Research article · Global Journal of Biosciences and Biotechnology

Impact of different level of freeze-dried bull testes on growth performance and masculinization of Nile tilapia ( Oreochromis niloticus ) Nirwana

K. M. Seazar, Ayi Yustiati, Iskandar, Masyamsir

• 1 Department of Meat Production, Faculty of Animal production, University of Khartoum-Sudan,P.O BOX 123 Khartoum North-Sudan.