Effect Of Different Dietary Items On The Growth Of African Catfish Hybrid Heterobranchus Bidorsalis (♂) X Clarias Gariepinus

Abstract

This paper describes the growth response of the developmental stages of hybrid cat ish resulting rom the crossing of Heterobranchus bidorsalis (male) and Clarias gariepinus (female), fed with different feed rations. Hatchlings of the hybrid catfish were cultured in plastic aquaria set up at the fish hatchery complex, Nnamdi Azikiwe University, Awka. The hatchlings were fed and observed for 91 days. Different food items such as artificially compounded feed, zooplankton / live organisms Moina sp and Brachionus sp, and a mixture of zooplankton (Moina sp and Brachionus sp) and artificially compounded feed were administered. The mixture gave the best result with a mean weight o 7 92g ± 2.73g fo lowed by those fed Moina sp (1.93g ± 0.27) and Brachionus sp (1.80g ± 0.32) respectively. Hatchlings fed only artificially compounded feed exhibited the poorest growth. A mixture of live food organisms and art cially compounded feed is thus recommended for better growth response of catfish hybrid, (H. bidorsalis ♂ x C. gariepinus ♀). f f , f . , l ifi r

Comparative growth performance and survival of hatchery-reared African catfish fry (Clarias gariepinus Burchell 1822) fed on live and artificial diets

“…Artemia Lush® and Inve® fed larvae had higher length gain, weight gain, and growth rate than Shrimp and artificial feed Durante® fed larvae, even though Shrimp and Durante® have higher protein content than Artemia Lush®. The report of Ezechi and Nwuba [17] stated that an increase in dietary protein could lead to an increase in growth, and it is also in agreement with the report of Ukwe et al, [37 ] who stated that Artemia with less protein (48.55%) content had better growth than Aqualis with the higher protein content of (53.74%). This could be as a result of the fact that Artemia as a live feed has its protein properly utilized for growth, as evident in its high protein efficiency ratio [5,25] , it could also be a result of the fact that the live exogenous enzymes that come with live feeds facilitated digestion in the fry since their digestive system at this stage is poorly developed [31] .…”

Comparative Growth Performance and Survival Of African Catfish (Clarias gariepinus ) Fed With Artemia and Acartia Live Feeds

“…The protein level of any given feed affects the fish growth differently, with the best tilting towards increase in the protein level of the feed. Though feeds be it live or artificial have different effects on fish larva with respect to growth response [14].…”

EFFECT OF DIFFERENT MALE-FEMALE BROODSTOCK RATIO ON THE INDUCED BREEDING PERFORMANCE OF Clarias gariepinus.

“…A major pre-requisite for successful fish farming enterprise is a reliable and consistent source of fish seeds (fingerlings) of the commercially important species (Nwuba and Aguigwo, 2002). The surest and most reliable source of supply is to produce the fingerlings under a controlled system, usually in a hatchery as was emphasized by Ezechi and Nwuba (2007). The objective of this study was to determine the most appropriate male to female of catfish (Clarias gariepinus) broodstock for induced breeding.…”