Ihsanullah, Muhammad Subhan Qureshi, Sohail Akhtar and Syed Muhammad Suhail, 2020. Seasonal Stress Affects Reproductive and Lactation Traits in Dairy Cattle with Various Levels of Exotic Blood and Parities under Subtropical Condition. Pakistan J. Zool., 52: 147-155. DOI: https://dx.doi.org/10.17582/journal.pjz/2020.52.1.147.155