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作为一个效率指标的残留料摄入量为预奶奶牛犊:我们知道什么?

Camila S da Silva¹, Juliana M Leão², Camila F A Lage³

¹Brazilian Agricultural Research Corporation, Embrapa Dairy Cattle, Juiz de Fora 36038-330, Minas Gerais, Brazil.

Life (Basel, Switzerland)

|August 26, 2023

概括

提高奶牛的料效率是关键. 本综述探讨了断奶前小牛的剩余料摄入量 (RFI),强调其与新陈代谢的联系以及早期选择以提高农场利能力的潜力.

科学领域:

动物科学动物科学
营养生理学营养生理学
动物的新陈代谢

背景情况:

料效率对于乳牛生产至关重要,通常用于选择的剩余料摄入量 (RFI).
现有的RFI研究主要集中在哺乳奶牛上,忽视了断奶前料效率对农场经济和未来生产力的重大影响.
牛犊的早期料效率对于农场的整体利能力和牛的长期表现至关重要.

研究的目的:

审查当前关于残留料摄入量 (RFI) 在断奶前乳牛犊的分歧的知识.
探索RFI和年轻乳牛犊的营养代谢之间的关系.
讨论在断奶前的小牛中评估RFI的优点,局限性和未来的研究需求.

主要方法:

文献综述综合了现有的关于在断奶前乳牛犊中RFI的研究.
对研究营养利用,能量和蛋白质代谢,维生素代谢,肠道发育和后肠微生物群与RFI相关的研究进行分析.
评估目前在断奶前阶段评估RFI的技术及其适应性.

主要成果:

营养利用,能量和蛋白质代谢,维生素代谢,肠道发育和后肠细菌种群都与断奶前小牛的RFI分歧有关.
目前用于评估断奶前小牛的RFI的方法仍在开发中,需要进行调整.
在了解牛的早期料效率差异方面存在重大差距.

结论:

断奶前小牛的剩余料摄入量 (RFI) 差异受各种代谢和生理因素的影响.
进一步的研究是必不可少的,以完善RFI评价技术,为断奶前乳牛犊.
在断奶前阶段选择高效率的小牛显示了加速乳牛遗传进步的巨大潜力.

关键词:

效率测试效率测试效率测试效率测试高效率的高效率的高效率.低效率的低效率的低效率的低效率.年轻牛的年轻牛.

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