Mahsoub, F., El Gaafay, M., Rashwan, A., Akr, A. (2017). INDUCTION OF SPAWNING IN AFRICAN CATFISH (Clarias gariepinus ) BY USING HUMAN CHORIONIC GONADOTROPIN. Journal of Productivity and Development, 22(3), 499-510. doi: 10.21608/jpd.2019.42099
Fatma Mahsoub; Mohamed El Gaafay; Aly Rashwan; Adel Akr. "INDUCTION OF SPAWNING IN AFRICAN CATFISH (Clarias gariepinus ) BY USING HUMAN CHORIONIC GONADOTROPIN". Journal of Productivity and Development, 22, 3, 2017, 499-510. doi: 10.21608/jpd.2019.42099
Mahsoub, F., El Gaafay, M., Rashwan, A., Akr, A. (2017). 'INDUCTION OF SPAWNING IN AFRICAN CATFISH (Clarias gariepinus ) BY USING HUMAN CHORIONIC GONADOTROPIN', Journal of Productivity and Development, 22(3), pp. 499-510. doi: 10.21608/jpd.2019.42099
Mahsoub, F., El Gaafay, M., Rashwan, A., Akr, A. INDUCTION OF SPAWNING IN AFRICAN CATFISH (Clarias gariepinus ) BY USING HUMAN CHORIONIC GONADOTROPIN. Journal of Productivity and Development, 2017; 22(3): 499-510. doi: 10.21608/jpd.2019.42099
INDUCTION OF SPAWNING IN AFRICAN CATFISH (Clarias gariepinus ) BY USING HUMAN CHORIONIC GONADOTROPIN
1Department of Animal & Poultry Production, Faculty of Technology and Development, Zagazig University, Zagazig Egypt.
2Department of Fish Hatching and Reproductive Physiology, Central Laboratory for Aquaculture Research (CLAR), Abbassa Abo- Hammad, Sharkia, Egypt .
Abstract
This work was designed to study the effect of Human chorionic gonadotropin (HCG) on induction of spawning of African catfish (Clarias gariepinus ). In this experiment a total number of 90 catfish (745.8±9.2g body weight) were divided into three experimental groups (30 each) .The first group was considered as a control group and injected intramusculary with carp pituitary extract (0.3ml/kg/ b.w.).The second group was injected with HCG (1200 IU / kg body weight ). The third group was injected with both carp pituitary extract and HCG (0.15 ml/kg and 600 IU/kg body weight, respectively. The results of the present experiment showed significant differences in survival rate , fertilization rate (%), hatching rate (%), latency period, egg weight (g), egg diameter (mm) and total protein (g/dl). However, insignificant differences were detected in initial weight (g), condition factor and specific growth rate, body weight before spawning, body weight after spawning, egg number/g, gonadosomatic index, hepatosomatic index, cortisol (ug/dl) and estradiol17β(pg/m). Females treated with HCG had the highest values of fertilization rate, hatching rate, latency time and survival rate. Conclusively, the results of the present study indicated that at a level of 1200 IU from HCG was the most effective agent in inducing spawning of African catfish (Clarias gariepinus) females.
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