Growth and production of C. lazera (C. & V.) and S. niloticus L. in mono-and mixed culture were studied in relation to stocking density and pond size using a low grade feed. The biomass after 24 weeks ranged from 16 to 115 g·m−2 for tilapia and from 50 to 266 g·m−2 for C. lazera. Independent of the other treatments, the use of C. lazera resulted in a more than 2.5-fold increase in the biomass as compared with tilapia. For both species the biomass increased with increasing stocking density, but the individual weight was greatly reduced. The growth of neither tilapia nor C. lazera was found to be affected by the presence of the alternate species, indicating the absence of interspecies competition. Increased pond size resulted in a lower biomass of tilapia, while the growth of C. lazera was independent of the pond size
|Publication status||Published - 1983|
Hogendoorn, H., & Koops, J. (1983). Growth and production of the African catfish, Clarias lazera (C. & V.) I. Effect of stocking density, pond size and mixed culture with tilapia (Sarotherodon n). Aquaculture, 34, 253-263.