JASSIM , Suaad Shnawa; HAWA, Hamza Mizail. Effect of interleukin -6 level on reproductive performance in Holstein cows . Kufa Journal for Agricultural Sciences, Kufa, Najaf, IRAQ, v. 15, n. 2, p. 28–32, 2023. DOI: 10.36077/kjas/2023/v15i2.3860. Disponível em: https://journal.uokufa.edu.iq/index.php/kjas/article/view/3860. Acesso em: 14 jul. 2026.