保护的棕酸减轻了墨西哥高地放牧的霍尔斯坦牛的牛奶脂肪抑郁症

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概括

在食大豆油的哺乳母牛中补充受保护的棕酸 (PA) 改善了牛奶脂肪度和产量. 这种饮食策略增强了牛奶脂肪酸概况,增加了有益的cis-9,trans-11结合烯酸 (CLA).

科学领域:

动物科学动物科学
乳制品营养乳制品营养
动物的新陈代谢

背景情况:

结合烯酸 (CLA) 异构体具有多种作用; cis-9, trans-11 CLA 是有益的,而 trans-10, cis-12 CLA 减少牛奶脂肪.
乳牛的乳脂低落是乳制品行业的一个担忧,影响衍生品产量.

研究的目的:

评估受保护的棕酸 (PA) 补充剂对在接受大豆油的放牧哺乳荷尔斯坦奶牛的牛奶产量,脂肪度和牛奶脂肪抑制的影响.
评估PA和大豆油对牛奶脂肪酸概况的影响.

主要方法:

一项交叉设计研究,涉及9只多夫妇的荷尔斯坦牛,分为三个治疗组:对照组,大豆油和大豆油+PA.
奶牛在草和果园草的混合牧场上轮流放牧,接收缩物和料.
评估干物质摄入量,牛奶产量,牛奶蛋白,乳糖和牛奶脂肪的情况.

主要成果:

在处理过程中,干物质摄入量,牛奶产量或牛奶蛋白和乳糖含量之间没有显著差异.
补充PA增加了经脂肪校正的牛奶产量,产量和脂肪度.
补充PA改善了牛奶脂肪酸概况,增加了cis-9,trans-11 CLA和棕酸度.

结论:

仅仅补充大豆油并没有导致放牧奶牛的牛奶脂肪抑制.
将大豆油与受保护的棕酸结合起来,有效地提高了牛奶脂肪的产量和度.
这种饮食策略通过增加有益的脂肪酸,如cis-9,trans-11 CLA,来提高牛奶脂肪的质量.

关键词:

结合的烯酸是合的.cis-9 跨-11 跨-11 的情况.牛奶脂肪的减少牛奶脂肪的减少豆油是大豆油中的一种.转换-10 cis-12 的情况.

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