Intraspecific hybridization studies in three strains of Clarias gariepinus

Intraspecific hybridization studies were carried out in three strains of Clarias gariepinus obtained from three ecological zones in Nigeria: rainforest; (Onitsha strain), Guinea savanna, Kainji strain) and Montanne vegetation, (Jos strain) with the aim of improving the growth performance of the species. Nine genetic mating combinations were generated from the three strains and were successfully induced under controlled hatchery conditions. Indoor and outdoor growth parameters were monitored. The 19 days growth indoors showed significant difference (P<O.05) in weight gain. Highest weight gain (2.76g) was obtained in Jos parental strain and cross involving female Jos and male Kainji, while the least was recorded in female Kainji and male Onitsha (0.062g). The 50 days outdoor growth performance also showed significant difference between the genetic mating combinations. Maximum weight gain (464.57g) was observed in female Kainji and male Onitsha, while female Jos and male Kainji gave 263.94g weight gain. There was no significant difference (P>0.05) in length in both indoor and outdoor rearing. Based on this study, the cross-involving female Kainji and male Onitsha is recommended for fingerling production of Clarias gariepinus.

Bibliographic Details

Main Authors:	Yisa, M., Lamai, S.L., Olufeagba, S.O., Tsadu, S.M.
Format:	conference_item biblioteca
Language:	English
Published:	Fisheries Society of Nigeria 2007
Subjects:	Aquaculture, Fisheries, Clarias gariepinus, Nigeria, freshwater environment, Hybridization, Breeding, Genetics, Hybrid culture,
Online Access:	http://hdl.handle.net/1834/37761
Tags:	Add Tag No Tags, Be the first to tag this record!