Zinc methionine (Zn-Met) with levels of 0 (group Ⅰ ), 15 (group Ⅱ ), 30 (group Ⅲ ), 45 (group Ⅳ), 60 (group Ⅴ ), 75 mg/kg (group Ⅵ ) and zinc sulfate with the level of 60 mg/kg (group Ⅶ) respectively, were used to evaluate the effects of different zinc levels in male mink in the growing period. The results showed that dry matter digestibility, protein digestibility, fat digestibility in group Ⅳ were significantly higher than that in other groups (P＜0. 05); minks in different groups had no significant difference in feed intake, dry matter intake, nitrogen intake, urine nitrogen, nitrogen retention, net protein utilization, net protein utilization and biological value of protein (P＞0.05).%本试验主要研究了不同锌源及锌水平对生长期雌性水貂营养物质消化率及氮代谢的影响.本试验采用单因子试验设计,每组12个重复,每个重复1只,Ⅰ-Ⅵ组水貂基础日粮中蛋氨酸螯合锌添加量(以锌元素计)分别为0(Ⅰ组)、15(Ⅱ组)、30(Ⅲ组)、45(Ⅳ组)、60(V组)、75 mg/kg(Ⅵ组)、Ⅶ组水貂基础日粮中硫酸锌添加量(以锌元素计)为60 mg/kg.结果表明,冬毛生长期雌性水貂对添加蛋氨酸螯合锌水平为45 mg/kg的日粮的干物质、蛋白质和脂肪的消化率最高;不同锌源及锌水平日粮对生长期雌性水貂氮代谢的影响无显著差异.
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