The results indicate that problems of calcium deficiency and unbalance of values of serum calcium to phosphorus (ca: p) in growing Yak.

结果表明：犊牦牛在生长发育期普遍存在缺钙和血清钙与无机磷比例失调的问题。

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Possible causes include deficiency of vitamin D (needed to absorb calcium and phosphorus from the intestine), renal disorders, liver disease, and certain intestinal disorders.

可能的原因包括：缺乏维生素D（需要吸收钙和磷、肾疾病大肠）、肝脏疾病，和一定的肠道疾病。

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