Method for producing breed of black-shin dorking

A broiler and black-skinned technology, which is applied in animal husbandry and other fields, can solve the problems affecting the development scale of chicken breeds, low meat production performance, and high feeding costs, and achieve the effects of good flavor and nourishing effect, meeting consumer demand, and high production performance

Inactive Publication Date: 2010-12-22
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these breeds have not been systematically selected, and their growth rate is slow, their productivity is low, their feeding costs are high, and their meat production performance is low...

Method used

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  • Method for producing breed of black-shin dorking
  • Method for producing breed of black-shin dorking
  • Method for producing breed of black-shin dorking

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) The Tianfu black-bone chicken with black feathers and skin was established as a female line, reared in single cages, artificially inseminated, and purely multiplied according to feather color as the zero generation; according to the individual records of the zero generation (egg production, fertilization rate, hatching rate) ) Select and build 17 patrilineal families as the core group of the first generation, and use the zero-generation cock and the first-generation hen to match to obtain the second-generation group. On this basis, build the core group and the multiplication group of 30 families, and adopt the family breeding method 6 generations of pure line breeding were carried out;

[0030] According to the analysis of the genetic phenomenon of feather color in the first three generations of mountain black-bone chickens in Sichuan, the breeding program was determined to focus on the black-feather line, control a certain number of white-feather lines, and keep a ce...

Embodiment 2

[0039] Embodiment 2 Black-skinned broiler production performance measurement result

[0040] 1. The main production performance of breeder chickens:

[0041] Laying age: the age at which 5% of all hens start laying eggs is 165 days, compared with the average value of Sichuan mountain silky (165-175 days) (Note: the following are all compared with Sichuan mountain silky Comparison) 5 days earlier; egg weight 58 grams, increased by 2.5 grams (the average egg weight of Sichuan mountain silky is 55.5 grams); egg production at 68 weeks was 168, increased by more than 20 (Sichuan mountain silky 72 148-155 eggs per week); feed-to-egg ratio 3.8:1, 0.2 reduction (Sichuan mountain black-bone chicken 4:1); mortality rate during laying period is less than 10%, 8% reduction (Sichuan mountain black-bone chicken Chicken is 18%); hugging property is lower than 8%, decreased by 64% (Sichuan mountain silky is 72%); fertilization rate is 91%, increased by 6% (Sichuan mountain silky is 85%); hat...

Embodiment 3

[0061] Embodiment 3 Measuring results of black-skinned broiler quality traits

[0062] The amino acid content of 8-month-old black-skinned broiler chickens was determined to be 62.80% (61.10% for Sichuan mountain black-bone chickens), which were 13.78% (12.08%) higher than native chickens (free-range chickens raised by farmers); the fat content was 13.00% lower than native chickens. % (13.18%); the determination results of 17 kinds of amino acids are shown in Table 7.

[0063] Table 7 Determination results of 17 kinds of amino acids (%)

[0064]

[0065] It can be seen from Table 7 that except for the lower content of aspartic acid and higher content of proline, the rest are similar to silky chicken.

[0066] The pH value, cooked meat rate, water loss rate, shear force and fiber diameter of 15-week-old black-skinned broiler chicken, Sichuan mountain black-bone chicken and Lingnan yellow chicken were measured, and the results are shown in Table 8.

[0067] Table 8 Least sq...

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Abstract

The invention provides a method for producing breed of a black-skin dorking, which comprises the following steps: (1) building a line taking a Tianfu black-bone chicken with black feathers and black skin as a maternal line, adopting a family method of breeding to perform pure line breeding to obtain a Tianfu balck-bone chicken with black skin; (2) conducting hybridization and backcross by taking a white plymouth rock as a male parent and taking the Tianfu black-bone chicken with black skin a female parent to obtain a group containing more than 75% of Tianfu black-bone chicken (B1 line); (3) conducting hybridization and backcross by taking the Tianfu black-bone chicken with black skin as a male parent and taking a Sichuan mountain black-bone chicken with back feathers and black skin as a female parent and introducing 25% of Sichuan mountain black-bone chicken into the Tianfu black-bone chickens (B2 line); and (4) performing hybridization by taking the B1 line as a male parent and taking the B2 line as a female parent, carrying out crossing fixation, closing and breeding, and adopting the family method of breeding and a positive and negative recurrent selection method to perform the pure line breeding to obtain a new black-skin dorking line. The new line has the advantages of unified appearance, black (dark) carcass skin, high production performance and good mouthfeel, flavor and nourishing effect.

Description

technical field [0001] The invention relates to a method for producing black-bone chickens, in particular to a method for producing black-skinned broilers. Background technique [0002] At present, with the improvement of people's living standards, the demand for food has also undergone a fundamental change. In addition to considering the rich nutritional content, higher requirements are also put forward for the flavor, taste, color and nourishment of food. [0003] In the past, as meat-eating chicken breeds in my country, in addition to eliminating the old chickens of egg breeds, they were mainly "fast and large" broiler chickens imported from abroad and local native breed chicken breeds in my country. The former has a fast growth rate and feed remuneration. High, farmers can obtain certain economic benefits, and the best eating methods are roasting, roasting and frying. However, as the market is in line with international standards and the entry of WTO, its market and pros...

Claims

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Application Information

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IPC IPC(8): A01K67/027
Inventor 杨志勤胡耀东刘益平许峰朱庆
Owner SICHUAN AGRI UNIV
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