精密食和对孕母母生殖表现和矿物质状况的影响
J Heurtault1, L Galiot2, P Schlegel3
1Department of Animal Sciences, Laval University, Quebec G1V 1A6, Canada; Agroscope, Swine Research Group, 1725 Posieux, Switzerland.
Animal : an international journal of animal bioscience
|October 9, 2025
概括
孕母猪的精准养需要仔细控制与的比例,以最大限度地利用. 精密养策略中的供应不足可能导致分泌量增加和潜在的缺陷.
科学领域:
- 动物科学动物科学
- 营养生理学 营养生理学
- 猪生产 生产 猪生产
背景情况:
- 精准养策略旨在优化牲畜的营养利用.
- (P) 和 (Ca) 的需求对孕母猪至关重要.
- 之前的研究重点是氨基酸精密养,但母猪的P和Ca精密养仍未得到充分研究.
研究的目的:
- 评估P和Ca精准养策略对孕母母猪的影响.
- 为了比较这一策略与两个妊娠周期的恒定饮食P和Ca水平.
- 评估对酸盐状况和母猪表现的影响.
主要方法:
- 120头母猪被分为三个饮食组:加拿大 (CAN),欧洲 (EU) 和精密养 (PR) 在两个妊娠周期内.
- 通过24小时尿液采集和在特定妊娠点 (d30,d90,d110) 的血液分析来评估酸状况.
- 体重和背部脂肪厚度在整个孕期和断奶时都被测量.
主要成果:
- 与欧盟和CAN组相比,110日,精准养母猪 (PR) 的背部脂肪厚度较高.
- 尿液中的Ca分泌不受饮食治疗,妊娠阶段或周期的影响.
- 一个显著的相互作用 (治疗 × 阶段 × 周期) 影响了尿路P排泄和Ca:P比率,PR母猪在C2的d90时显示出更高的P排泄和潜在的Ca缺乏 (Ca:P比率<0.5)
结论:
- 在孕母猪中精确养P和Ca需要严格控制可消化的Ca:P比率.
- 在PR策略中,不足的Ca供应导致了增加的P损失和潜在的Ca缺乏.
- 跨越多个周期的长期监测对于验证精准养策略和确保商业猪生产中最佳P利用至关重要.
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