weaker the unpleasant odor, the higher the score)

[0030] The results of the evaluation are shown in Table 2. The evaluation score for each test group is the average score given by all the sensory examiners.

[0031] [Table 2]

[0032] The evaluation scores of test plots 1 to 5 were slightly inferior to the control plot in two items (tenderness and sweetness) (slightly hard, slightly sour), but were superior to the control plot in four items (juiciness, elasticity, umami, and level of unpleasant odor). In Examples 1 to 5 of the present invention, improvements in meat quality in terms of juiciness and elasticity, improvements in flavor in terms of umami, and improvements in the level of unpleasant odor (weak chicken odor and weak unpleasant odor) were observed. Among them, the evaluation scores of test plots 2 to 4 were high in the above four items, which were superior to the control plot, and it was confirmed that the meat quality and flavor were significantly improved in Examples 2 to 4 of the present invention.

[0033] [Examples 6 to 10] Except for the fact that the feeding period was 30 days (continuous rearing until the age of 40 days), the same procedures and evaluations were carried out as in Examples 1 to 5. As a result, the same results as in Examples 1 to 5 were obtained.

[0034] [Example 11] Instead of the basal feed A, a high-calorie basal feed B containing a higher corn content was prepared, and this basal feed B was supplemented with 2% rosehip powder by mass. Except for this, the same procedure was followed as in Example 1 (feed R2 containing 2% rosehip powder by mass relative to basal feed A was used) and the same evaluation was performed. As a result, the same results were obtained as in Example 2 (feed R3 containing 3% rosehip powder by mass relative to basal feed A was used). In other words, it was confirmed that even if the amount of rosehip powder added was small, the same effect could be achieved by appropriately adjusting the ingredients of the basal feed.

[0035] From the above results, it became clear that the administration of rose hips can improve the quality of chicken meat obtained from meat chickens.

Claims

1. A poultry feed for meat production containing rose hips and / or processed products thereof.

2. The meat poultry feed according to claim 1, wherein the total solid content of the feed contains 3% by mass to 5% by mass of rose hips and / or processed products thereof.

3. A method for raising meat chickens, comprising feeding the feed according to claim 1 or 2 to meat chickens.

4. 4. The method according to claim 3, wherein the feed of claim 1 or 2 is fed to the meat chickens for at least 25 days before shipping of the meat chickens.

5. Chicken meat obtained from meat chickens raised by the method according to claim 3 or 4.

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