THE EFFECT OF SOME MEDICINAL PLANTS ON REPRODUCTIVE AND PRODUCTIVE PERFORMANCES OF NILE TILAPIA FISH

Abstract

Three trials were conducted on Nile tilapia fish (Oreochromis niloticus). The I st and 2nd trials to evaluate the effect of Garlic or Fenugreek seeds as feed additives at a rate ofO.O, 0.5 and 1.0% from the total diet on the reproductive performance and body weight of the brood stock. The 3rd trial to evaluate the effect of GarI ic as a feed additive at a rate of 0.0, 0.5 and 1.0 %from total diet on grovvth performance, body chemical composition and feed utilization of monosex fingerlings. The results revealed that; Spawned female number/week, egg number/fish/week, fry number/

fish/week, spawning number/fish/trial period and feed conversion ratio as amount of feed required to produce I 000 fry were improved significantly (PS0.05) with Garlic or Fenugreek addition. The highest values were obtained with 0.5 % Garlic or Fenugreek levels followed by 1.0% and 0.0% levels, respectively.