Effect of body weight on absolute and relative fecundity of Hypophthalmichthys molitrix with intramuscular injection of ovaprim-C
2011
Naeem, M. (Bahauddin Zakariya Univ., Multan (Pakistan). Inst. of Pure and Applied Biology) | Salam, A. (Bahauddin Zakariya Univ., Multan (Pakistan). Inst. of Pure and Applied Biology) | Elahi, N. (Fish Hatchery, Faisalabad (Pakistan). Dept. of Fisheries) | Ali, M. | Ishtiaq, A. | Andleeb, A.
The aim of the present study was conducted to evaluate effectiveness on induced spawning of silver carp (Hypophthalmichthys molitrix), fecundity, fertilization rate and hatchling rate by using single intramuscular injection of Ovaprim-C during July, 2007 in private Himalaya Hatchery. After fertilization hatching occurred within 18-24 h. In the present study, ovulation, fertilization and hatchling rate values were estimated to 100, 50.99 and 73.92%, respectively. Regression analysis was also used to assess the body weight dependence on absolute and relative fecundity. Absolute fecundity was positively correlated with wet body weight (r = 0.667***) (p less than 0.001), while relative fecundity remains fairly constant (r = 0.275n.s) (p greater than 0.05) with increasing wet body weight. Wet body weight and absolute or relative fecundity can also be described by linear equation: Y = a + bX, which can be used to estimate the absolute fecundity with a fair amount of accuracy.
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