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在南部大平原的畜牧系统中用干蒸器的谷物取代肥料旧世界蓝色,美国

Brody D Wallis¹, Phillip A Gunter¹, Gerald W Horn¹

¹Department of Animal Science, Oklahoma State University, Stillwater, OK 74075, USA.

Animals : an open access journal from MDPI

|September 28, 2023

概括

与化肥相比,用干蒸机谷物补充牛可以提高性能和资源效率. 这为畜牧牛放牧系统提供了可行的经济替代方案.

科学领域:

动物科学动物科学
农业学是一种农业学.
环境科学环境科学

背景情况:

养殖牛的生产依赖于有效的料利用和资源管理.
施肥策略和替代料补充剂影响牛的表现和环境足迹.
干蒸器谷物 (DDGS) 为牛提供了潜在的营养来源.

研究的目的:

为了评估干蒸机谷物补充与肥对牛的表现的影响.
根据不同的管理策略,评估资源利用效率,包括和碳足迹.
为了比较DDGS补充的经济可行性与传统的受精方法.

主要方法:

在四个放牧季节中,对畜牧牛 (母牛和牛) 进行了四种治疗:低投入 (LOW),干蒸机谷物补充 (DDGS),肥 (NFERT) 和肥 (NPFERT).
使用线性模型分析了牛的表现和资源使用效率指标.
计算了每单位体重增加的碳等价排放量和碳足迹.

主要成果:

使用效率因处理和年份而异,LOW始终显示最高效率.
干蒸机谷物 (DDGS) 补充剂导致使用效率比NFERT和NPFERT在大多数年份更高.
虽然DDGS,NFERT和NPFERT的总碳排放量较高,但LOW和DDGS的碳足迹每公斤体重增加相比NFERT和NPFERT更低.

结论:

用干蒸机谷物 (DDGS) 取代化肥提高了牛的表现和资源使用效率.
在畜牧牛放牧系统中,DDGS补充是一种潜在的可行和经济的替代方案,而不是传统的受精策略.
优化料补充和施肥可以提高牛生产的可持续性.

关键词:

经济学经济学经济学温室气体排放量排放量温室气体排放量排放量用的使用效率效率.

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