Dietary selenium requirement of coho salmon (Oncorhynchus kisutch W.) alevins

Evaluation of dietary selenium methionine levels and their effects on growth performance, antioxidant status, and meat quality of intensively reared juvenile Hypophthalmichthys molitrix

“…requirement of silver carp. The Se bioaccumulation in the liver and kidney was significantly increased in this experiment and the results were consistent with previous research [22,23,27]. This higher Se deposition in tissues enhances the selenoproteins formation which results in better antioxidant capacity of the fish to combat the stress [28].…”

“…The results regarding different fish species Se requirements are not consistent some reported higher [4,23], and others reported lower [24]. This difference might be due to the several incomputable variations in fish species, environmental differences [25], biochemical properties of different Se sources [26], and mathematical models used to find the Se requirement [27]. Therefore, we can infer that this research would provide the baseline regarding the Se 1 Selenium levels = basal diet containing supplementation of selenium methionine @ 0 mg/kg (0.0), 0.3 mg/kg (0.3), 0.6 mg/kg (0.6), 0.9 mg/kg, (0.9) and 1.2 mg/kg (1.2).…”

Growth, Nutrient Retention, Waste Output, and Antioxidant Capacity of Juvenile Triangular Bream (Megalobrama terminalis) in Response to Dietary Selenium Yeast Concentration

“…In our study, activities of GSH-Px, SOD, and lysozyme in both the liver and kidney were significantly improved when fish were fed diets supplemented with 1.46-8.24 mg Se/kg, which indicated that appropriate dietary selenium effectively increased oxidative resistance and nonspecific immunity of triangular bream. Similar responses were reported for activities of GSH-Px, SOD, and lysozyme in the liver of coho salmon [27], cobia [7], and grouper [6], as well as in serum of black sea bream [28], with dietary selenium content increased within the optimal requirement level.…”

“…As reported in studies conducted on coho salmon ( Oncorhynchus kisutch ) [ 27 ], meagre [ 9 ], black sea bream ( Acanthopagrus schlegelii ) [ 28 ], Nile tilapia [ 8 ], cobia [ 7 ], and common carp [ 29 ], selenium generally acts as a promoter to improve nutrients deposition via the enhancement of feed utilization efficiency in fishes that were fed at suitable dietary selenium concentrations. In the present study, higher NRE and PRE were found, whereas relative lower FCR was found in fish fed diets Se1, Se3, and Se9 than in fish fed diet Se12, which suggested that dietary inclusion of selenium that ranges 4.10-22.87 mg/kg is beneficial for ameliorating feed utilization efficiency in triangular bream.…”

“…Similar results were also reported in early researches. For instance, Du et al [ 27 ] reported that condition factor, HSI, and intestinal somatic index in coho salmon showed no statistically differences when fed at various dietary selenium levels. The condition factor and VSI in largemouth bass were not influenced by dietary selenium concentrations [ 23 ].…”