摘要
利用扬州大学农牧场979头第1胎中国荷斯坦牛初配年龄及其繁殖性能数据,分析不同初配年龄对受胎情期数、产犊到受胎时间间隔、产犊间隔、妊娠期等指标的影响。结果表明:初配年龄显著影响受胎情期数和妊娠期长短(P<0.05),18月龄配种母牛受胎情期数和妊娠期均最低,初配年龄对产犊到受胎时间间隔和产犊间隔均无显著影响(P>0.05),但随着初配月龄的不断增加,奶牛产犊到受胎时间间隔和产犊间隔有逐渐降低的趋势。
The effects of the age of first mating on breedin index, the interval from calving to conception, cavling interval and gestation were analyzed using the data of reproductive records in first parity for 979 Chinese Holstein in Experimental Farm of Yangzhou University. The results showed that the age of first mating had significant effects on breedin index and gestation（P 〈0.05） and the cows mated firstly in 18 months had the lowest breedin index and gestation. The age of first mating had no significant effects on the interval from calving to conception and cavling interval（P 〉 0.05）, but with the increasing of the age of first mating, the interval from calving to conception and cavling interval show the tendency of decrease.
出处
《中国畜牧杂志》
CAS
北大核心
2010年第7期52-54,共3页
Chinese Journal of Animal Science
基金
国家高新技术研究发展计划(863)(2008AA10Z144)
江苏省高校自然科学基础研究项目(08KJB230005)
江苏省科技支撑计划项目(BE2008302-2)
江苏省农业三项工程项目[SX(2008)082]
关键词
初配年龄
繁殖性能
中国荷斯坦牛
age of first mating
reproductive performances
Chinese Holstein
