在被养为低蛋白饮食,并补充了食核酸的断奶猪中的反应
Abiola S Lawal1, Tobi Z Ogunribido1, Yuechi Fu1
1Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA.
Translational animal science
|October 24, 2024
概括
用核酸补充低蛋白饮食改善了小猪的生长和营养利用. 核酸减少了断奶后的腹,并提高了类似胰岛素的生长因子-1水平,减轻了低蛋白饮食的负面影响.
科学领域:
- 动物营养 动物营养
- 猪生理学 猪生理学
- 营养生物化学 营养生物化学
背景情况:
- 已知核酸补充剂可以增强肠道发育,免疫功能和细胞生长.
- 断奶对小猪来说是一个压力很大的事件,可能会增加核酸需求.
- 低蛋白质 (LP) 饮食可能会损害小猪的表现,需要制定改善营养利用的策略.
研究的目的:
- 评估LP饮食中食核酸补充剂对小猪生长性能的影响.
- 评估对断奶后腹 (PWD) 发病率和营养消化能力的影响.
- 为了确定血液代谢物的变化,包括胰岛素样生长因子-1 (IGF-1).
主要方法:
- 210只小猪被奶和食不同程度的原蛋白 (CP) 含量 (24%或16%) 和核酸补充剂 (0,1,3或9g/kg).
- 在35天内监测成长性能 (料摄入量,体重增加).
- 收集了便和血液样本,分别分析营养消化能力和血清代谢物.
主要成果:
- 与阳性对照 (PC) 相比,低蛋白 (LP) 饮食降低了平均每日增益 (ADG) 和增加了断奶后腹 (PWD) 的发生率.
- 在LP饮食中补充核酸改善了ADG,与PC相比,并显著降低了血液尿素 (BUN).
- 较高的核酸水平 (9g/kg) 降低了PWD发生率,增加了的消化能力,并线性地提高了血清IGF-1度.
结论:
- 食核酸补充剂可以部分缓解LP饮食对小猪生长表现的负面影响.
- 核酸增强利用率,减少PWD,提供一个可行的策略,以改善仔猪的健康和性能断奶后.
- 这项研究强调了核酸补充剂改善肠道健康和新陈代谢状况的好处,这些好处在于,在被养LP饮食的断奶小猪身上.
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