Recent Developments in Bream Culture: Culture Systems and Genetic Improvement

Wang, Weimin; Gao, Zexia

doi:10.1002/9781119120759.ch2_5

Cited by 5 publications

(1 citation statement)

References 15 publications

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“…Aquaculture is an increasingly important source of protein and plays a vital role in global food security [1]. In 2021, China's aquaculture yield reached 53.94 million tons, accounting for approximately 60% of the world's yield [2]. Various aquaculture models are used in China, including pond farming, cage farming, recirculating aquaculture, and integrated rice-fish farming [3].…”

Section: Introductionmentioning

confidence: 99%

Effects of Stocking Density on the Growth Performance, Physiological Parameters, Antioxidant Status and Lipid Metabolism of Pelteobagrus fulvidraco in the Integrated Rice-Fish Farming System

Diao

Jia

Hou

et al. 2023

Animals

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Pelteobagrus fulvidraco is a freshwater fish commonly raised in rice fields, yet the optimal stocking density for this species remains unknown. Therefore, this study aimed to investigate the appropriate stocking density of P. fulvidraco in integrated rice–fish farming systems. Three different stocking densities––low density (LD, 125 g/m2), middle density (MD, 187.5 g/m2), and high density (HD, 250 g/m2)––were set up to evaluate P. fulvidraco’s growth performance, stress indices, immune function, antioxidant status, and lipid metabolism after 90 days of farming. The results indicated that HD treatment had a detrimental effect on P. fulvidraco’s growth parameters. HD treatment led to an increase in cortisol (Cor) and lactate (La) levels, but a decrease in glucose (Glu) content in serum. After 90 days of farming, an immune response accompanied by the increase of complement 3 (C3), C4, and immunoglobulin M (IgM) was observed in the HD group. Meanwhile, HD treatment induced oxidative stress and altered antioxidative status evidenced by the levels of catalase (CAT), glutathione peroxidase (Gpx), glutathione (GSH), malondialdehyde (MDA), superoxide dismutase (SOD), and total antioxidant capacity (T-AOC) in serum or liver. Additionally, the lipid metabolism-related genes including lipoprotein lipase (lpl), peroxisome proliferators-activated receptor (pparα), carnitine palmitoyltransferase-1 (cpt-1), and sterol regulatory element binding protein-1 (srebp-1) were markedly downregulated in the HD and/or MD group after 90 days of farming. In conclusion, this study contributes to a better understanding of P. fulvidraco’s response to different stocking densities in integrated rice–fish farming systems. We suggest that the appropriate stocking density for P. fulvidraco in these farming systems should be below 250 g/m2, considering both fish growth and physiological responses.

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Section: Introductionmentioning

confidence: 99%