Karakolev R, Koynarski T, Petrova R, Petrova-Tsenin P. INFLUENCE OF THE IMMUNOMODULATOR "AVIGEN" ON THE NATURAL RESISTANCE OF ROSS HYBRID BROILER. Tradit. Mod. Vet. Med. [Internet]. 2021 Nov. 27 [cited 2026 Aug. 6];6(2):95-103. Available from: https://scij-tmvm.com/index.php/pub/article/view/160