张掖肉牛世代选育繁殖性能研究

Study on breeding performance of Zhangye beef cattle in different generations

中文关键词: 张掖肉牛  世代选育  繁殖性能

英文关键词: Zhangye beef cattle  Generation breeding  Reproductive performance

中文摘要:

      【目的】研究张掖近20年来选育的肉牛新品种各世代公、母牛繁殖性能，为种群扩繁和高效推广利用提供科学依据。【方法】利用张掖肉牛新品种选育技术资料，对4个世代的选育张掖肉牛配种、产犊记录进行分类汇总、统计分析，数据用Excel 2010进行初步整理。【结果】张掖肉牛母牛初配年龄为 15～18月龄, 初配体重为380～420公斤, 产犊月龄为 21～24月龄。横交选育的不同世代母牛表现出较好的繁殖性能, 平均犊牛成活率 97.9 %, 繁殖成活率 81.74 %。

英文摘要:

      Abstract:【Objective】To study the reproductive performance of new beef cattle breeds in zhangye in recent 20 years, and to provide scientific basis for population propagation and efficient promotion and utilization. 【Methods】 The breeding and calving records of four generations of Zhangye beef cattle were sorted out, classified, summarized and statistically analyzed by using the technical data of new breed breeding of Zhangye beef cattle. The data were sorted out by Excel 2010. 【Results】 The initial mating age of zhangye beef cattle was 15 ~ 18 months, the initial mating weight was 380 ~ 420 kg, the calving age was 21 ~ 24 months, and the initial mating age of bulls was 14 ~ 16 months. The average survival rate and reproductive viability of calves were 97.9 % and 81.74 %, respectively.