Effects of capsaicin on laying performance, follicle development, and ovarian antioxidant capacity in aged laying ducks
文献类型： 外文期刊
作者： Liu, J. G. 1 ; Xia, W. G. 2 ; Chen, W. 2 ; Abouelezz, K. F. M. 3 ; Ruan, D. 2 ; Wang, S. 2 ; Zhang, Y. N. 2 ; Huang, X. B 1 ;
作者机构： 1.Hunan Agr Univ, Coll Anim Sci & Technol, Changsha 410128, Peoples R China
2.Guangdong Acad Agr Sci, Inst Anim Sci,Guangdong Key Lab Anim Breeding & N, State Key Lab Livestock & Poultry Breeding,Guangd, Key Lab Anim Nutr & Feed Sci South China,Minist A, Guangzhou 510640, Peoples R China
3.Assiut Univ, Fac Agr, Dept Poultry Prod, Assiut 71526, Egypt
关键词： capsaicin; laying duck; follicle; antioxidant
期刊名称：POULTRY SCIENCE （ 影响因子：2.659； 五年影响因子：3.103 ）
ISSN：
年卷期： 2021 年 100 卷 4 期
页码：
收录情况： SCI
摘要： The present study was conducted to evaluate the effects of dietary addition of capsaicin (CAP) on egg production performance, follicular development, and ovarian antioxidant capacity in laying ducks. Three hundred seventy eight 58-wk-old laying ducks were randomly divided into 3 treatments, each treatment consisted 6 replicates, with 12 individually caged laying ducks per replicate. Ducks fed a basal diet served as control, the other 2 groups of ducks were fed the same diet containing 150 mg/kg CAP but in the manner of feed restriction (pair-fed) or ad libitum fed. The experiment lasted for 8 wk. The results showed that the dietary supplementation with CAP under conditions of ad libitum feeding increased feed intake (P < 0.001) and tended (P < 0.1) to increase egg production and egg weight in laying ducks but had no effects on daily egg mass and feed conversion ratio. The relative weight of large yellow follicles from the 2 CAP-supplemented groups at 64 wk of age were significantly higher than that of the controls (P = 0.01). The relative weight of the small yellow follicles in the CAP free-fed group was significantly higher than that of the other 2 groups (P < 0.01). Capsaicin supplementation under ad libitum feding conditions tended to increase the number of dominant follicles in laying ducks (P = 0.06). The ovarian mRNA expression of genes related to calcium signaling (TRPV4, ATP2A2, ITPR1, and CaM) in the CAP ad libitum fed groups were significantly higher than those of the other 2 groups (P < 0.05). The ovarian mRNA expression of CDK1 in CAP free-fed ducks was significantly higher than that of the other 2 groups (P = 0.01). Capsaicin supplementation significantly increased the plasma glutathione peroxidase activity (P < 0.01) in comparison with the control group but reduced the malondialdehyde content in the ovaries of laying ducks (P < 0.01). The results of this study indicates that dietary supplementation of CAP increased feed intake and improved egg production performance probably by activating calcium signaling pathway and improving redox status.
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