Method for breeding medium-speed black-bone chickens with high black color

Abstract

The invention discloses a method for breeding medium-speed black-bone chickens with high black color, which comprises the following steps: (1) taking silky black-bone chickens as a first male parent, namely an S1 line; (2) taking silk-feather black-bone chickens as female parents, namely an S2 system; (3) with silky-feather black-bone chickens as breeding materials, introducing recessive white-feather chicken lineage as a terminal male parent, namely a line B; (4) producing a parent generation S1S2 line by using the S1 line and the S2 line; and (5) producing commercial chicken BS1S2 by the B line and the parent generation S1S2 line. According to the method, the male line and the female line are matched and hybridized to produce the commercial generation (BS1S2), the cocks and the hens of the commercial generation have the characteristics of'ten-whole ', the black color uniformity reaches 90% or above, the brightness L values of the back skin, the chest skin and the leg skin of the 70-75-day-old commercial generation listed are not higher than 40, 35 and 35, carcasses are attractive, good meat quality is achieved, the marketing standard of medium-speed slaughter type high-quality chickens is met, and meanwhile live chickens can be marketed.

Description

technical field [0001] The invention relates to the technical field of poultry breeding, in particular to a method for cultivating medium-speed silkies with high blackness. Background technique [0002] As an important part of high-quality broiler chicken, silky chicken is favored by consumers because of its extremely high nutritional value and medicinal value. The tonic effect of silky chicken is mainly based on its melanin content. The economic and medicinal value of melanin is closely related to the "black color" of silky chicken. In consumption, people are used to judging the quality by its blackness, and the blackness of black-bone chicken depends on the level of melanin content in the body, and directly affects the quality and efficacy of black-bone chicken. Higher, the higher the melanin content. [0003] The price of black-bone chicken is high, and the breeding efficiency is much higher than that of ordinary breeds. With people's attention to food safety and healt...

AI Technical Summary

Problems solved by technology

At present, most of the black-bone chicken breeds in the market grow slowly, and the time to market (about 120 days) is relatively late. The skin is dark and uneven, and the carcass is not beautiful enough, so it is not suitable for marketing after slaughter.

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