Influence of mastitis on D-amino acid content of milk

被引：40
作者：
Csapo, J
CsapoKiss, Z
Stefler, J
Martin, TG
Nemethy, S
机构：
[1] PURDUE UNIV, DEPT ANIM SCI, W LAFAYETTE, IN 47907 USA
[2] GOTHENBURG UNIV, DEPT MARINE GEOL, GOTHENBURG, SWEDEN
来源：
JOURNAL OF DAIRY SCIENCE | 1995年 / 78卷 / 11期
基金：
匈牙利科学研究基金会;
关键词：
free amino acids; D-amino acids; mastitis; milk;
D O I：
10.3168/jds.S0022-0302(95)76865-5
中图分类号：
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号：
0905 ;
摘要：
The California Mastitis Test was used as an indicator of mastitis in this study. Five cows were chosen for each of the five test scores (from 0 = healthy to 4 = severe mastitis). Milk samples were analyzed for free AA and free D-AA. The contents of free AA, free D-AA, and the ratio of free D-AA to free AA increased significantly as the California Mastitis Test score increased. The free D-AA content of foremilk (first milk jets) from healthy cows (test score = 0) was approximately five times that in samples drawn later from the same udders. Contents of free AA and free D-AA were highly associated with test score and udder inflammation. Very low concentrations of free D-AA are normal for raw milk. Higher concentrations of free D-AA could be attributed to inclusion of foremilk and milk from cows having subclinical mastitis in the bulk tank milk.
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收藏
页码：2375 / 2381
页数：7
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