Comparative Study on the Breeding Performance of Two Different Strains (XY Male and YY Male) of Nile Tilapia (Oreochromis niloticus)
oreochromisniloticus, yy male, xy male, breeding performance
Abstract
The study was conducted to know the breeding performance of two strains (YY and XY male tilapia) of in Bismillah Agro production hatchery of Noakhali Sadar in Noakhali district, Bangladesh from May to August, 2012.The length, weight of the brood fishes and gonad weight, fecundity, egg fertilization rate, hatching rate, fry survival rate and larval growth in both strains were assessed. YY male showed the highest length and weight during three stocking months. Average fertilization rate and hatching rate were higher in YY male derived than that of XY male derived egg. Higher average larval survival rate and larval growth was observed in YY male derived progeny than that of XY male derived. Production of male population was higher in YY male than XY male tilapia. The result of the present study concluded that YY male tilapia outperformed than XY male in all cases of breeding performance.
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2015-01-14
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