Effect of feeding regimes on reproductive performance of nile tilapia (oreochromis niloticus)‎ broodfish in a commercial hatchery

الملخص EN

The present work was conducted in commercial hatchery at Shakshouk, Fayoum Governorate.

The trial started at 6 / 5 / 2005 and lasted for 122 days.

A number of 105 females and 35 males of one year old broodfish weighing 170 to 175 g in average were used per hapa.

Five feeding regimes were used (0.5, 1.0, 1.5, 2.0 and 3.0 % of broodfish body mass / day) forming 5 treatments (regimes).

Seeds were collected at 10 day intervals starting from 28 /5 / 2005.

Data obtained were on reproductive performance, growth performance and economic evaluation.

Data revealed that the 1 % feeding rate showed better reproductive performance and economic evaluation.

The 0.5 % feeding rate tended to show slightly lower values.

The other higher levels of feeding were not recommended.