Research Note: Antimicrobial resistance profile of Enterococcus spp. isolated from the eggshell of laying hens submitted to pharmacological treatment oleh I.P. Lanza, G.R. Silva, L.D.M. Menezes, D.C.S. Assis, H.C.P. Figueiredo, A.M.Q. Lana, L.J.C. Lara, T.C. Figueiredo, M.R. Souza, S.V. Cançado