DIETARY PROTEIN LEVELS AFFECT THE NURSING PERFORMANCE AND SERUM BIOCHEMICAL PROFILE OF LACTATING MINK (Neovison vison)

文献类型: 外文期刊

第一作者: Jiang, Q.

作者: Jiang, Q.;Zhang, T.;Li, G.;Zhang, H.;Xing, X.;Yang, F.;Gao, X.;Wu, X.

作者机构:

关键词: dietary protein; female mink; lactation; nursing performance

期刊名称:JOURNAL OF ANIMAL AND PLANT SCIENCES ( 影响因子:0.49; 五年影响因子:0.686 )

ISSN: 1018-7081

年卷期: 2020 年 30 卷 4 期

页码:

收录情况: SCI

摘要: This study was aimed to evaluate effects of dietary protein levels on the nursing performance of lactating mink (Neovison vison ). A total of 120 pregnant mink were randomly assigned to 4 dietary treatment groups with protein levels of 32% (P32, control), 36% (P36), 40% (P40) and 44% (P44) (dry matter basis, corresponding to 29%, 32%, 36% and 39% of ME), and fed ad libitum for 8 weeks from late gestation to the end of lactation. Results showed that daily weight gain of kits increased linearly with the increasing dietary protein levels although the difference was not significant. Similar trend was noted for the survival rate of kits at weaning. Dams fed diets with higher protein levels showed less body weight loss during lactation. Improved metabolic status was demonstrated by the changed metabolic profiles as indicated blood urea nitrogen level (P<0.05), total protein (P<0.05), glutamate pyruvate transaminase activity and blood glucose content (P<0.05). In conclusion, we found that dietary protein intake significantly affects the nursing performance of female mink. We suggest that an estimated dietary protein level of 44% (39% of ME) could be used as a guidance to achieve the optimal performance of lactating dams.

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