Effects of Ovaprim, Pituitary Gland Extract and Human Chorionic Gonadotropin on Testosterone, 11-Ketotestosterone,and 17β-Estradiol hormones of catfish (Clarias gariepinus)

Document Type : Original Article

Authors

1 hatchery and fish physiology department, central laboratory for aquaculture research, agriculture research centre, Egypt.

2 Hatchery and fish physiology department, central laboratory for aquaculture research, agriculture research centre

Abstract

This study closely inspected the effects of ovaprim, pituitary gland extract, and human chorionic gonadotropin on 11-ketotestosterone, and 17β-estradiol hormones. Females and males (T1, T2, and T3) were injected with Ova Prim as 0.5 ml/kg of fish, pituitary gland extract of catfish, and Human Chorionic Gonadotropin (HCG), respectively. Results showed that female gonadosomatic index of the spring season (10.45 ±0.35%) were significantly increased compared to other seasons: autumn followed by summer and winter seasons (0.82 ±0.06%). Results showed that T1 was better than T2, but T2 was better than T3 in all reproductive performance parameters. Plasma 17β-estradiol (ng/ml) in female catfish throughout 12 hours after injection of stimulating hormones ranged from 2.15 ng/ml in T1 to 1.65 ng/ml in T3 whereas testosterone in female of catfish throughout 12 hours were ranged from (0.031 ng/ml) in T1 to (0.036 ng/ml) in T3. Also, plasma 11-ketotestosterone (ng/ml) in male of catfish was recorded in T1 (0.154 ng/ml) followed by T2 (0.107 ng/ml) and lowest level in T3 (0.083 ng/ml) but plasma testosterone (ng/ml) in male was recorded in T1 (0.225 ng/ml) followed by T2 (0.189 ng/ml) and lowest level in T3 (0.143 ng/ml).

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Egyptian Journal for Aquaculture
Volume 10, Issue 4
December 2020
Pages 1-16

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