In order to discuss the influence of sodium humic acid added on feed for goat to the use of mineral element,60 adult guanzhong dairy goats were randomly divided into two groups,30 in each group.
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为了探讨山羊饲料中添加腐植酸钠对矿物元素利用的影响,将60只关中奶山羊成年母羊随机分成2组。
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