Crop byproducts supplemented in livestock feeds reduced greenhouse gas emissions

文献类型： 外文期刊

第一作者： Wang, Kun

作者： Wang, Kun;Du, Chunmei;Guo, Xianfei;Xiong, Benhai;Yang, Liang;Wang, Kun;Wang, Kun;Zhao, Xin

作者机构：

关键词： Crop byproducts; Greenhouse gas emissions; Enteric methane emission; Livestock; Dairy cows

期刊名称：JOURNAL OF ENVIRONMENTAL MANAGEMENT （ 影响因子：8.7； 五年影响因子：8.4 ）

ISSN： 0301-4797

年卷期： 2024 年 355 卷

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收录情况： SCI

摘要： Crop byproducts can be supplemented in livestock feeds to improve the utilization of resources and reduce greenhouse gas (GHG) emissions. We explored the mitigation potential of GHG emissions by supplementing crop byproducts in feeds based on a typical intensive dairy farm in China. Results showed that GHG emissions associated with production of forage were significantly decreased by 25.60 % when no GHG emissions were allocated to crop byproducts, and enteric methane emission was significantly decreased by 13.46 % on the basis of CO2 eq, g/kg fat and protein corrected milk. The supplementation did not affect lactation performance, rumen microbiota and microbial enzymes at the gene level. Metabolomics analysis revealed changes in amino acid catabolism of rumen fluid, which were probably responsible for more propionate production. In conclusion, supplementing crop byproducts in feeds can be a potential strategy to reduce GHG emissions of livestock.

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