{"title":"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","authors":"T. Mutsvangwa, S. Abeysekara, Sean Thompson","doi":"10.1139/cjas-2022-0027","DOIUrl":null,"url":null,"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.","PeriodicalId":9512,"journal":{"name":"Canadian Journal of Animal Science","volume":"103 1","pages":"101 - 106"},"PeriodicalIF":1.2000,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"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\",\"authors\":\"T. Mutsvangwa, S. Abeysekara, Sean Thompson\",\"doi\":\"10.1139/cjas-2022-0027\",\"DOIUrl\":null,\"url\":null,\"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.\",\"PeriodicalId\":9512,\"journal\":{\"name\":\"Canadian Journal of Animal Science\",\"volume\":\"103 1\",\"pages\":\"101 - 106\"},\"PeriodicalIF\":1.2000,\"publicationDate\":\"2022-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Canadian Journal of Animal Science\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://doi.org/10.1139/cjas-2022-0027\",\"RegionNum\":4,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"AGRICULTURE, DAIRY & ANIMAL SCIENCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Canadian Journal of Animal Science","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1139/cjas-2022-0027","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"AGRICULTURE, DAIRY & ANIMAL SCIENCE","Score":null,"Total":0}
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
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.
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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