1. Animal Science Improvement Research Department, Agricultural and Natural Resources Research and Education Center, Safiabad AREEO, Dezful, Iran;
2. Faculty of Agriculture, Department of Animal Science, Ferdowsi University of Mashhad, Mashhad, Iran;
3. Department of Animal and Poultry Science, College of Aburaihan, University of Tehran, Tehran, Iran;
4. Research Institute of Animal Science, Tehran, Iran