A feed additive, feed, application and feeding method for yellow - feather broilers

Abstract

The present invention discloses a feed additive for yellow - feather broilers, a feed, an application and a feeding method, which relate to the technical field of poultry breeding. Among them, the feed additive for yellow - feather broilers contains a traditional Chinese medicine powder composition, and the traditional Chinese medicine powder composition is composed of the following raw materials in parts by weight: 5 - 10 parts of Rehmannia glutinosa, 10 - 15 parts of Fructus Aurantii, 20 - 25 parts of Chrysanthemum morifolium, and 20 - 25 parts of Asparagus cochinchinensis. In the traditional Chinese medicine powder composition, the weight ratio of Asparagus cochinchinensis to Rehmannia glutinosa is 2 - 4.5:1, and the weight ratio of Chrysanthemum morifolium to Fructus Aurantii is 1.4 - 2.0:1. The particle size of the traditional Chinese medicine powder composition is 80 mesh. The feed additive for yellow - feather broilers provided by the present invention can not only improve the growth rate and feed conversion efficiency of yellow - feather broilers, but also increase the density of skin hair follicles of yellow - feather broilers and reduce the difference in hair follicle density among individual chickens, meeting the appearance selection requirements of consumers for chilled yellow - feather broilers.

Description

Technical Field

[0001] The present invention relates to the technical field of poultry breeding, in particular to a feed additive for yellow - feather broilers, feed, application and feeding method. Background Art

[0002] At present, with the improvement of food safety awareness, more and more cities have prohibited the trading of live poultry and the sale of slaughtered poultry at stalls; the market demand for chilled yellow - feather broilers after slaughter is increasing. In the past, Chinese residents mainly selected yellow - feather broilers by looking at the health of live chickens, feather color, shank color and other appearance indicators. However, the change in the form of broiler products has also led to a change in the selection criteria of consumers. Now, consumers mainly purchase by observing the traits of the skin hair follicles, combs, etc. of chilled chickens. Consumers tend to select yellow - feather broilers with a high density of skin hair follicles, so the sales volume of yellow - feather broilers with a high hair follicle density is relatively large and they are highly welcomed in the market.

[0003] For those skilled in the art, they all hope to quickly improve the density of skin hair follicles of yellow - feather broilers and reduce the difference in hair follicle density among individual chickens by improving the feed, so as to meet the appearance selection requirements of consumers for chilled yellow - feather broilers. Summary of the Invention

[0004] The present invention provides a feed additive for yellow - feather broilers, feed, application and feeding method. When the feed additive of the present invention is applied to the feed for yellow - feather broilers, it can not only improve the growth rate and feed conversion efficiency of yellow - feather broilers, but also improve the density of skin hair follicles of yellow - feather broilers and reduce the difference in hair follicle density among individual chickens, meeting the appearance selection requirements of consumers for chilled yellow - feather broilers.

[0005] The technical solution of the present invention is as follows:

[0006] In the first aspect, the present invention provides a feed additive for yellow - feather broilers. The feed additive for yellow - feather broilers contains a traditional Chinese medicine powder composition, and the traditional Chinese medicine powder composition is composed of the following raw materials in parts by weight: 5 - 10 parts of Rehmannia glutinosa, 10 - 15 parts of Aurantii Fructus Immaturus, 20 - 25 parts of Chrysanthemi Flos, and 20 - 25 parts of Asparagi Radix;

[0007] In the traditional Chinese medicine powder composition, the weight ratio of Asparagi Radix to Rehmannia glutinosa is 2 - 4.5:1, and the weight ratio of Chrysanthemi Flos to Aurantii Fructus Immaturus is 1.4 - 2.0:1;

[0008] The particle size of the traditional Chinese medicine powder composition is 80 mesh.

[0009] Further, the traditional Chinese medicine powder composition is composed of the following raw materials in parts by weight: 5 parts of Rehmannia glutinosa, 10 parts of Aurantii Fructus Immaturus, 20 parts of Chrysanthemi Flos, and 20 parts of Asparagi Radix.

[0010] Further, the traditional Chinese medicine powder composition is composed of the following raw materials in parts by weight: 7 parts of Rehmannia glutinosa, 13 parts of Fructus Aurantii, 23 parts of Chrysanthemum morifolium, and 21 parts of Asparagus cochinchinensis.

[0011] Further, the traditional Chinese medicine powder composition is composed of the following raw materials in parts by weight: 10 parts of Rehmannia glutinosa, 15 parts of Fructus Aurantii, 25 parts of Chrysanthemum morifolium, and 25 parts of Asparagus cochinchinensis.

[0012] Further, the feed additive for yellow - feather broilers is in granular form.

[0013] In a second aspect, the present invention also provides a feed for yellow - feather broilers, which includes the above - mentioned feed additive for yellow - feather broilers and a complete formula feed. The weight ratio of the traditional Chinese medicine powder composition to the complete formula feed is 5 - 10:1000.

[0014] In a third aspect, the present invention provides an application of a feed for yellow - feather broilers, which is to apply the above - mentioned feed additive for yellow - feather broilers to the feeding of yellow - feather broilers.

[0015] In a fourth aspect, the present invention provides a method for raising yellow - feather broilers, which is to raise yellow - feather broilers aged 6 - 17 weeks with the above - mentioned feed for yellow - feather broilers.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The feed additive for yellow - feather broilers of the present invention adopts a traditional Chinese medicine powder composition with a specific composition: 5 - 10 parts of Rehmannia glutinosa, 10 - 15 parts of Fructus Aurantii, 20 - 25 parts of Chrysanthemum morifolium, and 20 - 25 parts of Asparagus cochinchinensis; and the weight ratio of Asparagus cochinchinensis to Rehmannia glutinosa is 2 - 4.5:1, and the weight ratio of Chrysanthemum morifolium to Fructus Aurantii is 1.4 - 2.0:1. When added to the feed for feeding, it can not only promote the weight gain and feed conversion rate of yellow - feather broilers, but also increase the density of skin hair follicles of yellow - feather broilers and reduce the difference in hair follicle density among chicken individuals, so as to meet the appearance selection requirements of consumers for chilled yellow - feather broilers. Detailed Description of the Invention

[0018] The following further elaborates on the present invention with reference to embodiments, so that those skilled in the art can implement it according to the text of the specification.

[0019] For a feed additive for yellow - feather broilers of the present invention, to illustrate the technical content, the achieved objectives and effects of the present invention in detail, the following is explained with reference to embodiments.

[0020] Note: The percentages (%) appearing in the detailed description of the invention, unless otherwise specified, are all weight percentages (%wt).

[0021] Example 1

[0022] The feed additive for yellow - feather broilers in Example 1 of the present invention is a traditional Chinese medicine powder composition;

[0023] The traditional Chinese medicine powder composition is composed of the following raw materials in parts by weight: 5 parts of Rehmannia glutinosa, 10 parts of Aurantii Fructus Immaturus, 20 parts of Chrysanthemi Flos, and 20 parts of Asparagi Radix.

[0024] The above four traditional Chinese medicine raw materials are pulverized according to the standard of a pulverization fineness of 80 meshes, and the powders of the four traditional Chinese medicines are mixed evenly to obtain the traditional Chinese medicine powder composition of Example 1, that is, the feed additive for yellow - feather broilers in Example 1. Among them, the weight ratio of Asparagi Radix to Rehmannia glutinosa is 4:1, and the weight ratio of Chrysanthemi Flos to Aurantii Fructus Immaturus is 2.0:1.

[0025] Then, the obtained feed additive for yellow - feather broilers is added to the complete formula feed (also called basic feed) at a weight ratio of five per thousand (5‰) to obtain the feed for yellow - feather broilers in Example 1 of the present invention.

[0026] Specifically in this example, the complete formula feed used can be a commercially available complete formula feed for yellow - feather broilers.

[0027] Example 2

[0028] The feed additive for yellow - feather broilers in Example 2 of the present invention is a traditional Chinese medicine powder composition;

[0029] The traditional Chinese medicine powder composition is composed of the following raw materials in parts by weight: 7 parts of Rehmannia glutinosa, 13 parts of Aurantii Fructus Immaturus, 23 parts of Chrysanthemi Flos, and 21 parts of Asparagi Radix.

[0030] The above four traditional Chinese medicine raw materials are pulverized according to the standard of a pulverization fineness of 80 meshes, and the powders of the four traditional Chinese medicines are mixed evenly to obtain the traditional Chinese medicine powder composition of Example 2, that is, the feed additive for yellow - feather broilers in Example 2. Among them, the weight ratio of Asparagi Radix to Rehmannia glutinosa is 3:1, and the weight ratio of Chrysanthemi Flos to Aurantii Fructus Immaturus is 1.77:1.

[0031] Then, the obtained feed additive for yellow - feather broilers is added to the complete formula feed (also called basic feed) at a weight ratio of seven per thousand (7‰) to obtain the feed for yellow - feather broilers in Example 2 of the present invention.

[0032] Specifically in Example 2, the complete formula feed used has the same source as the complete formula feed in Example 1.

[0033] Example 3

[0034] The feed additive for yellow - feather broilers in Example 3 of the present invention is a traditional Chinese medicine powder composition;

[0035] The traditional Chinese medicine powder composition is composed of the following raw materials in parts by weight: 10 parts of Rehmannia glutinosa, 15 parts of Aurantii Fructus Immaturus, 25 parts of Chrysanthemi Flos, and 25 parts of Asparagi Radix.

[0036] The above four traditional Chinese medicine raw materials are pulverized according to the standard of a pulverization fineness of 80 mesh, and the powders of the four traditional Chinese medicines are mixed evenly to obtain the traditional Chinese medicine powder composition of Example 3, that is, the feed additive for yellow - feather broilers of Example 3. Among them, the weight ratio of asparagus root to rehmannia root is 2.5:1, and the weight ratio of chrysanthemum to fructus aurantii is 1.67:1.

[0037] Then, the obtained feed additive for yellow - feather broilers is added to the complete formulated feed (also known as the basic feed) at a weight ratio of ten per thousand (10‰) to obtain the feed for yellow - feather broilers of Example 3 of the present invention.

[0038] Specifically, in Example 3, the complete formulated feed used is from the same source as the complete formulated feed in Example 1.

[0039] Comparative Example

[0040] The formula of the poultry feed additive in the comparative example is only different from those in Example 1, Example 2, and Example 3 in that: the component ratios of the traditional Chinese medicine powder composition are different and are not within the ratio ranges involved in the content of this patent invention.

[0041] The traditional Chinese medicine powder composition in the comparative example is composed of the following raw materials in parts by weight: 5 parts of rehmannia root, 10 parts of fructus aurantii, 25 parts of chrysanthemum, and 25 parts of asparagus root.

[0042] Other technical contents are the same as those in Example 1 and will not be elaborated here.

[0043] Effect data

[0044] First, in order to prove the effects of the feed additive for yellow - feather broilers and its feed in Example 1, the inventor selected 9000 healthy Wenchang chicken chicks as the test chicken flock on May 16, 2018.

[0045] The entire feeding period was 17 weeks, and the feeding test site was Shanghai Shenghua Non - staple Food Co., Ltd.

[0046] During the brooding period (0 - 5 weeks old), they were uniformly fed; the feed used was the commercially available complete formulated feed for yellow - feather broilers at 0 - 5 weeks old, and the feeding operation method was uniformly carried out according to the brooding feeding method of the yellow - feather broiler feeding standard NYT 1871 - 2010.

[0047] The Wenchang chickens were grouped for feeding starting from 6 weeks of age. For the chickens at 5 weeks of age, they were grouped according to the average body weight of the group to ensure that the difference in average body weight between groups was not significant. They were divided into Control Group 1, Experimental Group 1, and Comparative Group 1, with 3000 chickens in each group. Each group was further divided into 3 replicate groups, with 1000 chickens in each replicate group. Control Group 1 was fed a basal diet (i.e., a complete formulated diet for yellow - feather broilers at 6 - 17 weeks of age commercially available, without adding the feed additive for yellow - feather broilers in Example 1), Experimental Group 1 was fed the feed for yellow - feather broilers in Example 1 (i.e., adding the feed additive for yellow - feather broilers in Example 1 to the basal diet), and Comparative Group 1 was fed the poultry feed in the comparative example (i.e., adding the poultry feed additive in the comparative example to the basal diet); the feeding operation method was uniformly carried out according to the feeding method for yellow - feather broilers between 6 - 17 weeks of age in the breeding standard NYT 1871 - 2010 for yellow - feather broilers.

[0048] Three indicators, including pre - slaughter body weight, eviscerated weight, and feed conversion ratio, were measured according to the agricultural industry standard NYT823 - 2020 "Terms and Definitions of Poultry Production Performance and Measurement and Calculation Methods" and NYT - 823 - 2004 "Terms and Definitions of Poultry Production Performance and Measurement and Statistical Methods". Among them, for pre - slaughter body weight and eviscerated weight at 17 weeks of age, 200 chickens were randomly sampled from Control Group 1, Experimental Group 1, and Comparative Group 1 for slaughter performance measurement; the method for measuring follicle density was: after slaughter and plucking, 60 chickens (30 males and 30 females) were randomly selected from each group. Taking the mid - dorsal line as the axis, the number of follicles in the area of 2 cm × 2 cm of the left - hand dorsal skin was counted.

[0049] For data processing and analysis, SPSS22.0 software was used, and One Way ANOVA was adopted for statistics, followed by Duncan multiple comparison. The results were expressed as mean ± standard error.

[0050] II. To prove the effects of the feed additive for yellow - feather broilers in Example 2 and its feed, the inventor selected 9000 healthy Guangxi Sanhuang chicken chicks as the experimental chicken flock on July 12, 2019.

[0051] The difference from the above - mentioned first part is only that: at 6 - 17 weeks of age, when grouped for feeding, the chickens at 5 weeks of age were randomly divided into Control Group 2, Experimental Group 2, and Comparative Group 2, with 3000 chickens in each group. Each group was further divided into 3 replicate groups, with 1000 chickens in each replicate group. Control Group 2 was fed a basal diet (i.e., a complete formulated diet for yellow - feather broilers at 6 - 17 weeks of age commercially available, without adding the feed additive for yellow - feather broilers in Example 2), Experimental Group 2 was fed the feed for yellow - feather broilers in Example 2 (i.e., adding the feed additive for yellow - feather broilers in Example 2 to the basal diet), and Comparative Group 2 was fed the poultry feed in the comparative example (i.e., adding the poultry feed additive in the comparative example to the basal diet).

[0052] The specific experimental procedures and data statistics methods for the rest are basically the same as those in the first part above, and will not be elaborated here.

[0053] The determination results of production performance indicators at 17 weeks of age are shown in Table 1 below.

[0054] Table 1

[0055]

[0056] Note: Different superscript letters in the same column of the table indicate significant differences (P<0.05), and the same superscript letters indicate no significant differences (P>0.05). The same applies to the following tables.

[0057] From the results in Table 1, it can be seen that at 17 weeks of age, the "pre-slaughter weight" and "eviscerated weight" of experimental group 2 were 61.3 g and 43.2 g higher than those of control group 2 respectively, with significant differences (P<0.05). This indicates that feeding with the feed supplemented with the feed additive for yellow - feather broilers in Example 2 of the present invention has an obvious promoting effect on the growth and weight gain of broilers. At 17 weeks of age, the "pre - slaughter weight" and "eviscerated weight" of experimental group 2 were 52.8 g and 41.1 g higher than those of comparison group 2 respectively, with significant differences (P<0.05). The feed conversion rate of experimental group 2 was lower than that of control group 2 and comparison group 2, and the efficiency of feed conversion was improved. These three production performance indicators show that when the weight ratios of asparagus root to rehmannia root and chrysanthemum flower to bitter orange in the traditional Chinese medicine powder composition are at specific ratios, it has an obvious promoting effect on the growth and weight gain of Sanhuang chickens.

[0058] The Sanhuang chicken carcass skin hair follicle indicators are shown in Table 2. The hair follicle density and hair follicle density uniformity of experimental group 2 are higher than those of control group 2 and comparison group 2, indicating that when the weight ratios of asparagus root to rehmannia root and chrysanthemum flower to bitter orange in the traditional Chinese medicine powder composition are at specific ratios, it can significantly increase the pore density per unit area of the broiler skin and reduce the difference in hair follicle density among individual chickens, achieving the goal of improving the appearance of the chilled fresh - type broiler carcass through nutrition.

[0059] Table 2

[0060]

[0061] Note: Different superscript letters in the same column of the table indicate significant differences (P<0.05), and the same superscript letters indicate no significant differences (P>0.05).

[0062] In the above - mentioned Example 1, Example 2 and Example 3, the traditional Chinese medicine powder composition and corn starch binder can also be mixed to make the feed additive for yellow - feather broilers into a granule dosage form.

[0063] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those skilled in the art, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to specific details.

Claims

1. A feed additive for yellow - feather broilers, characterized in that, The feed additive for yellow - feather broilers contains a traditional Chinese medicine powder composition, and the traditional Chinese medicine powder composition is composed of the following raw materials in parts by weight: 7 parts of Rehmannia glutinosa, 13 parts of Fructus Aurantii, 23 parts of Chrysanthemum morifolium, and 21 parts of Asparagus cochinchinensis; The particle size of the traditional Chinese medicine powder composition is 80 mesh; the weight ratio of the traditional Chinese medicine powder composition to the complete formulated feed is 5 - 10:1000; The feed additive for yellow - feather broilers is used for raising yellow - feather broilers at the age of 6 - 17 weeks, improving the pore density per unit area of the broiler skin and reducing the difference in hair follicle density among individual chickens; The yellow - feather broilers are Guangxi Sanhuang chicken chicks.

2. The feed additive for yellow - feather broilers according to claim 1, wherein, The feed additive for yellow - feather broilers is in the form of granules.

3. A feed for yellow - feather broilers, characterized in that, It includes the feed additive for yellow - feather broilers according to any one of claims 1 - 2, and a complete formulated feed, and the weight ratio of the traditional Chinese medicine powder composition to the complete formulated feed is 5 - 10:1000.

4. Application of a feed additive for yellow - feather broilers, characterized in that, Apply the feed additive for yellow - feather broilers according to any one of claims 1 to 2 to the raising of yellow - feather broilers.

5. A method for raising yellow - feather broilers, characterized in that: Raise yellow - feather broilers at the age of 6 - 17 weeks with the feed for yellow - feather broilers according to claim 3.

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