Method for breeding a specialized line of wenchang chicken with high feed conversion rate

Abstract

The application discloses a high-feed-reward Wenchang chicken specialized strain breeding method, and the application screens out the ancestral parent and the paternal parent from the aspects of the day age, the feather color, the feed weight ratio and the body weight, crosses the ancestral parent to obtain the female parent, and crosses the screened female parent with the paternal parent to obtain the high-feed-reward offspring. The Wenchang chicken offspring not only has high feed reward, but also has high body weight uniformity. Compared with before the breeding, the feed weight ratio is reduced by more than 20%, and the body weight uniformity is increased by more than 40%. The breeding method is simple and easy to implement, and the target Wenchang chicken strain can be quickly obtained.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of Wenchang chicken breeding, in particular to a method for breeding a Wenchang chicken specialized line with high feed reward. BACKGROUND

[0002] The so-called feed reward refers to the amount of product (egg, meat) obtained per unit weight of feed in chicken production. Feed reward is an important indicator of economic benefit of chicken production, which indicates the ability of chickens to utilize feed, and is also a basis for checking the nutritional level of feed, the quality of breeding chickens, and formulating various production indicators. Whether it is for laying hens, breeding chickens, or broiler chickens, people want a higher feed reward, and the higher the feed reward, the lower the cost of production input. The feed reward of chicken production is usually measured by feed conversion ratio, and the smaller the feed conversion ratio, the higher the feed reward.

[0003] Wenchang chicken is a local excellent broiler breed in Hainan Province, which has been bred by local farmers under the unique geographical and climatic conditions of Hainan Island for a long time. Over the years, the breed has diversified, and some breeds have degenerated. From the end of the last century to the beginning of this century, without seed preservation and purification, some domestic and foreign breeds were introduced for blind "improvement" of Wenchang chicken, resulting in mixed germplasm resources, and Wenchang chicken was once on the verge of extinction. At present, it is very important to carry out Wenchang chicken seed preservation and breeding. SUMMARY

[0004] In view of this, the present application provides a method for breeding a Wenchang chicken specialized line with high feed reward.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A method for breeding a Wenchang chicken specialized line with high feed reward, comprising the following steps:

[0007] (1) Select healthy roosters from the base group, and select roosters according to body weight of 900-1100g at 50-60 days old, and select ancestral roosters in combination with feed conversion ratio <4.0, body weight of 1700-2000g and feather color at 110-120 days old; the feather color is jujube red feather, and the neck has a golden yellow ring-shaped feather belt;

[0008] Select healthy hens from the base group, and select hens according to body weight of 800-900g at 50-60 days old, and select ancestral hens in combination with body weight of 1400-1600g and feather color at 110-120 days old; the feather color is yellow-brown feather, and the neck has a broken hemp flower;

[0009] Select healthy cock from the basic group, measure the feed conversion ratio and body weight of Wenchang chicken basic group at 110-120 days old, select Wenchang chicken with the feed conversion ratio below the average value and the body weight above the average value as the father;

[0010] (2) Cross the ancestor cock with the ancestor hen, select the female parent from the cross offspring with the body weight of 1600-1800g, the shank length of 6-7cm and the feather color at 110-120 days old; cross the female parent with the male parent to obtain the offspring.

[0011] Further, the feather color in step (2) is yellow brown.

[0012] Further, the male parent is: select healthy cock from the basic group, measure the feed conversion ratio and body weight of Wenchang chicken basic group at 110-120 days old, select Wenchang chicken with the feed conversion ratio below the average value, the body weight above the average value and the full white feather color as the male parent.

[0013] Further, in step (1), select healthy cock from the basic group, select cock according to the body weight of 1000-1100g at 60 days old, select ancestor cock according to the feed conversion ratio <4.0, the body weight of 1700-1900g and the feather color at 110 days old.

[0014] Further, in step (1), select healthy hen from the basic group, select hen according to the body weight of 800-900g at 60 days old, select ancestor hen according to the body weight of 1400-1600g and the feather color at 110 days old.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] The present application selects the ancestor parent and the male parent from the Wenchang chicken basic group with the disordered feather color, the large difference in the body weight, the body shape and the egg laying performance among individuals, the female parent is obtained by crossing the ancestor parent, and the high feed reward offspring is obtained by crossing the selected female parent with the male parent. The Wenchang chicken offspring not only has high feed reward, but also has high body weight uniformity. Compared with before the selection, the feed conversion ratio is reduced by more than 20%, and the body weight uniformity is increased by more than 40%.

[0017] The breeding method of the present application is simple and easy to implement, and the target Wenchang chicken strain can be quickly obtained. DETAILED DESCRIPTION

[0018] In order to make those skilled in the art better understand the technical content of the present application, the present application is further described below in combination with specific examples.

[0019] Example 1: a high feed reward Wenchang chicken specialization strain breeding method

[0020] (1) Individual feeding, healthy male chickens were selected from the Wenchang chicken base group at 35 days of age. At 60 days of age, male chickens were selected according to body weight (1000-1100g). At 110 days of age, the ancestral male chickens were selected in combination with feed conversion ratio (<4.0), body weight (1700-1900g), and feather color (maroon feather, golden yellow ring-shaped feather belt on the neck).

[0021] Individual feeding, healthy female chickens were selected from the Wenchang chicken breeder female chickens at 35 days of age. At 60 days of age, female chickens were selected according to body weight (800-900g). At 110 days of age, the ancestral female chickens were selected in combination with body weight (1400-1600g) and feather color (yellow-brown feather, broken hemp flower on the neck).

[0022] Individual feeding, the feed conversion ratio and body weight of the Wenchang chicken base group were determined at 120 days of age. The Wenchang chicken with a feed conversion ratio below the average and a body weight above the average and a full white feather color was selected as the father.

[0023] (2) The ancestral male chickens were crossed with the ancestral female chickens, and the female parent was selected from the cross offspring at 120 days of age in combination with body weight (1600-1800g), tibial length (6-7cm), and feather color (yellow-brown); the female parent was crossed with the male parent to obtain offspring.

[0024] Table 1

[0025]

[0026]

[0027] The results show that the feed conversion ratios were reduced from 4.33 and 4.58 before selection to 3.31 and 3.56 after selection, respectively, with a decrease of 23.56% and 22.27%, respectively. The uniformity of body weight at 93 days of age after selection was increased from 60.20% and 66.45% before selection to 95.60% and 96.15% after selection, respectively, with an increase of 58.8% and 43.69%, respectively.

[0028] Example 2: A method for selecting a high-feed-reward Wenchang chicken specialized line

[0029] In this example, the parents were not selected based on feather color.

[0030] (1) Individual feeding, healthy male chickens were selected from the Wenchang chicken base group at 35 days of age. At 60 days of age, male chickens were selected according to body weight (1000-1100g). At 110 days of age, the ancestral male chickens were selected in combination with feed conversion ratio (<4.0), body weight (1700-1900g).

[0031] The individual chickens were fed with individual feed. The healthy cockerels were selected from the Wenchang chicken basic group at 35 days old. The cockerels were selected according to the body weight (1000-1100g) at 60 days old. The ancestral cockerels were selected according to the feed conversion ratio (<4.0), the body weight (1700-1900g) and the feather color (the jujube red feather with the golden yellow ring feather belt at the neck) at 110 days old.

[0032] The individual chickens were fed with individual feed. The Wenchang chicken basic group feed conversion ratio and the body weight were determined at 120 days old. The Wenchang chickens with the feed conversion ratio below the average value and the body weight above the average value were selected as the male parent.

[0033] (2) The female parent was selected from the cross offspring at 120 days old according to the body weight (1600-1800g) and the shank length (6-7cm). The offspring was obtained by crossing the female parent with the male parent.

[0034] Table 2

[0035]

[0036] The results show that the feed conversion ratios are reduced from 4.15 and 4.50 before the selection to 3.62 and 3.83 after the selection, respectively, which are reduced by 12.77% and 14.89%, respectively. The 93-day-old body weight uniformity (the percentage of the number of the chickens within the average body weight ±10% range to the total number of the chickens) is increased from 68.45% and 70.26% before the selection to 85.60% and 88.30% after the selection, respectively, which are increased by 25.05% and 25.68%, respectively.

[0037] Example 3 A method for selecting a high feed reward Wenchang chicken specialized strain

[0038] The difference between this example and example 1 is that the feather color of the male parent is yellow brown.

[0039] (1) The individual chickens were fed with individual feed. The healthy cockerels were selected from the Wenchang chicken basic group at 35 days old. The cockerels were selected according to the body weight (1000-1100g) at 60 days old. The ancestral cockerels were selected according to the feed conversion ratio (<4.0), the body weight (1700-1900g) and the feather color (the jujube red feather with the golden yellow ring feather belt at the neck) at 110 days old.

[0040] The individual chickens were fed with individual feed. The healthy hens were selected from the Wenchang chicken breeder hen reserve at 35 days old. The hens were selected according to the body weight (800-900g) at 60 days old. The ancestral hens were selected according to the body weight (1400-1600g) and the feather color (the yellow brown feather with the broken hemp flower at the neck) at 110 days old.

[0041] Individual feed feeding was taken, and the feed conversion ratio and body weight of the Wenchang chicken basic group were determined at 120 days of age. The Wenchang chicken with the feed conversion ratio below the average value and the body weight above the average value and the yellowish brown feather color was selected as the male parent.

[0042] (2) The female parent was selected from the 120-day-old hybrid offspring in combination with the body weight (1600-1800g) and tibial length (6-7cm) by hybridizing the ancestral male chicken with the ancestral female chicken; the offspring was obtained by hybridizing the female parent with the male parent.

[0043] Table 3

[0044]

[0045] The results show that the feed conversion ratios are reduced to 3.72 and 3.95 respectively from 4.20 and 4.63 respectively before the selection, and are reduced by 11.42% and 14.69% respectively. The body weight uniformity at 93 days of age is increased to 80.50% and 85.20% respectively after the selection from 61.30% and 66.50% respectively before the selection, and is increased by 31.32% and 28.12% respectively.

[0046] Example 4: A method for selecting a high-feed-reward Wenchang chicken specialized line

[0047] The difference between this example and example 1 is that the female parent is not selected according to the feather color.

[0048] (1) Individual feed feeding was taken, and the healthy male chicken was selected from the Wenchang chicken of the basic group at 35 days of age. The male chicken was selected according to the body weight (1000-1100g) at 60 days of age. The ancestral male chicken was selected in combination with the feed conversion ratio (<4.0), the body weight (1700-1900g), and the feather color (maroon feather, golden yellow ring-shaped feather belt on the neck) at 110 days of age.

[0049] Individual feed feeding was taken, and the healthy female chicken was selected from the Wenchang chicken breeder female chicken at 35 days of age. The female chicken was selected according to the body weight (800-900g) at 60 days of age. The ancestral female chicken was selected in combination with the body weight (1400-1600g) and the feather color (yellowish brown feather, broken hemp flower on the neck) at 110 days of age.

[0050] Individual feed feeding was taken, and the feed conversion ratio and body weight of the Wenchang chicken basic group were determined at 120 days of age. The Wenchang chicken with the feed conversion ratio below the average value and the body weight above the average value and the all-white feather color was selected as the male parent.

[0051] (2) The female parent was selected from the 120-day-old hybrid offspring in combination with the body weight (1600-1800g) and tibial length (6-7cm) by hybridizing the ancestral male chicken with the ancestral female chicken; the offspring was obtained by hybridizing the female parent with the male parent.

[0052] Table 4

[0053]

[0054] The results show that the feed conversion ratio is reduced from 4.26, 4.68 to 3.60 and 3.72 respectively, which is reduced by 15.49% and 20.51% respectively. The uniformity of the body weight at 93 days of age is increased from 62.33%, 67.20% before selection to 86.62%, 90.13% after selection, which is increased by 38.97%, 34.12% respectively.

[0055] Example 4: A method for breeding a high-feed-return Wenchang chicken specialized line

[0056] (1) The individual Wenchang chicken is selected from the basic group at 35 days of age. The male chicken is selected according to the body weight (900-1000g) at 50 days of age. The male chicken is selected according to the feed conversion ratio (<4.0), the body weight (1800-2000g) and the feather color (jacinth red feather, golden yellow ring-shaped feather belt on the neck) at 120 days of age.

[0057] The individual Wenchang chicken is selected from the basic group at 35 days of age. The female chicken is selected according to the body weight (800-900g) at 50 days of age. The female chicken is selected according to the body weight (1400-1600g) and the feather color (yellow-brown feather, broken hemp flower on the neck) at 120 days of age.

[0058] The individual Wenchang chicken is selected from the basic group at 35 days of age. The male chicken is selected according to the feed conversion ratio (<4.0), the body weight (1800-2000g) and the feather color (jacinth red feather, golden yellow ring-shaped feather belt on the neck) at 120 days of age.

[0059] (2) The female chicken is selected from the hybrid offspring at 110 days of age according to the body weight (1600-1800g), the shank length (6-7cm) and the feather color (yellow-brown). The female chicken is hybridized with the male chicken to obtain the offspring.

[0060] Table 5

[0061]

[0062]

[0063] The results show that the feed conversion ratio is reduced from 4.25, 4.51 to 3.33 and 3.51 respectively, which is reduced by 21.65% and 22.17% respectively. The uniformity of the body weight at 93 days of age is increased from 61.33%, 66.00% before selection to 95.50%, 96.00% after selection, which is increased by 55.71%, 45.45% respectively.

[0064] The above merely provides part of the embodiments of the present application but does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall fall into the protection scope of the present application.

Claims

1. A method for breeding a high feed conversion Silkie specialized line, characterized in that, The method comprises the following steps: (1) selecting healthy roosters from a basic group, and selecting roosters according to a body weight of 900-1100 g at an age of 50-60 days, and selecting ancestral roosters according to a feed-weight ratio of <4.0, a body weight of 1700-2000 g and a feather color at an age of 110-120 days; the feather color is a jujube red feather, and the neck has a golden yellow ring-shaped feather belt; selecting healthy hens from the basic group, and selecting hens according to a body weight of 800-900 g at an age of 50-60 days, and selecting ancestral hens according to a body weight of 1400-1600 g and a feather color at an age of 110-120 days; the feather color is a yellow-brown feather, and the neck has a broken hemp flower; selecting healthy roosters from the basic group, and measuring a feed-weight ratio and a body weight of the Wenchang chicken basic group at an age of 110-120 days, and selecting the Wenchang chicken with a feed-weight ratio below an average value, a body weight above an average value and a full-white feather as a father; (2) crossing the ancestral roosters with the ancestral hens, and selecting a mother from the hens according to a body weight of 1600-1800 g, a shank length of 6-7 cm and a feather color at an age of 110-120 days after the crossing; crossing the mother with the father to obtain offspring, and the feather color is a yellow-brown feather.

2. The method for breeding specific line of Wenchang chicken with high feed conversion ratio according to claim 1, characterized in that, In step (1), healthy roosters are selected from a basic group, and roosters are selected according to a body weight of 1000-1100 g at an age of 60 days, and ancestral roosters are selected according to a feed-weight ratio of <4.0, a body weight of 1700-1900 g and a feather color at an age of 110 days.

3. The method for breeding specific line of Wenchang chicken with high feed conversion ratio according to claim 1, characterized in that, In step (1), healthy hens are selected from a basic group, and hens are selected according to a body weight of 800-900 g at an age of 60 days, and ancestral hens are selected according to a body weight of 1400-1600 g and a feather color at an age of 110 days.

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