Nikolova, Tanya. “Testing the Effect of Supplementing With Oregano Extract During Pregnancy on the Reproductive Performance of Sows”. Bulgarian Journal of Animal Husbandry 63, no. 1 (February 26, 2026): 21–30. Accessed October 20, 2026. https://agriacad.eu/ojs/index.php/bjah/article/view/6672.