1. Department of Zoology , Abdul Wali Khan University Mardan , Pakistan
2. College of Veterinary Sciences and Animal Husbandry , Abdul Wali Khan University Mardan , Pakistan
3. College of Animal Sciences and Technology , China Agriculture University Beijing , China
4. Mastitis Section, Veterinary research institute Peshawar , Pakistan
5. Department of Livestock production , The University of Agriculture Peshawar , Pakistan