文献类型： 外文期刊

作者： Wang, Sibo ¹ ; Wu, Hongzhi ² ; Zhu, Yunhui ¹ ; Cui, Hongxia ³ ; Yang, Ji ¹ ; Lu, Mingyuan ¹ ; Cheng, Huangzuo ¹ ; Gu, Lihong ⁴ ; Xu, Tieshan ² ; Xu, Li ¹ ;

作者机构： 1.Northeast Agr Univ, Coll Anim Sci & Technol, Harbin, Peoples R China

2.Chinese Acad Trop Agr Sci, Trop Crop Genet Resource Res Inst, Haikou, Peoples R China

3.Inner Mongolia Ordos City Agr & Forestry Technol, Ordos, Peoples R China

4.Hainan Acad Agr Sci, Inst Anim Sci & Vet, Haikou, Peoples R China

关键词： lycopene; growth performance; antioxidant enzyme activity; Keap1-Nrf2; broilers

期刊名称：FRONTIERS IN VETERINARY SCIENCE （ 影响因子：3.471； 五年影响因子：3.821 ）

ISSN：

年卷期： 2022 年 9 卷

页码：

收录情况： SCI

摘要： The objective of this study was to determine the effect of dietary lycopene supplementation on the growth performance, antioxidant enzyme activity of serum and liver, and gene expressions associated with Kelch-like ech-associated protein-1 (Keap1)/Nuclear Factor E2-related factor 2 (Nrf2) pathway in liver of Arbor Acres broilers. A total of 288 1-day-old male broilers were randomly divided into 4 treatments with 6 replicates and 12 chickens for each replicate. The control group was fed with the basal diet, while the treated groups were fed with the basal diet with 10, 20, and 30 mg/kg lycopene in powder. Feed and water were provided ad libitum for 42 days. Compared with the control group, (a) the average daily gain increased (p = 0.002 vs. p = 0.001) and the feed conversion ratio decreased (p = 0.017 vs. p = 0.023) in groups treated with lycopene in the grower and whole phases, and the average daily feed intake was quadratically affected (p = 0.043) by lycopene in the grower phase; (b) the serum superoxide dismutase content was linearly affected (p = 0.035) by lycopene at 21 days; (c) the serum glutathione peroxidase content, superoxide dismutase content, and total antioxidant capability were higher (p = 0.014, p = 0.003, and p = 0.016, respectively) in the 30 mg/kg lycopene group at 42 days; (d) the liver glutathione peroxidase and superoxide dismutase contents in groups treated with lycopene were higher (p <= 0.001 vs. p <= 0.001) at 21 days; (e) the liver glutathione peroxidase content was higher (p <= 0.001) in the 20 and 30 mg/kg lycopene groups, at 42 days; (f) the mRNA expression levels of Nrf2, superoxide dismutase 2, NAD(P)H quinone dehydrogenase 1, and heme oxygenase 1 genes were higher (21 days: p = 0.042, p = 0.021, p = 0.035, and p = 0.043, respectively; 42 days: p = 0.038, p = 0.025, p = 0.034, and p = 0.043, respectively) in the 20 and 30 mg/kg lycopene groups at 21 and 42 days. The 30 mg/kg lycopene concentration improved the growth performance, antioxidant enzyme activity in serum and liver, and gene expression in the Keap1-Nrf2 signaling pathway of Arbor Acres broilers.