期刊
AQUACULTURE NUTRITION
卷 24, 期 6, 页码 1752-1768出版社
WILEY
DOI: 10.1111/anu.12815
关键词
adipocytokine; conjugated linoleic acid; Ctenopharyngodon idella; gene expression; growth performance
类别
资金
- National Natural Science Foundation of China [31672666, 31302195]
- Natural Science Foundation of Hubei Province of China [2016CFB389]
- Educational Commission of Hubei Province [D20151705]
- Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety
A 65-day growth trial was conducted to investigate the effects of dietary conjugated linoleic acid (CLA) on growth performance, tissue adipocytokine levels and lipid metabolism of grass carp. Seven isonitrogenous and isolipidic diets were formulated as follows: 0 (control), 5 (CLA5), 10 (CLA10), 15 (CLA15), 20 (CLA20), 25 (CLA25) and 30 (CLA30) g/kg CLA. Results showed that incorporating as low as 25 g/kg CLA in the diet significantly decreased the growth of grass carp. The liver lipid content in fish fed with CLA15 to CLA30 significantly decreased. The leptin and resistin levels in liver of fish fed with CLA5 to CLA30 diets significantly increased. The mRNA expression levels of fatty acid synthase (FAS) and triacylglycerol lipase (TGL) in liver of fish fed with CLA5 to CLA30 and CLA10 to CLA30 diets also significantly decreased, respectively. In summary, the lipid-lowering effects in grass carp liver were induced by the supplementation of 15-20 g/kg CLA, but its growth remained unaffected. Moreover, the lipid-lowering effects of CLA on grass carp could also be modulated both by adipocytokine levels and by the expression of genes involved in lipid metabolism in tissues.
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