酵母和外源纤维解酶添加剂对羊羔性能和料效率的影响
Renata Fróes1, Leilson Bezerra2, José Missasse3
1Department of Animal Science, Federal Institute of Education, Science and Technology of Bahia, BR 420, Santa Inês, 45320-000, Bahia, Brazil.
Tropical animal health and production
|August 7, 2024
概括
酵母和纤维化酶通过增强纤维消化和功能来改善反动物的营养. 0.7酵母和0.3外源纤维解酶 (EFE) 的混合物优化了羊羔的营养利用和保留.
科学领域:
- 动物科学动物科学
- 类动物营养 类动物营养
- 消化系统生理学 消化系统生理学
背景情况:
- 体发酵对于反动物的营养至关重要,影响纤维消化能力和整体效率.
- 酵母 (Saccharomyces cerevisiae) 和外源纤维解酶 (EFE) 用作料添加剂,以调节功能.
- 优化酵母和EFE的组合可以提高牲畜饮食中的营养利用率.
研究的目的:
- 评估酵母,EFE及其混合物对圣伊内斯羔羊的表现,吞行为和血清代谢物的影响.
- 评估这些添加剂对羊的营养消化能力,平衡和皮pH值的影响.
- 确定酵母与EFE的最佳比例,以改善羊羔的营养和料效率.
主要方法:
- 两项实验与圣伊内斯羊羔进行,涉及五种饮食治疗:控制,酵母,EFE,0.7酵母 + 0.3 EFE,和0.7 EFE + 0.3酵母.
- 实验1 (81天) 评估了40只羊羔的表现,吞行为和血清代谢物.
- 实验2评估了在代谢中的25只羊羔的消化能力,平衡和小肠的pH值.
主要成果:
- 外源纤维解酶 (EFE) 补充剂增加了干物质 (DM) 和总可消化营养素 (TDN) 的摄入量.
- 0.7酵母 + 0.3 EFE混合物改善了进食和反的效率,保留和血清白蛋白水平.
- 吃酵母,0.7 EFE + 0.3 酵母或对照饮食的羊羔显示出最有效的料转化.
结论:
- 0.7酵母和0.3 EFE的混合物显著提高了羊羔的营养利用率,包括留和反效率.
- 单个EFE补充剂可以增加营养摄入量,而酵母或特定混合物可以提高料转化效率.
- 细菌酵母和EFE的组合提供了一个有前途的策略,可以优化反动物的营养,而不会对羔羊的表现产生负面影响.
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