The effects of different levels of additive soy phosphatide in the diet of early lactation cows with northeast hay and corn silage as roughage on their performance were studied.
以羊草和青贮玉米为粗饲料，对奶牛饲粮添加不同水平大豆磷脂的饲喂效果进行研究。
The effects of different levels of additive soy phosphatide in the diet of early lactation cows with northeast hay and corn silage as roughage on their performance were studied.
以羊草和青贮玉米为粗饲料，对奶牛饲粮添加不同水平大豆磷脂的饲喂效果进行研究。
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