Dietary carbohydrate‐to‐lipid ratios modulate juvenile hybrid grouper (♀ Epinephelus fuscoguttatus × ♂ E. lanceolatus): Effects on growth, serum biochemistry, intestinal digestion and hepatic metabolism of glucose and lipid. (6th May 2021)

• Record Type: Journal Article
• Authors: Chen, Guofeng; Qian, Jiahao; Liu, Hongyu; Tan, Beiping; Dong, Xiaohui; Yang, Qihui; Chi, Shuyan; Zhang, Shuang
• Is Part Of: Aquaculture nutrition. Volume 27:Number 5(2021)
• Page Start: 1370
• Page End: 1382
• Publication Date: 2021-05-06
• Subjects: ♀ Epinephelus fuscoguttatus × ♂ E. lanceolatus -- dietary carbohydrate‐to‐lipid ratios -- glucose metabolism -- growth -- lipid metabolism -- serum biochemistry; Aquaculture -- Periodicals; Aquatic animals -- Feeding and feeds -- Periodicals; Fishes -- Feeding and feeds -- Periodicals; 639.3
• DOI: 10.1111/anu.13275
• Languages: English
• ISSNs: 1353-5773

Abstract

Abstract: A 56 day feeding trial was conducted to study effects of different carbohydrate‐to‐lipid (CHO.L −1 ) ratios on growth, serum biochemistry, intestinal digestion and hepatic metabolism of glucose and lipid in juvenile hybrid grouper ( Epinephelus fuscoguttatus × ♂ E . lanceolatus ). Results showed that moderate CHO.L −1 ratio resulted in better growth performance ( p < .05). In serum, glucose, insulin and alanine aminotransferase were enhanced as CHO.L −1 ratios increased, whereas cholesterol was reduced ( p < .05). Increased CHO.L −1 ratios resulted in raised activity of amylase and reduced activity of lipase in gut ( p < .05). Gene expression related to glucose transporters improved ( p < .05). Enzyme activity and gene expression involved in hepatic glycolysis improved in a limited manner, whereas enzyme activity and gene expression related to hepatic gluconeogenesis and lipolysis were inhibited in high CHO.L −1 ratio group. Enzyme activity of hepatic lipogenesis showed an elevated trend, including acetyl‐CoA carboxylase and fatty acid synthase ( p < .05). In conclusion, different dietary CHO.L −1 ratios affected growth, serum biochemistry, intestinal digestion and hepatic metabolism of glucose and lipid in grouper. Moreover, juvenile grouper could utilize diet containing moderate CHO.L −1 ratio.