全棉种子作为一种有效的策略,以减轻牛低质量料中的肠道甲排放
Olegario Hernández1,2, Agustín López1,2,3, Maria Esperanza Ceron-Cucchi3,4,5
1Estación Experimental Agropecuaria Santiago del Estero, Instituto Nacional de Tecnología Agropecuaria (INTA), Jujuy 850, Santiago del Estero 4200, Argentina.
Animals : an open access journal from MDPI
|March 28, 2025
概括
用全棉种子 (WCS) 补充牛肉公牛,显著降低了肠道甲排放,并改善了体重增加. 这种饮食策略通过降低温室气体排放来提高肉牛生产系统的可持续性.
科学领域:
- 动物科学动物科学
- 类动物营养 类动物营养
- 环境科学 环境科学
背景情况:
- 肉牛的肠道甲 (CH4) 排放有助于温室气体的产生.
- 低质量的料饮食可以限制动物的表现和营养价值.
- 减轻甲排放和改善肉牛生产的战略对于可持续性至关重要.
研究的目的:
- 评估全棉种子 (WCS) 补充对肠道甲排放,干物摄入量 (DMI) 和牛肉公牛的表现的影响.
- 评估WCS作为料补充剂的有效性,以提高肉牛生产系统的可持续性.
主要方法:
- 24只布拉福德公牛被养为仅含几内亚草的饮食或补充WCS的几内亚草 (体重的0.5%).
- 在两个实验期内,使用SF6标记器技术量化了肠道甲排放量.
- 在整个研究过程中,对干物质摄入量和动物表现 (体重增加) 进行了监测.
主要成果:
- 与对照组相比,补充WCS的母牛的每日CH4排放量减少了29%,CH4产量减少了22%.
- 在被WCS养的母牛中,甲强度降低了33%.
- 虽然WCS补充剂降低了总体和料DMI,但它显著改善了平均每日增益 (0.28公斤/天 vs. -0.10公斤/天).
结论:
- 全棉种子补充剂有效地减轻了低质量的料养的牛犊肠道甲排放.
- 补充WCS可以改善体重增加,提供减少环境影响和提高动物表现的双重好处.
- 该战略为提高肉牛生产系统的可持续性提供了一个有希望的方法.
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