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头胎与经产奶牛围产期生产性能和血清生化指标的比较 预览

Comparison of Productive Performance and Serum Biochemical Indices of Primiparous and Multiparous Dairy Cows During the Perinatal Period
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摘要 为比较头胎奶牛与经产奶牛在围产阶段生产性能和血清生化指标的差异,本研究选取临床健康的头胎和经产奶牛各10头,在同等条件下饲喂全混合日粮,于预产期前7、4、2、1d及产后0、1、2、4、7、14d晨喂前尾静脉采血并分离血清,测定血糖、甘油三酯和血钙浓度,产后11~40d记录产奶量,于产后第30天采集乳样,测定乳成分和体细胞数。结果显示,头胎奶牛与经产奶牛血清甘油三酯、乳脂、乳蛋白、乳糖和乳干物质等指标均无显著差异(P〉0.05);经产牛产后日均产奶量和乳体细胞数均显著高于头胎牛(P〈0.05);在分娩前第4天和分娩后第2、4天时,头胎牛血糖浓度显著高于经产牛(P〈0.05),但在分娩时,头胎牛血糖浓度显著低于经产牛(P〈0.05);头胎牛在产前第1、2天、分娩当天及产后第2天的血钙水平显著高于经产牛(P〈0.05)。 In order to study the differences of productive performances and serum biochemical indices between primiparous and mulitiparous dairy cows during the perinatal period,ten primiparous and ten multiparous healthy dairy cows were selected and were fed the same total mixed ration.Blood samples were collected from the caudal vein before the morning feeding on-7,-4,-2,-1,0,1,2,4,7and 14 dafter parturition,and serum glucose,triglyceride and calcium concentrations were determined.Milk yields were recorded every day from 11 to 40days after parturition.Milk samples were collected from each experimental cow on 30 th day after parturition and milk compositions and somatic cell counts were determined.The results indicated that no significant difference was observed in serum triglyceride,milk fat,milk protein,milk lactose and milk dry matter between primiparous and multiparous dairy cows(P〈0.05).Mutiparous cows had greater daily milk yield and higher milk somatic cell count than primiparous cows(P〈0.05).Primiparous cows had significant higher serum glucose level on-4,2and 4dafter parturition(P〈0.05),but significant lower serum glucose level on calving date(P〈0.05)when compared with multiparous cows.Higher serum calcium concentrations were found on-2,-1and 2dafter parturition in primiparous cows than multiparous cows(P〈0.05).
作者 张凡建 乔立东 孙健 侯引绪 王九峰 ZHANG Fan-jian1 , QIAO Li-dong1 , SUN Jian1 , HOU Yin-xu1 , WANG Jiu-feng2 (1. Beij ing Vocational College of Agriculture, Beijing 102442, China ; 2. College of Veterinary Medicine, China Agricultural University, Beijing 100193, China)
出处 《中国畜牧兽医》 北大核心 2017年第8期2529-2532,共4页 China Animal Husbandry & Veterinary Medicine
基金 北京市自然科学基金项目(6152005) 北京市自然科学基金项目(6163027) 北京农业职业学院院级科研项目(XY-YF-16-43) 现代农业产业技术体系北京奶牛创新团队项目
关键词 头胎奶牛 经产奶牛 围产期 生产性能 血清生化 primiparous dairy cow multiparous dairy cow perinatal period productive performance serum biochemical indices
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