Corn gluten and meat and bone meals as protein sources in diets for gilthead seabream (Sparus aurata): Nutritional and histological implications

Growth, Nutrient Utilization and Body Composition of Juvenile Bagrid Catfish, <I>Chrysichthys Nigrodigitatus</I> (Actinopterygii: Siluriformes: Claroteidae), Fed Different Dietary Crude Protein Levels

“…The fact that PER was not affected by dietary protein level in the current study except with 20%CP indicates that all the other tested protein levels were used efficiently. This is in agreement with earlier studies with gilthead seabream, Sparus aurata (see: Robaina et al 1997 (2007). Other studies found that PER declined with increasing dietary protein in rabbitfish, Siganus guttatus (see : Parazo 1990), gilthead seabream (Santinha et al 1996), olive flounder (Kim et al 2002), and pike perch (Schulz et al 2007).…”

Effect of replacement of fish meal by meat and bone meal and poultry by-product meal in diets on the growth and immune response of Macrobrachium nipponense

“…However, Stone et al [36] reported that MBM products were successfully used to replace 50% fish meal protein in silver perch Bidyanus bidyanus diets. Similarly, gilthead bream can tolerate up to 40% substitution of MBM (providing about 40% protein) for fish meal in their diets [22]. More positive results have been reported by Davies et al [24], who found that an optimum ratio of MBM could effectively replace up to 75% of fish meal in practical diets for tilapia, and diets containing MBM were superior as complete alternative protein to fish meal.…”

“…Generally, MBM is rarely included in commercial aquafeeds at levels higher than 20% [21]. However, more positive results have been reported with sea bream Sparus aurata [22], rainbow trout Salmo gairdneri [23] and tilapia Oreochromis mossambicus Peters [24]. PBM seemed to be a more promising protein and generally could efficiently substitute up to 50% fish meal protein in fish diets [25e27].…”

Enzimas digestivas exógenas na alimentação de juvenis de tambaqui

“…Ao testar no Salvelinus alpinus L. alimentos à base de farelo de soja, verificaram um decréscimo da atividade da amilase. Alguns trabalhos realizados, substituindo a farinha de peixe por fontes protéicas de origem vegetal, alertam sobre a presença de fatores antinutricionais (Robaina et al, 1997;Burel et al, 2000), que em geral são inibidores de proteases, limitando a porcentagem de inclusão da proteína vegetal na formulação de rações para espécies carnívoras (Boonyaratpalin et al, 1998). No caso do tambaqui, que parece possuir um bom aproveitamento da proteína de origem vegetal, a inclusão de protease não influenciou significativamente o crescimento dos peixes.…”