A method for rapid seed production of early-maturing and high-quality Sanhuang chickens
A three-yellow chicken and early-maturing technology, which is applied in animal husbandry and other fields, can solve problems such as unsatisfactory economic benefits, large coefficient of variation in body weight, and low egg production of hens, and achieve geographical distance and long kinship, early sexual maturity, and chick production. The effect of many
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[0018] (1) Select 40 roosters with a comb height of more than 2 cm in the 42-day-old Guangxi Sanhuang chicken, and 400 hens with a comb height of more than 0.5 cm, as the basic group, and establish a pedigree record file;
[0019] (2) Self-propagation of male and female chickens, using individual selection and family selection methods, 42-day-old roosters with a comb height of less than 2.3 cm and hens with a comb height of less than 0.6 cm were eliminated. When the hens were raised to 30 weeks of age (the peak egg production period), they were bred according to the male-to-female ratio of 1:10, and the pedigree was hatched, and 3540 offspring mixed male and female chicks were obtained as the first generation, and a pedigree record file was established;
[0020] (3) Carry out family selection for the first generation to improve uniformity and precociousness;
[0021] (4) Steps (2) and (3) were repeated to cultivate a precocious line of Guangxi Sanhuang chickens, including 110 ...
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