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Red drum Sciaenops ocellatus growth and expression of bile salt-dependent lipase in response to increasing dietary lipid supplementation.
González-Félix, Mayra L; Gatlin, Delbert M; Perez-Velazquez, Martin; Webb, Ken; García-Ortega, Armando; Hume, Michael.
Afiliação
  • González-Félix ML; Department of Scientific and Technological Research, University of Sonora, Edificio 7-G, Blvd. Luis Donaldo Colosio s/n, e/Sahuaripa y Reforma, Col. Centro, C.P, 83000, Hermosillo, Sonora, Mexico. mayra.gonzalez@unison.mx.
  • Gatlin DM; Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX, 77843-2258, USA.
  • Perez-Velazquez M; Department of Scientific and Technological Research, University of Sonora, Edificio 7-G, Blvd. Luis Donaldo Colosio s/n, e/Sahuaripa y Reforma, Col. Centro, C.P, 83000, Hermosillo, Sonora, Mexico.
  • Webb K; Fisheries and Mariculture Laboratory, Marine Science Institute, The University of Texas at Austin, Port Aransas, TX, 78373, USA.
  • García-Ortega A; College of Agriculture, Forestry and Natural Resource Management, Pacific Aquaculture and Coastal Resources Center, University of Hawaii at Hilo, Hilo, HI, 96720, USA.
  • Hume M; USDA, Food and Feed Safety Unit, Agricultural Research Service, College Station, TX, 77845, USA.
Fish Physiol Biochem ; 44(5): 1319-1331, 2018 Oct.
Article em En | MEDLINE | ID: mdl-29790089
Sciaenops ocellatus has a long history in aquaculture and many difficulties associated with its commercial culture have been addressed and successfully resolved; nevertheless, further research in lipid nutrition could address more comprehensive questions on the way these nutrients are utilized. The purpose of this study was to evaluate S. ocellatus growth and lipase gene expression in response to increasing dietary lipid supplementation. Four experimental diets were formulated to provide 3, 10, 16, or 23% lipid using menhaden fish oil. Twenty juveniles (mean initial weight 2.3 ± 0.1 g) were stocked per aquaria in a recirculating system; each diet was assigned to three aquaria and fed to fish for 6 weeks. At the end of the study, fish fed 3% of dietary lipid were significantly (P < 0.0001) smaller and showed significantly lower feed efficiency, condition factor, hepatosomatic index, and intraperitoneal fat than fish fed the other diets, but no differences were observed among fish fed 10, 16, or 23% lipid. A straight broken-line regression model for thermal growth coefficient provided an estimated value of 9.4% of dietary lipid as the optimal inclusion level. The bile salt-dependent lipase (BSDL) of red drum was 80.3 kDa. Relative gene expression of BSDL was significantly higher (P = 0.0007) in fish fed 10% lipid, with no differences among the other dietary treatments. Results provided could help monitor the metabolic status of farmed fish and contribute to optimize diet formulations based on maximum gene expression of BSDL for supplementation of dietary lipid.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Perciformes / Gorduras na Dieta / Regulação Enzimológica da Expressão Gênica / Esterol Esterase / Dieta / Ração Animal Tipo de estudo: Prognostic_studies Limite: Animals Idioma: En Revista: Fish Physiol Biochem Ano de publicação: 2018 Tipo de documento: Article País de afiliação: México País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Perciformes / Gorduras na Dieta / Regulação Enzimológica da Expressão Gênica / Esterol Esterase / Dieta / Ração Animal Tipo de estudo: Prognostic_studies Limite: Animals Idioma: En Revista: Fish Physiol Biochem Ano de publicação: 2018 Tipo de documento: Article País de afiliação: México País de publicação: Holanda