Annual yield of tilapia (Oreochromis niloticus L.) in a semi-recycling integrated system in Kuwait

摘要

A simple small-scale tilapia culture system suitable for integration in existing agricultural farms in Kuwait was studied. Nile tilapia (Oreochromis niloticus L.) fingerlings (2-7 g) were cultured sequentially in raceways inside a greenhouse. Well water flowed through the fish tanks during irrigation time and was recycled during non-irrigation time. The system was tested from January 1995 to August 1998. Results revealed that the system was capable of producing 2,340 kg fish per year and market size fish (>250 g) may be produced within 227 days. The partial water recycling system provided optimum environmental conditions for optimum fish growth. Problems identified during the trial were low DO of well water, power cut-off, leaking and bending of air supply pipes and very big size variation of fish at harvest. Measures to solve the problems are discussed in this paper.