Peppermint (Mentha piperita Huds.) and basil (Ocimum basilicum L.) etheric-oil by-products as roughages for sheep feeding D. Pavlov, A. Ilchev, D. Djouvinov and RE ØrskovAnn. Zootech., 44 Suppl. 1 (1995) 199DOI: https://doi.org/10.1051/animres:199505167