摘要
荷斯坦牛和娟珊牛作为目前分布广泛的主要奶牛品种,其泌乳性能各有优势。为了比较二者泌乳性能的差异,收集了江苏某大型牧场2015年9月至2016年12月间共25489条DHI记录,用多因素方差法分析不同胎次、泌乳阶段和产犊季节娟珊牛与荷斯坦牛泌乳性能的差异。结果表明:娟珊牛与荷斯坦牛泌乳性状之间存在极显著差异,娟珊牛乳脂率和蛋白率极显著高于荷斯坦牛,而荷斯坦牛产奶量相关性状(日产奶量、校正奶量、高峰奶量、305天奶量以及成年当量)极显著高于娟珊牛(P<0.01)。不同胎次、泌乳阶段和产犊季节娟珊牛和荷斯坦牛的泌乳性能比较结果总体上也符合上述趋势,但头胎娟珊牛校正奶量极显著高于头胎荷斯坦牛(P<0.01),三胎娟珊牛的高峰日极显著大于荷斯坦牛(P<0.01)。该结果表明娟珊牛和荷斯坦牛泌乳性能各有优势。
As the widely distributed main dairy cattle breeds,Jersey and Holstein have their own advantages in lactation performance.This study collected 25489 DHI production records from a big dairy farm in Jiangsu province from September 2015 to December 2016,and then Multivariate analysis of variance was used to analyze the differences between Jersey and Holstein lactation performances for different parity,lactation stage and calving season.The results showed that:there were some significant differences between the Jersey and Holstein lactation performance,Jersey had significantly higher fat content and protein content than Holstein,and the traits about milk yield(test-day milk yield,corrected milk,peak milk yield,peak day,305-day milk yield and adult equivalent)of Holstein were significantly higher than Jersey(P<0.01).The comparison results between Jersey and Holstein lactation performance of different parity,lactation stage and calving season had the similar tendency.The difference was that the corrected milk quantity of the first born Jersey was significantly higher than that of Holstein,and the peak day of the third pregnant Jersey was significantly higher than that of the Holstein.The results show that both the Jersey and Holstein have their own advantages of lactation performance,which can provide a reference for the optimization breeding of dairy cattle and the selection of livestock breeds.
作者
王梦琦
倪炜
唐程
郭佳禾
张慧敏
李明勋
冀德君
杨章平
毛永江
WANG Mengqi;NI Wei;TANG Cheng;GUO Jiahe;ZHANG Huimin;LI Mingxun;JI Dejun;YANG Zhangping;MAO Yongjiang(College of Animal Science and Technology,Yangzhou University,Yangzhou,Jiangsu 225009,China)
出处
《家畜生态学报》
北大核心
2018年第7期37-41,共5页
Journal of Domestic Animal Ecology
基金
江苏省农业自主创新基金(CX(17)1005)
国家自然科学基金项目(31372286)
江苏省企业研究生工作站
关键词
娟珊牛
荷斯坦牛
泌乳性状
Jersey
Holstein
lactation performance
