Study of potential environmental factors predisposing ewes to subclinical mastitis in Greece |
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| Institution: | 1. Veterinary Faculty, University of Thessaly, 43100 Karditsa, Greece;2. Institute of Veterinary Science, University of Liverpool, Neston, South Wirral, CH64 7TE, United Kingdom;3. University Hospital of Larissa, 41110 Larissa, Greece;1. Veterinary Faculty, University of Thessaly, 43100 Karditsa, Greece;2. University Hospital of Larissa, 41110 Larissa, Greece;3. Department of Animal Production, Technological Educational Institute of Larissa, 41110 Larissa, Greece;1. Departamento de Medicina Veterinária, Escola de Ciências e Tecnologia, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal;2. ICAAM-Instituto de Ciências Agrárias e Ambientais Mediterrânicas, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal;3. IIFA-Instituto de Investigação e Formação Avançada, Universidade de Évora, Ap. 94, 7006-554 Évora, Portugal;1. Sydney School of Veterinary Science, The University of Sydney, Camden, NSW, Australia;2. Murdoch University, College of Veterinary Medicine, School of Veterinary and Life Sciences, 90 South Street, Western Australia, 6150, Australia;1. Department of Ruminant Production, IRTA (Institut de Recerca i Tecnologia Agroalimentàries), Research Group on Production Efficiency of Ruminants, Torre Marimon, 08140, Caldes de Montbui, Barcelona, Spain;2. ICREA (Institució Catalana de Recerca i Estudis Avançats), 08010 Barcelona, Barcelona, Spain |
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| Abstract: | Objectives of the work presented herewith were to investigate association of prevalence of subclinical mastitis with environmental (climatic and topographic) factors and to identify factors potentially predisposing ewes to the disease. Milk samples were collected from 2198 sheep in 111 farms, in all 13 administrative regions of Greece, for bacteriological and cytological examination. Data on farm location were collected in the field using hand-held Global Positioning System Garmin units. The geo-references were resolved to specific farm level. Prevalence of subclinical mastitis was 0.260. Main aetiological agents were staphylococci (Staphylococcus aureus and coagulase-negative species), which accounted for 0.699 of all isolates recovered. In a multivariable mixed-effects analysis, the two environmental variables found to be associated with increased prevalence of subclinical mastitis were the minimum temperature of coldest month (coefficient: -0.084 ± 0.033, P = 0.014) and the mean temperature for 30 days prior to sampling date (coefficient: 0.031±0.014, P = 0.029). |
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| Keywords: | Environment GIS Mastitis Predisposing factors Sheep Subclinical Temperature Wind |
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