在奶牛日粮中添加过瘤胃脂肪是解决高产奶牛能量负平衡问题重要而经济可行的途径。
Adding rumen bypass fat into the diets for high producing dairy cows is an important, economic and feasible way to resolve the problem of energy negative balance of high producing dairy cows.
本试验研究不同的日粮电解质平衡值（dEB值）对银香麻鸡生产性能和血液理化指标的影响。
Proper value of dietary electrolyte balance(DEB)is benefical for improving nutrient utilization, performance and to maintain animal health.
本文旨在评价使用CPM模型改善日粮能氮平衡和提高奶牛生产性能的效果。
The objective of this study was to evaluate CPM model in terms of improvement in performance of lactating cows by balancing dietary energy and protein.
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