Determinants of amino acid requirements of sows

母猪氨基酸需要量的决定因素

• 批准号: 452536-2013
• 负责人: DeLange, Cornelis
• 金额: $ 5.14万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=554897
• 关键词: Determinants; amino; acid; requirements; sows

Sow nutrition is an important aspect of sustainable pork production, which is a delicate balance between optimal production (i.e., balance feed costs with sow reproductive performance) and environmental impacts (i.e., minimize nutrient excretion). Mathematical models are used increasingly for factorial estimation of nutrient requirements of swine across a broad spectrum of production potentials, physiological states and environmental conditions, and for individual sow units. Furthermore, to minimize environmental contamination from excessive nitrogen excretion, reduced dietary protein diets are recommended by more closely matching dietary amino acid supply with requirements. There is a severe lack of data needed for development and validation of factorial-derived amino acid and energy requirements of sows throughout the reproductive cycle.

母猪营养是可持续猪肉生产的一个重要方面，这是最佳生产（即平衡饲料成本与母猪繁殖性能）和环境影响（即最大限度地减少养分排泄）之间的微妙平衡。数学模型越来越多地用于对猪的各种生产潜力、生理状态和环境条件以及单个母猪单位的营养需求进行因子估计。此外，为了最大限度地减少过量氮排泄造成的环境污染，建议通过更紧密地匹配膳食氨基酸供应与需求来减少膳食蛋白质饮食。 开发和验证母猪整个繁殖周期的因子衍生氨基酸和能量需求所需的数据严重缺乏。