Effects of Dietary Ramie Powder at Various Levels on the Production Performance, Serum Biochemical Indices, Antioxidative Capacity, and Intestinal Development of Laying Hens

Frontiers in Physiology

Zhi-Yong Fan¹  Peng Huang¹  Ying-Hui Li¹  Qian Lin²  Guang-Ying Duan²  Yang Liu²  Yong-Mei Wu²  Chun-Jie Liu³  Hao-Han Zhao³  Hua-Jiao Qiu³  Xin Wang³  Si-Yuan Zhu³  Tou-Ming Liu³  Yan-Zhou Wang³ 

[1] College of Animal Science and Technology, Hunan Agricultural University, Changsha, China;Hunan Deren Husbandry Technology Co., Ltd., Changde, China;Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, China;

关键词: ramie;    laying production performance;    serum biochemical indices;    antioxidative capacity;    intestinal development;   

DOI  :  10.3389/fphys.2021.823734

来源: DOAJ

【 摘 要 】

The purpose of this study was to investigate the effects of ramie (0, 3, 6, and 9%) included in diets on production performance, antioxidative capacity, serum biochemical indices, and intestinal development of laying hens. A total of 432 Lohmann commercial laying hens were randomly allotted to one of four dietary treatments and fed for 6 weeks. The results showed that the inclusion of ramie had no negative effects on laying performance, and increased (quadratic, P < 0.05) the laying rate with the highest value in the 6% ramie group. However, ramie content in the diet up to 9% reduced the apparent metabolic energy, dry matter, and organic matter apparent digestibility of laying hens compared with those in the 3% ramie group. The content of high-density lipoprotein (HDL-C) in serum was increased (P < 0.05), but the activity of aspartate aminotransferase (AST) was decreased (P < 0.05) by dietary ramie supplementation. As the dietary ramie level increased, the activity of serum glutathione peroxidase (GSH-Px) was increased quadratically (P < 0.05). Compared with control, 3% ramie group significantly increased (P < 0.01) liver total superoxide dismutase (SOD) activity. Meanwhile, the addition of 3∼6% ramie powder increased (P < 0.05) villus height of jejunum and villus height/crypt depth (V/C) of ileum, which reflected the intestinal promotional effect of ramie powder. In conclusion, ramie in a diet of less than 9% might protect the liver and improve the antioxidative capacity with no detrimental impacts on the laying hens. Moreover, it could promote the intestinal mucosal structure and have a positive impact on the intestine health of the laying hens.

【 授权许可】

Unknown