Survival and growth of Clarias gariepinus (burchel 1822) fry on cultured freshwater zooplankton and decapsulated Artemia
Journal Title: Scientific Journal of Zoology - Year 2013, Vol 2, Issue 6
Abstract
Artemia and dried zooplankton were fed to four day-old C. gariepinus fry at 3% and 5% feeding rates each as first feed. Dietary treatments were in triplicate, in a completely randomized design. Composition of mix-cultured zooplankton showed Rotifera (53.12%) to be dominant. Spawning with ovaprim at 0.5% ml/kg recorded 76% fertilization and 79% hatchability at temperature range of 28 to 300C. The best percentage survival (70.00 ±12.77) was obtained for larvae fed zooplankton at 3% feeding rate. Fry fed Artemia at 5% feeding rate, recorded specific growth rate of 12.68 ±0.64, which was significantly (P <0.05) higher than other three treatments. The condition factors ranged from 3.32 ± 0.09 to 1.73 ± 0.71 and were not significantly different (P > 0.05). Feed conversion ratio was best (0.31 ±0.09) in fry fed zooplankton at 3% feeding rate, and no significant (P >0.05) difference between the treatments. Water temperature ranged from 26.850C to 29.050C pH 7.71 to 7.83. Fry fed dried mixed-freshwater zooplankton diet had highest survival rate and the best growth rate obtained for fry fed Artemia. It was therefore concluded that Clarias gariepinus fry can be fed dried mixed-cultured freshwater zooplankton in event of scarcity and un-affordability of decapsulated Artemia.
Authors and Affiliations
M. Y. Abubakar*| Department of Forestry and Fisheries, Usmanu Danfodiyo University, P.M.B 2346, Sokoto, Nigeria., J. K. Ipinjolu| Department of Forestry and Fisheries, Usmanu Danfodiyo University, P.M.B 2346, Sokoto, Nigeria., W. A. Hassan| Department of Animal Science, Usmanu Danfodiyo University, P.M.B 2346, Sokoto, Nigeria, W. O. Alegbeleye| Department of Fisheries and Aquaculture, Federal University of Agriculture, Abeokuta, Nigeria.
Keywords
Related Articles
- EP ID EP969
- DOI -
- Views 453
- Downloads 27
Carcass characteristics of sexed broilers under two rearing systems in three housing zones in environmentally controlled broiler house during winter
The aim of study was to compare carcass characteristics of broiler housed under two different rearing systems (cage and floor) in three housing zones. For this purpose, 240 day old commercial broilers (Hubbard Classic) w...
Ectoparasites and haemoparasites of chickens in sokoto, northwestern Nigeria
A study to determine the prevalence of ecto and haemoparasites of chickens was carried out in Sokoto metropolis between April and August 2010. A total of 200 adult chickens from 2 different production systems (commercial...
Body measurements and slaughter parameters in four close bred stocks of Japanese quail reared under different levels of dietary lysine
The aim of study was to evaluate body measurements and slaughter parameters in four close bred stock (CBS) of Japanese quail (named as Major (M), Kaleem (K), Saadat (S) and Zahid (Z)) reared under different levels of die...
Schistosomus reflexus in a red Sokoto doe
Dystocia was observed in a primiparous One year old Red Sokoto Doe and was relieved manually, the fetus was observed to be monstrous and gross pathological examination showed; cleft sternum, scoliosis, abdominal and thor...
Effects of different ratios of associations of forage grasses and herbaceous legumes on the bio-mass yield in Bale highland, Ethiopia
The experiment was conducted from 2010/11 to 2012/13 with the objectives of identifying the appropriate types and level of grass-legume association for pasture productivity improvement in highlands of Bale. Accordingly,...