Estudo clínico-epidemiológico e bacteriológico da mastite em ovelhas da raça Santa Inês no agreste meridional do Estado de Pernambuco

• Autor(a) principal: OLIVEIRA, Luiz Gustavo Lopes de
• Data de Publicação: 2009
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRPE
• Texto Completo: http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5770
• topic: Epidemiologia; Bacteriologia; Mastite; Ovino; CIENCIAS AGRARIAS::MEDICINA VETERINARIA

This paper has as an aim to accomplish a clinical epidemiological and bacteriological study of clinical mastitis in Santa Inês breed ewes in Pernambuco´s Wasteland Southern Region. The work was accomplished with 31 herds located in 15 cities. A total of 135 primiparous and multiparous ewes in different lactation stages were used. The clinical examination of the mammary gland was performed before the analysis of lacteal secretion and then the clinical mastitis cases were selected. In parallel, a questionnaire was applied over the main characteristics of the hygienic-sanitarium handling of the flock, as well as an anamnese of the studied sheep. From the 135 sheep under study 21 (15,5%) presented alterations in the gland. Of the mammary halves examined, it was verified that eight were totally fibrous and 18 presented alterations in the gland examination and/or in the analysis of the milky secretion, characterizing a picture of clinical mastitis. The mammary glands affected presented as more frequent signs fibrosis, asymmetry and/or alterations of the lacteal secretion. The hyperacute gangrenous mastitis was observed in two animals (12,5%). In over half of the sheep diagnosed with clinical mastitis (56,25%), the disease was diagnosed at the initial stage of lactation. Mastitis was observed in 48,4% of the studied herd, however the infection occurred most of the time at the post partum and weaning after three moths of age. Most of the sheep had three or more lactations and lambed only one product. Out of the 18 samples bacteriologically analyzed, o Staphylococcus aureus (38,88%) was the most frequent aetiological agent evidenced followed by coagulase-negative Staphylococcus (33,33%), Escherichia coli (5,56%), Enterobacter cloaceae (5,56%) and Pseudomonas spp (5,56%). All the stumps tested in vitro were sensitive to enrofloxacine, florfenicol, sulfazotrim and tetraciclin. Mastitis in sheep represents, apparently, a serious problem, there for there should be adopted hygienic-sanitary measures and of handling, seeking to minimize the economical impact characterized, almost in its totality, by the functional loss of the mammary gland affected.