Digestible protein levels and metabolic responses in juvenile piapara (Megaleporinus obtusidens)

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorDe Almeida, Viviane Do Nascimento Santana-
Autor(es): dc.creatorCarli, Gabriela Castellani-
Autor(es): dc.creatorSátiro, Thaise Mota-
Autor(es): dc.creatorDo Nascimento, Thiago Matias Torres-
Autor(es): dc.creatorTakahashi, Leonardo Susumu-
Data de aceite: dc.date.accessioned2025-08-21T16:14:01Z-
Data de disponibilização: dc.date.available2025-08-21T16:14:01Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-04-12-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.20950/1678-2305/bip.2023.49.e754-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/248898-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/248898-
Descrição: dc.descriptionThis study aimed to determine the effects of dietary digestible protein (DP) on growth and physiological indicators in piapara. Three hundred piapara juveniles (24.0 ± 1.3 g) were distributed in 20 tanks of 130 L (15 fish/tank) with continuous aeration and water. Five isoenergetic diets (14.0 MJ·kg-1) were formulated to contain increasing levels of DP (21, 24, 27, 30 and 33%). After 77 days of feeding, increasing levels of digestible protein influenced final weight, specific growth rate and weight gain linearly (p < 0.05). Water ammonia concentration and liver alanine aminotransferase activity also showed a linear effect with an increasing DP level (p < 0.05), but no relationship was found between DP level and serum ammonia (p > 0.05). There was no linear and quadratic effect for hepatosomatic index, liver glycogen and liver lipid content (p > 0.05). On the other hand, the muscle lipid content decreased linearly with the increase in the DP level (p < 0.05), while the mesenteric fat index showed a linear and quadratic effect (p < 0.05) with an increasing curve until the peak of 25.77% DP. The activity of the hepatic malic enzyme also followed a quadratic pattern (p < 0.05) with a maximum point of 27.08% of DP. This contrasts with the hepatic enzyme glucose- 6-phosphate dehydrogenase, which increased linearly with the increase in the DP level (p < 0.05). The results showed better productive performance for fish fed with the highest levels of DP, though greater excretion of ammonia in the water was also shown. Diets below 27% DP resulted in greater energy reserve, amino acid catabolism and lipogenesis. Therefore, the inclusion of 28 to 30% DP in the diet will be ideal for growth and physiological responses in piapara.-
Descrição: dc.descriptionUniversidade Estadual Paulista “Júlio de Mesquita Filho” Faculdade de Ciências Agrárias e Tecnológicas, SP-
Descrição: dc.descriptionUniversidade Estadual Paulista “Júlio de Mesquita Filho” Centro de Aquicultura, SP-
Descrição: dc.descriptionUniversidade Estadual Paulista “Júlio de Mesquita Filho” Faculdade de Ciências Agrárias e Tecnológicas, SP-
Descrição: dc.descriptionUniversidade Estadual Paulista “Júlio de Mesquita Filho” Centro de Aquicultura, SP-
Idioma: dc.languageen-
Relação: dc.relationBoletim do Instituto de Pesca-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectEnergy retention-
Palavras-chave: dc.subjectOmnivorous-
Palavras-chave: dc.subjectPerformance-
Palavras-chave: dc.subjectPhysiological indicators-
Título: dc.titleDigestible protein levels and metabolic responses in juvenile piapara (Megaleporinus obtusidens)-
Título: dc.titleNíveis de proteínas digestíveis e respostas metabólicas em juvenis de piapara (Megaleporinus obtusidens)-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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