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
作者： Jiang, Q. 1 ; Yang, F. 1 ; Gao, X. 3 ; Wu, X. 2 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Special Anim & Plant Sci, State Key Lab Mol Biol Special Econ Anim, Changchun, Jilin, Peoples R China
2.Anhui Sci & Technol Univ, Coll Anim Sci, 1501 Huangshan Ave, Bengbu, Anhui, Peoples R China
3.Chinese Acad Agr Sci, Feed Res Inst, Beijing, Peoples R China
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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