PRELIMINARY INVESTIGATIONS IN THE INTENSIVE AND SEMI-INTENSIVE MARINE CAGE CULTURE OF FLORIDA RED TILAPIA UNDER DIFFERENT ENVIRONMENTAL CONDITIONS IN EGYPT.

Helal,, A. M.; Essa, Mohamed A.; Abu EI-wafa, Mona A.

doi:10.21608/jappmu.2004.239002

PRELIMINARY INVESTIGATIONS IN THE INTENSIVE AND SEMI-INTENSIVE MARINE CAGE CULTURE OF FLORIDA RED TILAPIA UNDER DIFFERENT ENVIRONMENTAL CONDITIONS IN EGYPT.

Document Type : Original Article

Authors

National Institute of Oceanography and Fisheries, Kayet Bay, Alexandria, Egypt.

10.21608/jappmu.2004.239002

Abstract

Four groups of Florida Red tilapia WEJre reared in marine cages in order to
investigate the effect of water temperature and culture systems( intensive and semi-
intensive) on their survival, growth, feed utilizaiion parameters as well as production
performance. Results of the study showed that 1) 20-28°C may be near the optimal
water temperature in capes: and 2) intensive and semi-intensive Florida Red tilapia
mariculture did not affect the fish production inversely in floating cages. Intensive
mariculture group had hi$lher fish production (10.24 kg/m3) than those of semi-
intensive group (6.43 kg/m-). This due to Florida 'ed tilapia fingerlings could withstand
conditions with high density. low content of disnolved oxygen and excess of organrc
matter.

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