Effects of feeding graded levels of camelina expeller meal up to 10% of dietary dry matter on production and milk fatty acid profiles in dairy cows

IF 1.2 4区 农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE Canadian Journal of Animal Science Pub Date : 2022-12-01 DOI:10.1139/cjas-2022-0027
T. Mutsvangwa, S. Abeysekara, Sean Thompson
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Abstract

Abstract Eight Holstein cows were used in a replicated 4 × 4 Latin square design study to determine the effects of partially replacing canola meal (CM) with 5%, 7.5%, and 10% camelina expeller meal (CEM) on production and milk fatty acid profiles. Replacing CM with CEM did not affect feed intake and milk yield, but milk contents of fat and protein decreased linearly. Feeding increasing amounts of CEM linearly increased milk contents of C18:2n6, C18:3n3, cis-9, trans-11 CLA, trans-10, cis-12 CLA, and total CLA. CEM can be fed up to 10% of dietary DM without negatively affecting production and can increase milk contents of omega-3 fatty acids.
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饲粮干物质水平为10%的亚麻荠粕分级饲喂对奶牛产量和乳脂肪酸分布的影响
摘要在一项重复的4×4拉丁方设计研究中,使用8头荷斯坦奶牛,以确定用5%、7.5%和10%的camelina expeller粉(CEM)部分替代油菜籽粉(CM)对产量和牛奶脂肪酸含量的影响。用CEM代替CM不影响采食量和产奶量,但牛奶中脂肪和蛋白质含量呈线性下降。喂养量增加的CEM线性增加了C18:2n6、C18:3n3、顺式-9、反式-11 CLA、反式-10、顺式-12 CLA和总CLA的乳汁含量。CEM可以喂养高达10%的膳食DM,而不会对生产产生负面影响,并可以增加牛奶中ω-3脂肪酸的含量。
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来源期刊
Canadian Journal of Animal Science
Canadian Journal of Animal Science 农林科学-奶制品与动物科学
CiteScore
2.30
自引率
0.00%
发文量
51
审稿时长
6 months
期刊介绍: Published since 1957, this quarterly journal contains new research on all aspects of animal agriculture and animal products, including breeding and genetics; cellular and molecular biology; growth and development; meat science; modelling animal systems; physiology and endocrinology; ruminant nutrition; non-ruminant nutrition; and welfare, behaviour, and management. It also publishes reviews, letters to the editor, abstracts of technical papers presented at the annual meeting of the Canadian Society of Animal Science, and occasionally conference proceedings.
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