不同体重指数父系雄性对海拉杂交母系家兔生产能力的影响

T. Yakubets, Vasyl Bochkov
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摘要

现代家兔杂交母系是通过杂交祖系获得的。因此,研究使用不同体重指数的海拉杂交亲本系雄性对杂交亲本母兔主要育种性状性能的影响是有意义的。本研究的目的是通过繁殖标志调查母系杂交兔的生产力水平,并考虑一些出生的主要育种性状的动态。实验选用223只海拉杂交母系家兔,来自不同体重指数的雄性家兔。为了实现这一目标,根据家兔父亲体重指数的值,将家兔分组,第1组≤100单位,第2组从100到120单位,第3组≥120单位。测定兔点火后的活重、胎次、新生兔重、产奶量和断奶时的活重。首次点火时体重指数高的公兔,其多胎母兔数量明显超过同胎母兔1.16 ~ 1.23个动物单位(p≤0.05),产奶量明显超过同胎母兔6 ~ 6.5%。根据第三次点火结果,体重指数高的公兔在多胎率(p≤0.05)、产奶量(p≤0.05)和复合指数均显著高于其他公兔(p≤0.05)。从第一次点火到第三次点火,兔子的多胎率平均增加6.5%。第2组和第3组的出生活重呈上升趋势,分别提高3.2%和4.2%。从第一次点火到第三次点火,兔的产奶量平均提高了38.6%。本研究结果的实际意义在于,为获得高产母系杂交兔,宜选用体重指数≥120单位的祖系公兔
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Influence of males of the paternal line with different weight index on the productivity of rabbits of the maternal form of the Hyla Cross
The maternal form of modern rabbit crosses is obtained by crossing ancestral lines. Therefore it is relevant to investigate the effect of using males of the parental line of the Hyla cross with different weight indices on the performance of the main breeding traits of the female rabbits of the parental form of the cross. The purpose of the study was to investigate the level of productivity of rabbits of the maternal form of cross by reproduction signs and to consider the dynamics of the main breeding traits for a number of births. The experiments used 223 rabbits of the maternal form of the Hyla cross, which came from males with different weight indices. To achieve this goal, groups of rabbits were formed, depending on the value of their father's weight Index – Group 1 – ≤ 100 units, Group 2 – from 100 to 120 units, Group 3 – ≥ 120 units. The live weight of rabbits after kindling, multiparity, the weight of newborn rabbits, milk yield, and the live weight of rabbits at the time of weaning were determined. Female rabbits that came from males with a high weight index at first kindling significantly outnumbered their peers in multiparity by 1.16-1.23 animal units (p ≤ 0.05), and in milk yield – by 6-6.5%. Rabbits whose parents were males with a high weight index according to the results of the 3rd kindling prevailed over their peers from other males in multiparity (p ≤ 0.05), milk yield (p ≤ 0.05), and also had significantly higher values of complex indices (p≤0.05). From the 1st to the 3rd kindling, the multiparity of rabbits increases, on average, by 6.5%. Live weight at birth of rabbits in Groups 2 and 3 had a positive trend and increased by 3.2% and 4.2%, respectively. On average, the milk yield of rabbits increased by 38.6% from the first to the third kindling. The practical significance of the results lies in the fact that to obtain highly productive rabbits of the maternal cross form, it is advisable to use males of the ancestral form with a weight index ≥ 120 units
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