LYSINE SUPPLEMENTATION IMPROVES NUTRIENTS DIGESTION, GROWTH PERFORMANCE AND LIVER FUNCTION OF FEMALE BLUE FOXES (Alopex lagopus) IN GROWING PHASE

文献类型： 外文期刊

第一作者： Jiang, Q.

作者： Jiang, Q.;Yang, F.;Jiang, Q.;Wu, X.;Gao, X.

作者机构：

关键词： lysine; low protein diets; female blue foxes; growing phase; growth performance

期刊名称：JOURNAL OF ANIMAL AND PLANT SCIENCES-JAPS （ 影响因子：0.57； 五年影响因子：0.756 ）

ISSN： 1018-7081

年卷期： 2021 年 31 卷 6 期

页码：

收录情况： SCI

摘要： The present study investigated the effects of lysine supplementation in low-protein diets on nutrients digestibility, growth performance and healthy status of growing female blue foxes (Alopex lagopus). Control animals were fed a diet containing normal protein level (32% of dry matter, DM). Animals in the treatment groups were challenged with low protein diets supplemented with 0.00%, 0.20%, 0.40%, 0.60%, 0.80% and 1.00% lysine, corresponding to 0.87%, 1.07%, 1.27%, 1.47%, 1.67% and 1.87% total lysine of DM, respectively. Results showed that 1.47% lysine supplementation exerted beneficial effects (P < 0.05) on blue foxes, as evidenced by improved digestibility of crude protein (CP) and several amino acids (aspartic acid, glycine, methionine, isoleucine and tyrosine). Similar effect was observed in N retention (P < 0.05) and the growth performance (P < 0.05). Additionally, the 0.87% lysine group exhibited a significant decrease in blood albumin (ALB) as opposed to the other groups (P < 0.01). Collectively, these findings indicate that quality of low-protein diet can be improved by supplemented lysine without influencing health of female blue foxes at the growing phase. The optimum lysine for maximum performance and low N emission of the growing female blue foxes in approximately 1.47% of DM.

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