Trace metal analysis of edible portion of Oreochromis nilotica in relation to growth

Effect of body size on the concentration of two essential macro elements (Calcium and Magnesium) in wild Eutropiichthys vacha from Indus River, Taunsa Barrage, Pakistan

“…In the present study, Ca and Mg concentrations did not affected by condition factor in wild E. vacha. Similar findings have also reported in wild catfish Mystus bleekeri [22] and in female Nile Tilapia [19]. Thus, these findings verify the results that condition factor stayed constant for the concentrations of Ca and Mg in the body of E. vacha.…”

“…Values of mean concentrations of studied metals (Table 1) in Eutropiicthys vacha represented the trend as, Calcium > Magnesium. The same trend was also reported by [18] in Oncorhynchus mykiss and [19] in Aristichthys nobilis. Results of this study are in agreement with report of [20], who had studied the effect of graded levels of dietary protein on elemental concentration of hybrid (Catla catla ♂ x Labeo rohita ♀) from Pakistan and reported that Ca concentration 992.05±48.94, 1015.89±31.43 and 1145.53±40.53 while Mg concentration 1145.53±40.53, 403.19±30.71 and 484.18±27.99 µg/g by feeding 15, 20 and 25% CP, respectively.…”

“…Results of this study are in agreement with report of [20], who had studied the effect of graded levels of dietary protein on elemental concentration of hybrid (Catla catla ♂ x Labeo rohita ♀) from Pakistan and reported that Ca concentration 992.05±48.94, 1015.89±31.43 and 1145.53±40.53 while Mg concentration 1145.53±40.53, 403.19±30.71 and 484.18±27.99 µg/g by feeding 15, 20 and 25% CP, respectively. Values of magnesium and calcium in present study found higher than [19], lower by [21] in Cirrhinus mrigala as values of present study obtained. Study dry weight value of magnesium are higher and values of calcium are lesser than findings of [18] in Oncorhynchus mykiss.…”