Breeding of Plymouth Rock Meat Chickens at the Smena Breeding and Genetics Center

摘要

It has been found that the live weight at the age of 35 days in five generations of selection increases in the line B7 and B9for male birds by 12.0 and 9.0%, for female birds—by 9.2 and 8.2%, egg fertilization—by 1.6 and 1.4%, hatching of chicks—by1.0 and 1.5%, hatching of chicks from one egg layer—by 3.9 and 2.5%. The yield of meat from one egg layer of maternal parent form B79 is higher in comparison with the cross "Smena7" by 6.3%.