Influence of BHB concentration in blood on fatty acid content in the milk of high-yielding cows

被引：0
|
作者：
Nogalski, Zenon [1 ]
Pogorzelska-Przybylek, Paulina [1 ]
Sobczuk-Szul, Monika [1 ]
Mochol, Magdalena [1 ]
Nogalska, Anna [2 ]
机构：
[1] Univ Warmia & Mazury, Dept Cattle Breeding & Milk Evaluat, PL-10719 Olsztyn, Poland
[2] Univ Warmia & Mazury, Dept Agr Chem & Environm Protect, PL-10719 Olsztyn, Poland
来源：
MEDYCYNA WETERYNARYJNA-VETERINARY MEDICINE-SCIENCE AND PRACTICE | 2015年 / 71卷 / 08期
关键词：
cattle; beta-hydroxybutyric acid; conjugated linoleic acid; SUBCLINICAL KETOSIS; EARLY LACTATION; DAIRY HERDS; PROFILE;
D O I：
暂无
中图分类号：
S85 [动物医学（兽医学）];
学科分类号：
0906 ;
摘要：
The objective of this study was to determine the effect of increased concentration of BHBA in the blood in high-yielding cows on fatty acid concentrations in milk fat in first month of lactation. The milk fatty acid profiles of cows classified as healthy (n = 33) or as cows with increased concentration of BHBA (iBHBA) (n = 9) based on a blood plasma beta-hydroxybutyrate threshold concentration of 1.2 mmol/l were compared. The increased concentration of BHBA decreased milk yield (by 1176 kg on average in 305-days of lactation) had a negative effect on the milk fatty acid profile and the health benefits delivered by fatty acids. Increased concentration of BHBA contributed to a decrease in the conjugated linoleic acid (CLA) content of milk fat, a less desirable n-6/n-3 ratio, and an increase in the concentrations of unsaturated fatty acids, in particular oleic acid.
引用
收藏
页码：493 / 496
页数：4
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