Glicerina bruta em rações para peixes tambaqui: avaliação dos efeitos histopatológicos no fígado e rim
Palavras-chave:
Glicerol, Aquicultura, Tambaqui, Ração para peixes, HistopatologiaResumo
O presente estudo objetivou verificar se a utilização de glicerina bruta na dieta de juvenis de C. macropomum poderia promover alterações histopatológicas no fígado e nos rins. Foram utilizados 150 juvenis, divididos em 15 tanques de 1000 litros (cinco tratamentos e três repetições, n = 10). Foram utilizadas cinco diferentes rações com inclusões de glicerina bruta (0%; 7,5%; 10%; 12,5%; 15%) em troca do óleo de soja e substituição parcial do farelo de milho. Os animais foram alimentados até a saciedade durante 60 dias. Após esse período, amostras de fígado e rim de cada grupo foram submetidas ao processamento histológico e análises histopatológicas. O método semiquantitativo foi usado para avaliar as lesões: cálculo dos Valores Médios de alterações (MVA), que avaliam a ocorrência da lesão e o Índice de Alterações Histopatológicas (IAH), que permite avaliar a gravidade das lesões. Os resultados indicaram efeitos não prejudiciais significativos, mas respostas adaptativas à dieta. Em conclusão a inclusão de até 15% de glicerina bruta pode ser utilizada sem causar alterações hepáticas e renais significativas em juvenis de C. macropomum.
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Copyright (c) 2023 Eduardo Libanio Reis Santos, Sandro Estevan Moron
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