TY  - JOUR
T1  - Artificial Propagation of African Clariid Catfish, Heterobranchus bidorsalis (Geoffory Saint Hilaire 1809)
AU - , Fagbenro, O.A. AU - , O. T. Adebayo 
JO  - Journal of Animal and Veterinary Advances
VL  - 3
IS  - 8
SP  - 527
EP  - 531
PY  - 2004
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2004.527.531
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2004.527.531
KW  - 
AB  - Artificial spawning was induced in female African giant catfish, Heterobranchus bidorsalis by single intramuscular hormone injections of carp pituitary suspensions (CPS) at 4 mg/kg body weight (bw), 1.5ml of homoplastic pituitary suspension (HPS) per fish or human chorionic gonadotropin (HCG) at 2000 IU/kg bw, over three months of rainy season (June to August) in Nigeria. At ambient temperature (27?1oC), ovulation occurred within 14-18 h post injection. Egg hydration gave 16-20% increase in egg diameter. Hatching rates were high (>84%) and similar for all hormone-treated fish (P>0.05). The percentage normal larvae hatched ranged from 81.6% to 86%. They were reared in 500-l circular tanks and fed initially on zooplankton, followed by brine shrimp nauplii and finally weaned onto commercial fish fry diet. During the larval rearing trials for 30 days, survival rates >82% were achieved. Although the four hormones tested were effective inducers, the use of HPS would save operational costs in fish hatchery management.
ER  -