Evaluation of reproductive and productive qualities of roosters of different lines of the IZA-F-15 cross

Abstract

Artificial insemination of poultry allows for an increase in reproductive qualities, reduces feed costs for products, and improves breeding work. The authors evaluated the reproductive and productive attributes of roosters of two different lines on adult birds of the IZA-F-15 cross by phases and during the effective period. All hens in both groups belonged to the maternal form of this cross. It was found that the males of the M-22 line were superior to their peers of the M-99 line in terms of ejaculate volume and the number of sperm per 1 ml in the productive period phases and for the entire cycle of their use. The sperm parameters (number of standard forms of spermatozoa and their motility) were similar in both groups of roosters and amounted to 71.35 - 73.79% and 7.07 - 7.5 points, respectively. Roosters of the M-22 line were superior to those of the M-99 line in terms of a set of indicators of reproductive qualities (ejaculate volume, sperm count per 1 ml, fertility and hatching egg yield). Differences in hands were statistically significant. However, the egg production of laying hens and the average weight of their eggs were high. Using males of different lines in artificial insemination did not reveal significant differences in these indicators. The fertility of eggs and the yield of hatching eggs significantly increased in hens inseminated with the sperm of M-22 roosters (group 2), compared with the control, respectively, from 95.94 to 97.33 and from 89.14 to 91.14%. At the same time, the output of broiler chickens in both groups was at a high level and almost the same (80.21 and 82.25%).