文献类型： 外文期刊
第一作者： Silva, L. H. P.
作者： Silva, L. H. P.;Zang, Y.;Ghelickhan, M.;Meyer, E. M.;Brito, A. F.;Geng, Y. C.
作者机构：
关键词： forage brassica; heat production; oxygen consumption
期刊名称：ENERGY AND PROTEIN METABOLISM AND NUTRITION
ISSN： 0071-2477
年卷期： 2019 年 138 卷
页码：
收录情况： SCI
摘要： Forage canola has a high nutritional value, good biomass production, and may reduce energy loss as methane. We aimed to evaluate heat production and physical activity of lactating dairy cows with access to canola pasture. Eighteen mid-lactating Jersey cows (12 multiparous and 6 primiparous) were used. Cows were blocked by parity and randomly assigned to 1 of 2 treatments: CTRL, cows fed indoors with no access to pasture; or CAN, cows fed in the barn during the day and grazing canola during the night. Physical activity and gas production were measured. CAN cows had reduced methane emission but also greater physical activity resulting in similar heat production than CRTL cows.
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关键词：fatty acid; methane; milk yield; starch
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关键词：essential amino acid; fibrous byproduct; ground corn; methane
