阿尔帕卡 (Vicugna pacos) 中不同纤维含量的四份食物的摄入量和消化能力
Ana B Obregón-Cruz1, Carlos A Gómez2, Cesar M Osorio3
1Universidad Nacional Agraria La Molina, Av. La Molina S/N, La Molina, Lima, Perú. abobregonc@gmail.com.
Tropical animal health and production
|October 1, 2024
概括
低纤维饮食增加了阿尔帕卡的料摄入量和营养素消化能力. 便原蛋白可以预测有机物质的消化能力,为南美驼的饮食质量提供了洞察力.
科学领域:
- 动物营养 动物营养
- 消化系统生理学 消化系统生理学
背景情况:
- 食纤维显著影响牲畜的料摄入量和营养利用.
- 了解南美驼动物 (如阿尔帕卡) 的这些影响对于优化它们的营养至关重要.
研究的目的:
- 为了评估中性清洁剂纤维 (NDF) 水平的变化对阿尔帕卡料摄入量和明显消化能力的影响.
- 建立一种使用便原蛋白 (CP) 含量估计有机物消化率 (OMD) 的方法.
主要方法:
- 十二只阿尔帕卡在一个反向设计中接受了四种不同的NDF水平 (40.3%至72%) 的饮食治疗.
- 测量了自愿的料摄入量,水摄入量和营养物质消化能力 (干物质,有机物质,CP,NDF).
- 开发了一个回归方程,以从便CP度中预测OMD.
主要成果:
- 与较高的NDF饮食相比,被养最低NDF饮食 (T1: 40.3%) 的阿尔帕卡的干物摄入量 (DMI) 和水摄入量显著增加.
- 干物质,有机物质和CP的消化能力在T1组显著更高.
- 在不同治疗方法中,NDF消化率没有显著差异,而便CP显示出预测OMD的潜力.
结论:
- 饮食中的NDF水平极大地影响料摄入量和营养消化能力,较低的NDF通常促进更好的利用.
- 便原蛋白度为估计有机物消化能力和评估南美驼的饮食质量提供了一种可行的,非侵入性的方法.
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