EFFECT OF FEEDING REGIMES ON REPRODUCTIVE PERFORMANCE OF NILE TILAPIA (Oreochromis niloticus) BROODFISH IN A COMMERCIAL HATCHERY

Document Type : Research articles.

Author

Anim. Prod. Dept. Faculty of Agriculture, Fayoum University, Egypt.

Abstract

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.


Keywords