具体分以下两个部分：试验一开食料中粗蛋白质水平对犊牛生长、消化及瘤胃发育的影响。
Experiment 1 was designed to study the effect of protein levels in starter feeds on growth performance, digestive physiology and rumen development in weaned calves.
本试验旨在研究开食料中粗蛋白质水平对断奶犊牛瘤胃发酵、微生物酶活性及瘤胃发育的影响。
This trial was designed to study the effects of crude protein levels in starters on rumen fermentation, enzymes activity of rumen microorganisms and rumen development of weaned calves.
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