The impact of prepartum energy intake on colostrum quality and calf performance

产前能量摄入对初乳质量和犊牛生产性能的影响

• 批准号: 561532-2021
• 负责人: Steele, Michael
• 金额: $ 18.98万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=722033
• 关键词: impact; prepartum; energy; intake; colostrum

The Canadian beef industry generates more than $9.4 billion in cash receipts and contributes $18 billion to gross domestic product per year. For cow-calf producers, reducing calf morbidity and mortality can improve returns and increase production efficiencies. Improper nutritional management of the dam during the prepartum period influences prenatal development, as well as colostrum quality, which may have a large impact on calf health and performance. Colostrum, the first secretion produced after calving, contains a wide array of bioactive molecules that have unrealized potential to promote optimal gut function and development in young calves. Therefore, the goal of this partnership is to determine how beef cow energy intake in late gestation impacts the metabolism of the cow, colostrum quality and the performance of offspring. In addition to performing a large animal based study assessing how beef cows and calves respond to the prepartum diet, this project will also include an in depth analysis of the bioactives in colostrum and how they are absorbed by the calf intestine. These studies are expected to develop novel feeding strategies for beef cows and calves to improve beef cow and calf health and productivity, and ultimately improve the sustainability of the Canadian beef industry.

加拿大牛肉产业每年产生超过94亿美元的现金收入，为国内生产总值贡献180亿美元。对小牛生产者来说，降低小牛发病率和死亡率可以提高回报和提高生产效率。犊牛准备期营养管理不当会影响犊牛的产前发育和初乳质量，对犊牛的健康和生产性能产生重大影响。初乳是犊牛后产生的第一种分泌物，含有多种生物活性分子，这些分子在促进犊牛肠道功能和发育方面具有尚未实现的潜力。因此，此次合作的目标是确定妊娠后期肉牛能量摄入对奶牛代谢、初乳品质和后代生产性能的影响。除了进行一项大型动物研究，评估肉牛和犊牛对预备日粮的反应外，该项目还将深入分析初乳中的生物活性以及它们如何被犊牛肠道吸收。这些研究有望为肉牛和小牛开发新的喂养策略，以改善肉牛和小牛的健康和生产力，并最终提高加拿大牛肉产业的可持续性。