Apparent total tract digestibility, performance, and methane emissions in pigs maintained under different sanitary conditions and supplemented with antibiotic or Bacillus subtilis - Silva, N. V. P; Dadalt, Julio Cezar; Budiño, Fábio Enrique Lemos; Gameiro, Augusto Hauber; Trindade Neto, Messias Alves da (Canadian Journal of Animal Science, 2017)