EFFECT OF GARLIC AS A FEED ADDITIVE ON REPRODUCTIVE PERFORMANCE AND BODY WEIGHT OF NILE TILAPIA BROODSTOCK

Document Type : Research articles.

Author

Central Laboratory for Aquaculture Research, Agricultural Research Center, Ministry of Agriculture, Egypt

Abstract

This study was conducted at commercial hatchery at Kafr ElSheikh Governorate and the analytical studies were conducted at
Anim. Prod. Laboratory, Faculty of Agriculture Fayoum University
to evaluate the effect of three Garlic levels (0.0, 0.5 and 1.0%) in
Nile tilapia diets on their reproductive performance and their body
weight.
One year old Nile tilapia (Oreochromis niloticus) with
average weight of 240 g 3.16 were stocked for spawning into six
hapas at a density of 200 fish (150 female and 50 male) per hapa,
two hapas/treatment. Hapas were fixed in earthen pond. Fish fed the
tested diets at a rate of 0.5% from their total biomass. Water quality
parameters were measured. Production of seed (i.e., eggs and fry
production) were compared with the tested diets. The results
revealed that spawned females/wk, fecundity as the number of eggs
produced per female and fry production per fish were significantly
affected by dietary Garlic level. The highest values were obtained
with the diets contained 0.5% or 1.0 % Garlic levels. Feed
conversion as a feed required to produce 1000 fry was the best with
the Garlic supplementation diets.
It could be concluded that tilapia diets supplemented with
Garlic had a positive effect on their reproductive and feed
utilization. Comparisons between tested levels may suggest the use
of 0.5% Garlic level.

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