Methane emissions from indigenous nitrogen-efficient bovidae are overestimated

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dc.contributor.authorSamuels, Igshaan
dc.contributor.authorMa, Zhiyuan
dc.contributor.authorMi, Jiandui
dc.date.accessioned2026-01-12T09:24:08Z
dc.date.available2026-01-12T09:24:08Z
dc.date.issued2025
dc.description.abstractLivestock are vital for global food security, but are a significant source of methane, a greenhouse gas. Breeding for highly efficient nitrogen utilization and lower emissions is therefore a key goal for sustainable agriculture. Here we compared these traits across wild, indigenous, crossbred, and improved bovines via an extensive meta-analysis, supplemented with measurements of 150 yaks. Our results revealed that indigenous bovine produce less methane and have lower urinary nitrogen loss than improved breeds, indicating superior feed conversion and nitrogen efficiency. Notably, crossbreeds also produce significantly less methane, revealing a hybrid advantage for sustainable breeding. Furthermore, our direct measurements showed that methane emissions from yaks were 39% lower than predicted by Intergovernmental Panel on Climate Change Tier2 models, a pattern of overestimation also evident in other indigenous bovines. These findings reveal that well-adapted indigenous breeds are crucial genetic resources, highlighting the need for breed-specific data to guide global mitigation efforts. (Figure presented.)
dc.identifier.citationShi, F., Ma, Z., Mi, J., Yang, X., Jing, X., Yang, X., He, Q., Li, Z., Pinares-Patino, C.S., Samuels, I. and Li, X., 2025. Methane emissions from indigenous nitrogen-efficient bovidae are overestimated. Communications Earth & Environment, 6(1), p.786.
dc.identifier.urihttps://doi.org/10.1038/s43247-025-02755-7
dc.identifier.urihttps://hdl.handle.net/10566/21638
dc.language.isoen
dc.publisherNature Publishing Group
dc.subjectalternative agriculture
dc.subjectclimate change
dc.subjectfood security
dc.subjectindigenous population
dc.subjectmethane
dc.titleMethane emissions from indigenous nitrogen-efficient bovidae are overestimated
dc.typeArticle

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