The high prices encouraged the peasants to improve their animal husbandry techniques; for example, they began feeding their animals indoors in order to raise the milk yield of their cows.
2
羟基蛋氨酸锌对奶牛的产奶量的影响。
The effect of Zinc hydroxymethionine on milk yields.
3
播放古典和轻松音乐可以增加奶牛的产奶量。
Playing classical and soothing music can increase the milk yield of dairy cows.
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