Protozoa involved in butyric rather than lactic fermentative pattern during latent acidosis in sheep Ludovic Brossard, Cécile Martin, Frédérique Chaucheyras-Durand and the late Brigitte Michalet-Doreau Reprod. Nutr. Dev., 44 3 (2004) 195-206 DOI: 10.1051/rnd:2004023