牦牛分娩前后乳腺分泌物的生化组成特点  

Biochemical Composition of Mammary Gland Secretions Prior to Parturition in Yak

作　　者：金素钰[1] 郑玉才[1] 刘文静[1] 

机构地区：[1]西南民族大学生命科学与技术学院,成都610041

出　　处：《湖北农业科学》2006年第3期355-357,共3页Hubei Agricultural Sciences

基　　金：国家自然科学基金项目(39870607)

摘　　要：分析了麦洼牦牛分娩前后乳腺分泌物的生化组成,并与常乳进行了比较。牦牛分娩前乳腺分泌物中含有丰富的IgG;-γGT、NAGase、AKP等的活力一般显著高于初乳和常乳,而LP活力、乳糖含量和CN比例低于常乳。分娩前12d～1d的样品中均检测到显著量的-βLG,而-αLA含量很低。Biochemical composition of mammary gland secretions of Maiwa yak during the periparturient period was assayed. The secretions prior to parturition contained high concentration of IgG, and activities of γ-glutaml transpeptidase, N-acetyl- β-D-glucosaminidase and alkaline phosphatase were higher than that in colostrum and milk. However, activity of lactoperoxidase, lactose content and casein percentage were significantly lower than that in yak milk. Significant β- lactoglobulin was detected in secretions 12 d to 1 d prior to parturition and α-lactalbumin percentage was relatively low.

关 键 词：牦牛 初乳 分娩 免疫球蛋白G 酶 

分 类 号：S823.85[农业科学—畜牧学]