New maternal line of the Cornish breed of the “Smena” selection and genetic center

Abstract

The article is devoted to the assessment of the selection effect of the new line CM6. It was found that the five-year selection of meat hens of this line resulted in their egg production increase by 15.5 and 1.25% in 30 and 60 weeks of life (2020). The increase in the yield of hatching eggs, their fertilization, hatching of chickens and the yield of chickens per 1 hen was 1.4; 1.1; 1.7; 5.1%, respectively. The live weight of 5-week-old young birds is increased both for cockerels and hens by 10.2-8.7%; enhanced muscularity of the chest and legs at this age by 2.7-2.6% and 5.6-5.7%; increased feed conversion by 3.3-2.5% (2020) pursuant to gender. The integrated indicator - the productivity index of broilers of the combination CM5679 in 2020 was 389 units, which is 25.5% higher than in 2016. The productivity of meat hens of the mother line of the Cornish CM6 breed is high, the bird is competitive.