azacosterol
二者都能够维持奶牛血清T3、T4、COR、PRL水平的基本恒定； 均显著降低了尿素氮和胆固醇水平（P<0.05）。
The serum levels of T3, T4, COR, PRL could be kept stable and the serum urea nitrogen, cholesterol were decreased significantly(p<0.05)in NG and CNG.
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