Breeding method of black Yao ma chickens

Abstract

The invention relates to a breeding method of black Yao ma chickens. The breeding method is characterized by comprising the following steps of step 1, selecting parent breeding chickens; step 2, establishing a pure line and a family for base group breeding chickens; step 3, identifying the pure line of base group breeding chickens and the family of base group breeding chickens; step 4, establishing a core group and a family for the selected and remaining breeding chickens and producing the new generation of family; step 5, producing ancestral breeding chickens through the new generation of family of breeding chickens in the step 4, producing parent breeding chickens through the ancestral breeding chickens, producing goods generation of chickens through the parent breeding chickens and obtaining the new strain of black Yao ma chickens. According to the breeding method of the black Yao ma chickens, the feather colors of the bred black Yao ma chickens are basically as same as each other, the feather colors of the appearance of cocks are red, black and yellow and the purity is 100%, and the ma feather colors of the appearance of hens are dark brown and red and the purity is more than 95%; the egg laying number of 66 week age of hen breeding is more than 140 every day and the hatching egg fertilization rate is more than 90%; 120 day age of cocks are more than 2100 g, 120 day age of hens are more than 1600 g, and the weight coefficient of variation is less than 10%.

Description

technical field [0001] The invention relates to a breeding method for a new breed of poultry, in particular to a breeding method for a new hybrid breed of Guangxi Nandan Yao chicken and Guizhou Sandu Shui Autonomous County native chicken. Background technique [0002] Yao chicken is an annals of genetic resources of livestock and poultry in China - a local breed. It is called Nandan Yao chicken in Guangxi. It is mainly distributed in the places where the Yao people live in Nandan County, Guangxi. Due to geographical factors, it is also distributed in some areas of Guizhou Province. Yao chicken is mainly produced in the mid-alpine region on the edge of the Yunnan-Guizhou Plateau, with an average altitude of about 800 meters and a mountainous area with a large temperature difference between day and night. It has formed an excellent quality of cold resistance and adaptability, less subcutaneous fat, and firm and fresh meat. However, due to its long-term traditional folk breedin...

AI Technical Summary

Problems solved by technology

However, due to its long-term traditional folk breeding, lack of systematic artificial breeding, body weight varies. According to observations, the adult rooster has the largest body weight reaching 2.55 kg, the smallest individual body weight is only about 1.7 kg, and the adult hen has the largest body weight. The individual reaches 2.2 kg, and the smallest individual weighs only about 1.1 kg; the egg production performance is seriously uneven. Statistics show that the highest record of individual annual egg production reaches

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