“Effect of Genetic and Non-Genetic Factors on Some Productive and Reproductive Traits of Holstein Cows in the Middle of Iraq”. Tikrit Journal of Veterinary Science 3, no. 1 (June 1, 2024): 81–93. Accessed October 22, 2025. https://tjvs.tu.edu.iq/index.php/tjvs/article/view/74.