Abstract The objective of this experiment was to investigate the effects of supplementing colostrum and milk with a cottonseed protein hydrolysate (CSPH) as a peptide source on the performance, antioxidant status, blood hormones, and metabolites in calves. Fifty-six newborn Holstein calves were randomly assigned to one of four dietary treatments in a 2 × 2 factorial arrangement with different colostrum quality (good or poor) and CSPH addition to colostrum and milk (0 and 2 % fresh-matter basis) fed to calves from birth to 14 days of age. All the calves received equal amounts of colostrum and pasteurized waste milk, were weaned at d 56 of the experiment, and remained in the study until d 70 of the trial. The interaction between CSPH addition and colostrum quality was significant for starter intake and CSPH supplementation increased starter intake only in calves receiving the poor-quality (P = 0.03), but not in those received good-quality colostrum. Body weight and skeletal growth parameters were not affected by colostrum quality or CSPH supplementation. The calves receiving good-quality colostrum recorded lower ear disposition scores (P = 0.03) while those received the CSPH exhibited lower (P

中文翻译：

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添加到劣质或优质初乳和牛奶中的水解棉籽蛋白对荷斯坦奶牛的生产性能、健康和新陈代谢的影响

摘要 本实验的目的是研究用棉籽蛋白水解物 (CSPH) 作为肽源补充初乳和牛奶对犊牛生产性能、抗氧化状态、血液激素和代谢物的影响。56 头新生荷斯坦小牛被随机分配到 2 × 2 因子排列的四种日粮处理中的一种，初乳质量（好或差）和 CSPH 添加到初乳和牛奶（0% 和 2% 新鲜物质基础）喂养小牛从出生到 14 日龄。所有小牛都接受等量的初乳和巴氏杀菌废奶，在实验的第 56 天断奶，并留在研究中直到试验的第 70 天。添加 CSPH 和初乳质量之间的相互作用对于开食料的摄入量是显着的，并且 CSPH 补充剂仅在接受劣质初乳的犊牛中增加了开食料摄入量（P = 0.03），但在接受优质初乳的犊牛中没有。体重和骨骼生长参数不受初乳质量或 CSPH 补充的影响。接受优质初乳的小牛记录了较低的耳朵处置评分（P = 0.03），而接受 CSPH 的小牛表现出较低（P