MALIK, A. A.; FAZILI, M. R.; KHATUN, A. Levels of Serum Nitric Oxide and Ascorbic Acid in Early Pregnant and Non-pregnant Sheep During Breeding Season. International Journal of Livestock Research, India, v. 11, n. 8, p. 28–32, 2021. DOI: 10.5455/ijlr.20210116093959 . Disponível em: https://ijlr.org/ojs_journal/index.php/ijlr/article/view/442. Acesso em: 30 may. 2026.