KAMEL, S. A.; JAMEEL, Y. J. Effect of threonine and zinc alone or in combination on immunity and intestinal morphology of broiler chickens. International journal of health sciences, [S. l.], v. 6, n. S2, p. 14377–14388, 2022. DOI: 10.53730/ijhs.v6nS2.8769. Disponível em: https://sciencescholar.us/journal/index.php/ijhs/article/view/8769. Acesso em: 19 may. 2026.