Estimated of production and costs functions of broiler breeding farms in the province of Dhamar. Yemeni Journal of Agriculture & Veterinary Sciences, [S. l.], v. 1, n. 1, 2021. DOI: 10.70022/yjavs.v1i1.17. Disponível em: https://journal.tu.edu.ye/index.php/yjavs/article/view/17. Acesso em: 1 may. 2026.