Requirement of rainbow trout for dietary zinc.

Dietary manganese requirement of juvenile yellow catfish Pelteobagrus fulvidraco, and effects on whole body mineral composition and hepatic intermediary metabolism

“…Similarly, depressed growth in fish receiving Mn-deficient diets has been reported in other fish species, such as rainbow trout (Ogino and Yang, 1980), common carp (Ogino and Yang, 1980;Satoh et al, 1987), grass carp (Wang and Zhao, 1994) and gibel carp (Pan et al, 2008). Reduced feed utilization was also observed in fish fed the Mn-deficient diet, in agreement with Pan et al (2008) and Ye et al (2009).…”

“…CF has been used to characterize short body dwarfism by Serrini et al (1996). Short body dwarfism linked to disturbances in bone formation as the dietary Mn deficiency sign had been reported in rainbow trout (Ogino and Yang, 1980;Yamamoto et al, 1983), common carp (Satoh et al, 1992) and gibel carp (Pan et al, 2008). Our study also indicated that higher dietary Mn levels more than the requirement did not significantly reduce the growth performance in yellow catfish.…”

“…Whole body Mn concentrations increased as dietary Mn supplementation level increased. Similarly, whole body Mn responded readily to dietary Mn in rainbow trout (Knox et al, 1981;Ogino and Yang, 1980), common carp (Ogino and Yang, 1980;Satoh et al, 1987), channel catfish (Gatlin and Wilson, 1984), grass carp (Wang and Zhao, 1994), Atlantic salmon (Lorentzen and Maage, 1999;Lorentzen et al, 1996;Maage et al, 2000) and gibel carp (Pan et al, 2008). In the present study, declining Ca, P and Fe contents in whole body were observed in fish fed the diets containing increasing Mn levels (P b 0.05).…”

“…In contrast, Pan et al (2008) reported that carcass and skeletal Mn contents could be used to evaluate the Mn requirement, and that hepatic SOD activity was not an ideal indicator for Mn requirement in gibel carp. Based on WG, PER and hepatic Mn-SOD activity, dietary Mn requirements obtained for juvenile yellow catfish varied between 5.5 and 6.4 mg Mn kg − 1 diet, which is lower than those reported in common carp, rainbow trout (13-15 mg kg − 1 ) (Ogino and Yang, 1980;Satoh et al, 1991Satoh et al, , 1992 and grass carp (15 mg kg − 1 ) (Wang and Zhao, 1994), Atlantic salmon (7.5-10.5 mg kg − 1 ) (Maage et al, 2000), gibel carp (13.77 mg Mn kg − 1 ) (Pan et al, 2008), but higher than that in channel catfish (2.4 mg kg − 1 ) (Gatlin and Wilson, 1984). The differences among these experiments may be the result of different fish species, different diet formulations and different evaluating criteria applied.…”

“…Fish fed low Mn diets may exhibit deficiency signs, including increased mortality, poor growth, depressed feed intake, skeletal abnormalities (dwarfism), lens cataracts, low tissue Mn content and low Mn-superoxide dismutase (Mn-SOD) activities (Lall, 2002;NRC, 1993). The quantitative requirement for Mn in fish has been reported in rainbow trout (Ogino and Yang, 1980;Satoh et al, 1991), common carp (Ogino and Yang, 1980;Satoh et al, 1987), grass carp (Wang and Zhao, 1994), channel catfish (Gatlin and Wilson, 1984), Atlantic salmon (El-Mowafi, 1995;Maage et al, 2000), gibel carp (Pan et al, 2008) and tilapia (Lin et al, 2008), and reported dietary Mn requirements for these fish species varied between 2.4 and 15 mg Mn kg − 1 diet.…”