尼罗尔公牛的营养摄入量,生产和代谢参数以无料饮食养,使用棉花蛋糕作为纤维来源
Angelo Herbet Moreira Arcanjo1, Luís Carlos Vinhas Ítavo2, Camila Celeste Brandão Ferreira Ítavo3
1Empresa de Pesquisa Agropecuária de Minas Gerais, EPAMIG Oeste, Uberaba, Brazil.
Tropical animal health and production
|January 24, 2024
概括
棉花蛋糕作为纤维来源在内罗尔的年轻公牛牛.
科学领域:
- 动物营养和新陈代谢
- 动物生产系统
背景情况:
- 优化受限Nellore年轻公牛的营养摄入量和生产参数对于高效的牛肉生产至关重要.
- 评估传统料的替代纤维来源,如全植物玉米料 (WPCS),对于饮食配方至关重要.
研究的目的:
- 评估取代全植物玉米料 (WPCS) 以棉蛋糕 (CSC) 作为内罗尔年轻公牛食的主要纤维来源的影响.
- 评估这种饮食改变对营养摄入量,生产能力和代谢参数的影响.
主要方法:
- 一个完全随机的设计实验进行了两种饮食治疗:一个是WPCS,另一个是CSC作为唯一的粗来源 (300g/kg).
- 十二只Nellore年轻公牛被分配给每个治疗,有12次复制.
- 通过在0,15,30,60和112天后称重动物来监测生产性表现和营养摄入量.
主要成果:
- 与CSC养的动物相比,养WPCS的动物摄入干物质,有机物质,中性洗剂纤维和原蛋白的摄入量较高.
- 食CSC的动物呈现出更高的乙醇提取物摄入量,并在前15天显示出初始负增长 (总体重增加和平均每日增加) 和料效率,其次是补偿增长.
- 尽管最初出现了挫折,但CSC养的公牛在后期表现有所改善,在最后两个时期的总体重增加和平均每日增加方面超过了WPCS组;然而,CSC养的动物的血胆固醇和葡萄糖度较高.
结论:
- 在无料饮食中用棉蛋糕取代玉米料作为纤维来源,可以促进内罗尔年轻公牛的整体动物表现更好.
- 虽然CSC最初导致性能降低和代谢变化,但补偿性增长表明其作为有效纤维替代品的潜力,需要进一步调查代谢影响.
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