Cравнительная эффективность интенсивного выращивания некоторых кроссов цыплят- бройлеров

Abstract

The reseaches were done at the centre of selection and hybridization Harbobat. We closed varions parental lines of hens race coruish and maternal ones Plyomth-rock, aiming to get four/linear hybrids (B4A3R2C4). The reproduced youth breeds and develops optimally in comparison with commercial hybrids. Pullets and males attain their seual precocity at the age of 20-22 weeks of life in accordance with the age physiological requirements.