Resumen de Estudio epidemiológico sobre lesiones mandibulares ovinas en campo y matadero

M. Ruiz de Arcaute, Luis Miguel Ferrer Mayayo, M.D. Lacasta, J.P. Bueso, Marta Borobia Frías, M. de las Heras, M. M. Ortega, José María González Saínz, A. Gartziandia, Aurora Ortín Pérez, C. Marca, Araceli Loste Montoya, J.J. Ramos

• This work describes the prevalence of ovine mandibular lesions and its profile in field conditions and slaughterhouse. The prevalence of mandibular lesions in commercially exploited sheep is about 5%, whereas rates reach 15% in those old animals which go to slaughterhouse. Both studies, for slaughtered and farm animals, show that the profile of mandibular lesions is very similar according to the mandibular body involvement. As regards the location, this lesion was found in the distal part of mandibular bodies in almost 80% of the sheep, 93% of the animals had the lesion closed and in the 57.30% of the sheep the lesion covered a wider area. A lack of any of the dental pieces was found in 57% of the whole group studied. According to the degree of the face alteration, a minor alteration was found in the 53.50% of the animals, and 78,60% showed an alteration in the regional lymph nodes. Microbiological studies revealed more than forty different germs implicated in the lesions studied, but Actinomyces spp was not found in any of them. Most of the germs resulted mixed cultures and the more frequently isolated germs in pure cultures were Streptococcus spp, Pseudomonas spp, E. coli, Arcanobacterium pyogenes and Klebsiella spp.