大豆油,酸来源,在羊羔饮食中:摄入量,消化能力,性能,消化行为和血液代谢物
Victor G O Lima1, Liliane O da Silva1, José E de Freitas Júnior1
1Department of Animal Science, Universidade Federal da Bahia, Av. Adhemar de Barros, 500, Ondina, Salvador 40170110, Brazil.
Animals : an open access journal from MDPI
|July 27, 2024
概括
将大豆油 (SO) 添加到料羊的食中,减少了干物质的摄入量,但提高了营养物质的消化能力. 建议肥羊羔最多含有41g/kg的SO,以平衡能量密度和性能.
科学领域:
- 动物科学动物科学
- 营养生物化学 营养生物化学
- 动物生理学 动物生理学
背景情况:
- 饮食脂肪补充剂,特别是大豆油 (SO),正在探索,以提高养羊的能量密度.
- 了解增加SO度对营养利用和代谢反应的影响对于优化羊羔生长至关重要.
研究的目的:
- 评估不同含大豆油含量水平对养行为,营养消化能力,性能和养羊羔血液代谢物的影响.
- 根据生产参数,确定肥羔羊中豆油含量的最佳水平.
主要方法:
- 在40天的时间里,40只圣伊内斯羊羔被食了0,30,60,90或120g/kg干物质 (DM) 的大豆油.
- 测量包括干物质摄入量,营养物质消化能力,平均每日增加,养行为和血液N-尿素度.
主要成果:
- 加入大豆油线性降低了DM摄入量,原蛋白,非纤维碳水化合物和总消化的营养素.
- 原蛋白,提取物和NDFom的明显消化能力与SO增加,而NFC的消化能力下降.
- 随着SO的加入,平均每日养量下降,尽管养时间增加,反效率下降. 血液中N-尿素度降低了.
结论:
- 豆油可以包括在养羊的饮食中,最优的水平是建议高达41g/kg的DM.
- 饮食适应策略减轻了负面的脂质影响,但高能量密度限制了表现.
- 需要在高脂肪饮食中进一步研究能量代谢和小肠功能.
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