The rice field eel Monopterus albus is native to sub-tropical and tropical Asia, and is widely distributed in many countries from India to China, Japan, Malaysia, Indonesia and Bangladesh. Reproductive biology characteristics of this species begin to be studied in the 1960s, and at the first time, it studied about respiratory astrodynamics to reproductive physiology. | D Journal of Agricultural Science and Technology A and B & Hue University Journal of Science 7 (2017) 85-92 doi: DAVID PUBLISHING Effects of Foods on Maturity and Spawning Induction Methods on Ovulation of Rice Field Eel Monopterus albus (Zuiew, 1793) in Thua Thien Hue Province, Vietnam Tran Vinh Phuong1, Nguyen Van Khanh1, Pham Thi Hai Yen2, Vo Dieu2 and Nguyen Van Huy2 1. Institute of Biotechnology, Hue University, Phu Thuong, Phu Vang, Thua Thien Hue 530000, Vietnam 2. Faculty of Fisheries, University of Agriculture and Forestry, Hue University, 102 Phung Hung Street, Hue 530000, Vietnam Abstract: Adult rice field eels with ± g body weight corresponding to ± cm in length were maturity cultured in a 5 m2 cement tank without mud for three months with density 30 eels/m2. Eel broodstocks were fed with three types of food including: sea fish (T1), commercial pellet food (T2) and mixed food—50% sea fish and 50% commercial pellet food (T3). Result showed that the maximum gonadosomatic index (GSI) of female eels fed by sea fish ( ± ) was higher than both commercial pellet food ( ± ) and mixed food ( ± ) (P ). Maturity rate of female fed by sea fish ( ± ) was higher than commercial pellet food ( ± ) (P ). Then. the eels were induced for spawning with two kinds of hormones, including T1: human chorionic ganadotropin (HCG) at 1,500 IU/kg, T2: luteinzing hormone-releasing hormone (LHRH-a) at 150 µg/kg and domperidon 10 mg/kg, and T3: control without hormone. The results of spawning induction methods showed that the reproduction rate of female eels induced by LHRH-a and HCG hormones were higher than that by natural reproduction method (P ). The gonadosomatic index of male eels in T1, T2 and T3 after three months was ± , ± and ± , respectively (P > ). The study shows that female rice field eel fed with sea fish is .
