萨能奶山羊乳体细胞数与乳汁成分变化的研究  

Study on the Milk Somatic Cell Count and the Changes of Milk Composition in Sanne-goat

作　　者：李卫娟 胡钟仁 刘琴 周亚平 李东江 杜文华 赵德宏 赵富 王莲梅 

机构地区：[1]云南省畜牧兽医科学院,云南昆明650224 [2]昆明市动物卫生监督所,云南昆明650200 [3]石林县畜牧兽医总站,云南石林652200

出　　处：《中国畜牧兽医》2013年第9期175-179,共5页China Animal Husbandry & Veterinary Medicine

基　　金：公益性行业科研专项--奶山羊产业技术研究与试验示范(201103038)

摘　　要：本研究采用DHI检测方法对云南高原饲养的萨能奶山羊进行体细胞数统计和相关分析,探讨奶山羊体细胞数对羊奶主要成分及含量的影响。结果表明,萨能奶山羊乳体细胞数与乳脂率呈正相关(P=0.141),与乳蛋白率呈极显著正相关(P<0.01),与乳糖含量呈极显著负相关(P<0.01),与总固形物含量呈显著正相关(P<0.05),与尿素氮含量呈极显著负相关(P<0.01)。乳汁体细胞数的增加对羊乳的品质产生很大影响,造成羊乳蛋白、脂肪含量和总固形物含量上升;乳糖和非蛋白氮含量降低。从多种因素考虑,6月份所测得的体细胞数和乳成分含量可作为萨能奶山羊乳品质质量标准的参考。In this study, in order to study the effect of the somatic cell count （SCC） on the main composition and content of goat milk, somatic cell were collected and analyzed of Sanne-goat by using DHI method, which could provide the reference for raw milk product quality evaluation. The results showed that the SCC had no significantly positively related with milk fat percentages （P=0.141）, and were significantly positively related with milk protein percentages （P〈0.01）. The content of lactose was significantly negatively related with SCC （P〈0.01）.The content of total solids was highly significantly positively related with SCC （P〈0.05）.The content of urea nitrogen was highly significantly negatively related with SCC （P〈0.01）. Rising of SCC could greatly affect the quality of goat milk, induce the increase of milk protein percentage, milk fat percentage and the content of total solids and the decrease of the contents of lactose and urea nitrogen. In summary, the somatic cell count and the portion of milk components in June could be used as reference to evaluate the quality of Sanne-goat milk.

关 键 词：萨能奶山羊 体细胞数 羊乳 品质 

分 类 号：S827.94[农业科学—畜牧学]