降低日粮蛋白质含量和添加瘤胃保护Lys对高产奶牛生产性能的影响
강저일량단백질함량화첨가류위보호Lys대고산내우생산성능적영향
Effect of reducing dietary crude protein content and supplementing rumen protected lysine on performance of high producing dairy cows during heat stress
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