Ducks are considered the second common strains of poultry in the world. In Egypt, more attention is focused lately on increasing meat production, particularly ducks which are considered the easiest domestic poultry (El-Soukkary, et al., 2005). Sudanese breed is considered a local breed and more favorable to the Egyptian consumer and more heat tolerant as compared to Muscovy duck (foreign ... Read more

Abstract: The present study was carried out on 82 samples of claries gariepinus, 72 Mature female and 10 immature females. About 6 fishes of mature female catfish nearly 600- 700 gm in weight and 40-45 cm in length were collected monthly throughout the year from the Nile River, crossing Sohag city in Egypt, during the year 2011-2012 to elucidate the ... Read more