酒精阳性乳奶牛血清和全乳钙、镁含量变化  

Changes of Ca and Mg in Blood Serum and Milk of Dairy Cows Suffered from Alcohol Positive Milk

作　　者：李静[1] 周岩[1] 刘德义[1] 陈会良[1] 商常发[1] 

机构地区：[1]安徽科技学院动物科学学院,安徽凤阳233100

出　　处：《吉林农业科学》2013年第2期70-72,共3页Journal of　Jilin Agricultural Sciences

基　　金：安徽省优秀青年人才基金项目(2010SQRL098);安徽省农业委员会科技基金(皖农科函[2009]221号);安徽科技学院重点建设课程项目(ZDKC1130);安徽科技学院重点学科基金项目(AKXK20101-2)

摘　　要：目的:为研究不同程度的酒精阳性乳患牛血清和乳中的钙、镁水平。方法:首先剔除加州乳房炎检测法阳性的奶牛,用68%的酒精全群检测酒精阳性乳,用72%的酒精测定68%的酒精阴性牛乳,再用75%的酒精测定72%的酒精阴性牛乳,在75%酒精阴性牛群(对照组)、阳性牛群,72%酒精阳性牛群和68%酒精阳性牛群各选择产奶量、胎次、年龄、泌乳期相近的奶牛6头。分别组成1、2、3、4组。连续3周对各组奶牛进行颈静脉采血,分离血清,采集鲜乳,测定血清和乳中钙、镁的含量。结果:酒精阳性乳患牛血清和乳中钙、镁含量增加。结论:酒精阳性乳患牛体内钙、镁代谢紊乱,过多的钙、镁中和酪蛋白微胶粒表面的电荷,导致酪蛋白稳定性下降,致使乳胶体聚集能力增强,易导致酒精阳性乳的形成。Purpose： To study the level of Ca and Mg in blood serum and milk of different extent of alcohol positive milk cow. Method： The CMT positive dairy cows were rejected. The alcohol-positive milk was tested using the 68% alcohol. Then, the 68% alcohol-positive milk was tested using 72% alcohol. After that, the 72% alcohol-positive milk was tested using 75% alcohol. The cows were divided into four groups： 75% alco- hol-negative （control）, 75% alcohol-positive, 72% alcohol-positive and 68% alcohol-positive. There were 6 cows in each group, which were similar in milk production, parity, age, the lactation period. During the following three weeks, the blood serums and the milks from the cows in each group were gathered and the content of Ca and Mg detected. Results： The contents of Ca and Mg in the blood serum and milk of cows suffered from alcohol positive milk were higher than those in the negative milk. Conclusion： The Ca and Mg metabolic disorder in alcohol positive milk, redundant Ca and Mg neutralize the electric charge of casein to stability low down of casein, this made aggregation reinforce, all of these can induce alcohol positive milk.

关 键 词：酒精阳性乳 钙 镁 奶牛 

分 类 号：S852[农业科学—基础兽医学]