The effect of different concentrations of 17α-methyl testosterone incorporated diet on growth performance in the fry of
Channa punctatus
and
Cirrhinus mrigala
was evaluated
.
Four different doses of hormone such as 60, 80, 100 and 120 mg/kg in
C. punctatus
and 40, 60, 80 and 100 mg/kg in
C. mrigala
were administered through diet for a period of 90 days.
Fifth group on a hormone free diet served as a control. The growth performance in terms of length and weight gain of the fry receiving 100 mg/kg in
C. punctatus
and 60 mg/kg in
C. mrigala
were significantly higher than those receiving 80, 120 and 0 (untreated control) mg hormone per kg feed. The highest specific growth rate (0.864 ± 1.18%WG d
−1
) at 100 mg/Kg diet and (2.47 ± 1.26%WG d
−1
) at 60 mg/kg diet were observed in
C. punctatus
and
C. mrigala
respectively, showing positive influence of hormone incorporated diet on the growth performance. However, the survival rate of both the species remained unaffected by different dosages of 17α-methyl testosterone.
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