Feed additive for effectively promoting and improving sexual maturity of poultry

Abstract

The invention discloses a feed additive for effectively promoting and improving sexual maturity of poultry. The feed additive comprises the following components in parts by weight: 15-25 parts of soybean flavone, 15-25 parts of dandelion flavone, 5-18 parts of arginine, 8-15 parts of 25-OH-VD3, 6-12 parts of an angelica sinensis extract, 5-10 parts of vitamin A, 5-10 parts of vitamin E, 4-8 parts of organic zinc, 1-5 parts of organic copper and 1-3 parts of organic selenium. The feed additive is added into breeding poultry feed according to the proportion of 200-400mg / kg, so that the sexual maturity characteristics of breeding poultry can be improved, for example, the semen quality, the serum testosterone content and the crown head redness of male poultry are improved, the development of fallopian tubes and follicles of female poultry is improved, the early laying day age is promoted, and the production performance of poultry is further improved. Most of the raw material components in the feed additive are extracted from natural plants and functional additives, and belong to medicinal and edible components, so that the problem of food safety is avoided, and meanwhile, the diversified requirements of the market can be met.

Description

Technical Field

[0001] The invention belongs to the technical field of feed additives, and specifically discloses a feed additive that effectively promotes and improves the sexual maturity of poultry. Background Art

[0002] Poultry is an important source of protein, providing people with meat and eggs to meet their daily nutritional needs. The growth rate of meat poultry can effectively meet people's daily demand for meat. Sexual maturity marks the completion of the development of the reproductive system of poultry, enabling them to carry out normal reproductive activities. For laying hens, the early or late sexual maturity directly affects their egg-laying performance, including egg production and eggshell quality; for breeding poultry, the time and quality of sexual maturity are directly related to their reproductive efficiency, which in turn affects the quality and quantity of offspring; for high-quality broilers, reaching sexual maturity in time can effectively control breeding costs. Reaching sexual maturity too early or too late will increase costs. For example, premature maturity may lead to feed waste, while late maturity will extend the breeding cycle. In addition, the different degrees of sexual maturity of poultry lead to different characteristics such as meat quality and taste, thus providing the market with a variety of product choices. Adjusting sexual maturity management strategies according to market demand can better meet consumer preferences, such as the demand for poultry products of specific breeds or specific stages.

[0003] Traditional poultry feeding and management lack scientificity and often fail to meet the physiological needs of poultry in the early stage of sexual maturity, thus affecting gonadal development and hormone secretion, leading to delayed sexual maturity. Specifically, unreasonable environmental factors such as lighting and ventilation will interfere with the physiological rhythm of laying poultry, thereby affecting the normal development of gonads. In addition, if the feed formula is not finely adjusted according to the different growth stages and sexual maturity needs of poultry, it will also have an adverse effect on gonadal development. For example, if the nutrient density in the feed is too high or too low, it may lead to early or delayed sexual maturity, which not only affects the growth cycle of poultry, but also may cause sexual characteristics to appear too early or not obvious, thereby affecting reproductive performance, causing feed waste and increasing breeding costs. Modern poultry feed research shows that adding an appropriate amount of trace elements or plant ingredients can alleviate these problems, ensure normal hormone secretion and gonadal development, and thus improve the reproductive performance of laying poultry. Therefore, it is the key to promote normal sexual maturity and improve reproductive performance to reasonably adjust the feed formula, use appropriate additives, and ensure that poultry obtains balanced nutrition at each growth stage.

[0004] In general, the sexual maturity of poultry is a complex but crucial process, which not only affects the physiological and reproductive performance of poultry itself, but also directly relates to production efficiency, economic benefits and market consumption choices. Therefore, scientific management and regulation of the sexual maturity process is of great significance to improving the overall competitiveness of the poultry industry.

[0005] Therefore, there is an urgent need to develop green and efficient feed additives that promote and improve the sexual maturity of poultry. These feed additives can not only promote the development of gonads, induce the synthesis and secretion of sex hormones in the body, and make the comb red and shiny, but also improve physiological functions, enhance disease resistance, and have a certain improvement effect on growth performance and intestinal health. Summary of the invention

[0006] Based on the above analysis, the present invention provides a feed additive and application that effectively promotes and improves the sexual maturity of poultry. The present invention is achieved by the following technical means:

[0007] The present invention first discloses a feed additive for effectively promoting and improving the sexual maturity of poultry, comprising:

[0008] 15-25 parts of soybean flavonoids, 15-25 parts of dandelion flavonoids, 5-18 parts of arginine, 38-15 parts of 25-OH-VD, 6-12 parts of angelica extract, 5-10 parts of vitamin A, 5-10 parts of vitamin E, 4-8 parts of organic zinc, 1-5 parts of organic copper, and 1-3 parts of organic selenium.

[0009] Furthermore, the feed additive comprises:

[0010] The present invention comprises 21 parts of soybean flavonoids, 20 parts of dandelion flavonoids, 11 parts of arginine, 12 parts of 25-OH-VD3, 10 parts of angelica extract, 7.5 parts of vitamin A, 7.5 parts of vitamin E, 6 parts of organic zinc, 3 parts of organic copper and 2 parts of organic selenium.

[0011] The present invention also discloses a method for using the feed additive, comprising:

[0012] Add the feed additive to complete poultry feed at a ratio of 200-400 mg / kg.

[0013] The beneficial effects of the present invention are:

[0014] Most of the raw material components in the feed additive of the present invention are extracted from natural plants and functional additives, which are medicinal and edible ingredients, and will not cause food safety problems. When used in combination with complete feed, the feed additive can improve the sexual maturity characteristics of poultry such as semen quality, crown redness, serum testosterone content, oviduct development and laying age, and further improve the production performance of poultry. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 To study the effects of the supplementation groups on the age at first laying and the rate of laying in high-quality chickens. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] The word "embodiment" used here as an "exemplary" does not necessarily mean that any embodiment described is superior to or better than other embodiments. Unless otherwise specified, the performance index tests in the embodiments of this method adopt conventional test methods in the art. The terms described in the present invention are only for describing specific implementation methods and are not intended to limit the content disclosed in the present invention.

[0018] Unless otherwise specified, the technical and scientific terms used herein have the same meanings as commonly understood by ordinary technicians in the technical field to which the invention belongs; other raw materials, reagents, experimental methods and technical means not specifically specified in the present invention refer to the raw materials and reagents commonly used by ordinary technicians in the field, as well as the commonly used experimental methods and technical means.

[0019] Example 1

[0020] A feed additive for promoting and improving the sexual maturity of male Muscovy ducks for breeding, comprising:

[0021] 21 parts of soybean flavonoids, 20 parts of dandelion flavonoids, 11 parts of arginine, 12 parts of 25-OH-VD3, 10 parts of angelica extract, 7.5 parts of vitamin A, 7.5 parts of vitamin E, 6 parts of organic zinc, 3 parts of organic copper, and 2 parts of organic selenium.

[0022] Example 2

[0023] A feed additive for promoting and improving sexual maturity of broiler breeders, comprising:

[0024] 15 parts of soybean flavonoids, 25 parts of dandelion flavonoids, 12 parts of arginine, 10 parts of 25-OH-VD3, 12 parts of angelica extract, 7.5 parts of vitamin A, 7.5 parts of vitamin E, 6 parts of organic zinc, 3 parts of organic copper, and 2 parts of organic selenium.

[0025] Example 3

[0026] A feed additive for promoting and improving sexual maturity of high-quality chickens, comprising:

[0027] 25 parts of soybean flavonoids, 14 parts of dandelion flavonoids, 11 parts of arginine, 12 parts of 25-OH-VD3, 12 parts of angelica extract, 7.5 parts of vitamin A, 7.5 parts of vitamin E, 6 parts of organic zinc, 3 parts of organic copper, and 2 parts of organic selenium.

[0028] Test Example 1

[0029] Effects of supplementation of sexual maturity-promoting additives on the color of roe tumor and semen quality of male Muscovy ducks for breeding

[0030] The experiment adopted a single-factor completely randomized design, and selected 150 healthy and well-developed 10-week-old male Muscovy ducks. They were randomly divided into a control group and an additive group according to the principle of consistent weight, with 6 replicates in each group and 5 ducks in each replicate. The specific experiments and groupings are shown in Table 1:

[0031] Table 1 Experimental design and grouping

[0032]

[0033] Feeding and management:

[0034] The experiment used a corn-soybean meal type basic feed that is representative of the industry. According to the Chinese Feed Composition Table (30th Edition) and the "Duck Feeding Standard 2004", the feed required for the peak egg-laying period and the late breeding Muscovy ducks was scientifically formulated. The 10th week of age was the pre-feeding period, and the formal experiment lasted from the 11th week to the 25th week of age. The daily feed amount of Muscovy ducks refers to the latest feeding and management manual for laying ducks. Natural light and natural ventilation are used every day to keep the pens clean and hygienic. The experimental ducks were caged in the experimental site (1 per cage). A special person was assigned to be responsible for feeding, and the color changes and height of the tumor of each group of Muscovy ducks were recorded by artificial colorimetry. During the training for semen collection at 25 weeks of age, semen was collected to test the semen quality.

[0035] Data Analysis:

[0036] The T test was used to analyze the significant differences in the SAS system.

[0037] Test methods and index determination:

[0038] Tumor development: Starting from 15 weeks of age, in order to ensure that the color difference at different time periods is caused by light exposure every day, the color of each duck's face was compared with a color card at the same time of the day, and the number of ducks in each treatment group was recorded in four color gradients of yellow, light red, red, and dark red. At the same time, a digital vernier caliper was used to measure the height of the tumor at the initial 11 weeks of age and the final 25 weeks of age.

[0039] Semen quality: At 25 weeks of age, the semen of two Muscovy ducks in each replicate was collected by electrical stimulation, placed in an incubator, and tested within 20 minutes. The test indicators are as follows:

[0040] (1) Semen volume: Collect semen and measure the semen volume using a 1-100 μL pipette.

[0041] (2) Sperm density: Sperm count was performed using a hemacytometer to calculate the number of sperm per milliliter of semen. Each sample was counted three times, and each count was repeated three times.

[0042] (3) Sperm motility: The sperm motility was processed in the same way as the sperm density. The sperm were observed under an optical microscope at a magnification of 400 times and the number of sperm moving in a straight line in the semen sample was counted. Each sample was counted three times and each count was repeated three times.

[0043] (4) Sperm motility: Sperm motility was counted using the trypan blue dye method and the counting was repeated three times. Living cells were not stained, while dead cells were stained blue.

[0044] (5) Sperm deformity rate: The deformity rate was calculated using the eosin staining method and repeated three times.

[0045] Testosterone content: Blood was collected from each wing vein at 18 weeks and 25 weeks of age. After the serum was separated, the serum testosterone concentration was determined using the Shanghai ELISA Biotechnology Company Testosterone Detection Kit (enzyme-linked immunosorbent assay).

[0046] Results Analysis

[0047] As can be seen from Table 2, compared with the control group, the supplementation group had no significant effect on the change in color depth and height of the tumor of Muscovy duck (P>0.05), but had a certain effect on the final tumor height (P=0.08).

[0048] Table 2 Effects of the supplementation groups on the development of tumors in breeding white-feathered male Muscovy ducks

[0049]

[0050] As shown in Table 3, compared with the control group, the sperm motility level in the supplemented group was significantly increased (P<0.05), and the sperm deformity rate level was significantly reduced (P<0.05). There was no significant effect on semen volume, sperm motility and sperm density (P>0.05).

[0051] Table 3 Effects of additive groups on semen quality of breeding white-feathered male Muscovy ducks

[0052]

[0053] As can be seen from Table 4, compared with the control group, the supplementation group had no significant effect on the testosterone content of male Muscovy ducks (P>0.05).

[0054] Table 4 Effects of the supplementation groups on testosterone content in breeding white-feathered male Muscovy ducks

[0055]

[0056] Test Example 2

[0057] Effects of supplementation with sexual maturity-promoting additives on the development of combs and ovaries in broiler breeders

[0058] The experiment adopted a single-factor completely randomized design, and selected 360 healthy and well-developed 12-week-old egg-laying bearded chickens. They were randomly divided into a control group and an additive group according to the principle of consistent weight, with 6 replicates in each group and 15 chickens in each replicate. The specific experiments and groupings are shown in Table 5:

[0059] Table 5 Experimental design and grouping

[0060]

[0061] Feeding and management

[0062] The experiment used a corn-soybean meal-type basic feed that is representative of the industry, and scientifically formulated the feed required for broiler breeders during the peak and late egg-laying periods according to the China Feed Composition Table (30th edition) and the "Nutrient Requirements for Yellow-Feathered Broilers" standard (NY / T3645-2020).

[0063] The 12th week of age is the pre-feeding period, and the formal test lasts from the 13th week of age to the 20th week of age when the chickens start to lay eggs. The daily feed amount for the breeder chickens refers to the latest breeding and management manual for breeder chickens. The light is constant for 16 hours a day, natural ventilation is provided, and a dedicated person is assigned to feed the chickens and keep the pens clean and sanitary. The experimental chickens are caged in the experimental site (one cage per chicken).

[0064] Data analysis

[0065] The T test was used to analyze the significant differences in the SAS system.

[0066] Test methods and index determination

[0067] Comb redness and comb size: Starting from 13 weeks of age, the comb color of each laying hen was compared with a colorimetric card at the same time every day of the week, and the number of laying hens in each treatment group was recorded according to the four color gradients of light red, red, and dark red. The comb height (the distance from the top of the crown tooth to the root) and comb length of 13-week and 20-week-old chickens were measured using a digital vernier caliper.

[0068] Organ Index: General calculation formula for organ index:

[0069]

[0070] (1) Ovarian index: The size of the ovarian index is an important indicator of the strength of the ovarian physiological function. At 20 weeks of age, one chicken was randomly selected from each replicate, fasted for 12 hours before slaughter, weighed, and bled to death by the neck. The reproductive organs were removed and the ovaries were separated and weighed.

[0071] (2) Oviduct index: The oviduct index reflects the physiological status of laying hens, especially their egg-laying ability and reproductive health. After the reproductive organs are removed, the length and weight of the oviduct are separated and measured.

[0072] (3) Dominant follicle index and small yolk follicle index: These are important indicators for evaluating the reproductive health and egg-laying capacity of laying hens. They can reflect the development of follicles and are related to the quality and developmental capacity of eggs. The number of dominant follicles (diameter > 8 mm) and small yolk follicles (diameter 3-8 mm) was separated and recorded, and the dominant follicles and small yolk follicles were weighed respectively.

[0073] Results Analysis

[0074] As shown in Table 6, the additive group had a significant effect on the comb height of bearded laying hens in the early egg-laying period (P<0.05); it had a significant effect on the promotion of deep red comb (P<0.05); and had no significant effect on light red, red and comb length (P>0.05). This indicates that the additive has a certain effect on the ovarian development and comb development of bearded breeders in the early egg-laying period.

[0075] Table 6 Effects of the supplementation groups on comb development of broiler breeders

[0076]

[0077]

[0078] It can be seen from Table 7 that compared with the control group, the additive group had a significant effect on the ovarian index, oviduct length and dominant follicle weight of bearded breeder hens in the early egg-laying period (P<0.05); compared with the control group, the additive group had no significant effect on body weight, oviduct index and small yellow follicles (P>0.05), indicating that the additive has a certain effect on the ovarian development of bearded breeder hens in the early egg-laying period.

[0079] Table 7 Effects of the supplementation groups on ovarian development of broiler breeders

[0080]

[0081] Test Example 3

[0082] Effects of supplementation of sexual maturity-promoting additives on the laying age and meat quality of high-quality chickens

[0083] The experiment adopted a single-factor completely randomized design, and selected 360 healthy and well-developed 12-week-old high-quality bearded chickens. They were randomly divided into two treatments, a control group and an added group, according to the principle of consistent weight, with 6 replicates in each group and 15 chickens in each replicate. The specific experimental method was the same as that of Experimental Example 2.

[0084] Data analysis

[0085] The T test was used to analyze the significant differences in the SAS system.

[0086] Test methods and index determination

[0087] Age of first laying: From the beginning of the formal experiment, observe the egg-laying situation every day, record the date of the first egg laid by each chicken and the corresponding age and number. Starting from the first week of laying, record the laying rate calculation formula every week:

[0088]

[0089] Meat quality: (1) Meat color: Breast and leg muscle samples were wiped dry with neutral filter paper 45 minutes after slaughter, and the meat color of the skin-attached muscle was measured using an automatic colorimeter (L represents brightness, a represents redness, and b represents yellowness).

[0090] (2) pH value: At 45 min and 24 h after slaughter, respectively, the electrode of a portable pH meter was directly inserted into the 1 cm deep hole of the breast muscle and leg muscle samples. Three points were selected for each sample for measurement, and the average value was taken.

[0091] (3) Shear force: Cut the meat into strips of 0.5×0.5×0.5 cm3 in length, width and thickness along the direction of the muscle fibers, and measure the muscle shear force with a tenderizer. Repeat the test three times for each meat sample and take the average value. The magnitude is expressed as shear force (unit: N).

[0092] Results Analysis

[0093] From Table 8 and Figure 1 It can be seen that compared with the control group, the additive group had a significant effect on accelerating the start of production of high-quality chickens (P<0.05); compared with the control group, the additive group had a certain increase in the start of production rate of 119 days, 126 days, 133 days and 140 days. This shows that the additive has a significant effect on improving the start of production rate of high-quality breeder chickens and accelerating the start of production in advance.

[0094] Table 8 Effect of the supplementation group on the age of high-quality chickens in terms of laying age

[0095]

[0096] As can be seen from Table 9, compared with the control group, the addition group had a significant effect on the shear force of high-quality chicken breast muscle (P<0.05), and had no significant effect on the chromaticity, pH and shear force of breast muscle and leg muscle (P>0.05). This shows that the addition group can increase the tenderness of chicken to a certain extent.

[0097] Table 9 Effects of the additive groups on the quality of high-quality chicken breast muscle

[0098]

[0099]

[0100] In summary, the experiment verified that supplementing with additives that promote sexual maturity can improve the quality of semen of breeding male poultry, the development of ovaries and certain combs of female poultry to a certain extent, and accelerate sexual maturity, thereby reducing breeding costs, and providing an experimental basis for the use of plant-based additives to promote poultry development and improve production efficiency.

[0101] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A feed additive for effectively promoting and improving the sexual maturity of poultry, comprising: 15-25 parts of soybean flavonoids, 15-25 parts of dandelion flavonoids, 5-18 parts of arginine, 38-15 parts of 25-OH-VD, 6-12 parts of angelica extract, 5-10 parts of vitamin A, 5-10 parts of vitamin E, 4-8 parts of organic zinc, 1-5 parts of organic copper, and 1-3 parts of organic selenium.

2. The feed additive according to claim 1, wherein: The present invention comprises 21 parts of soybean flavonoids, 20 parts of dandelion flavonoids, 11 parts of arginine, 12 parts of 25-OH-VD3, 10 parts of angelica extract, 7.5 parts of vitamin A, 7.5 parts of vitamin E, 6 parts of organic zinc, 3 parts of organic copper and 2 parts of organic selenium.

3. A method for using the feed additive according to claim 1 or 2, comprising: Add the feed additive to complete poultry feed at a ratio of 200-400 mg / kg.

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