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It is known that 20 percent feed cut during the fifth instar increases the reproductive efficiency in pure races without Sacrificing the other characters, it has not been tested on Indian races reared under tropical conditions. Hence, the Study was undertaken to Study the effect of feed cut in fifth instar on reproductive traits of two pure races viz. NB4D2 and KA. The results revealed that 20% feed cut during fifth instar had positive effect on some of the character studied. The marginal improvement was observed in pupation rate, fecundity and egg recovery in both the races.