Document Type : Original Article
Authors
1 Department of Animal Product ion, Faculty of Agriculture at Moshtohor, University of Zagazig, Banha, Qalyobia
2 Animal Production Research Institute, Ministry of Agriculture, Egypt
3 Department of Animal Product ion, Faculty of Agriculture, University of Zagazig, Zagazig
4 Department of Animal Product ion , Faculty of Agriculture , University of Ain Shame Cairo , Egypt