Extensive countrywide field investigation of subclinical mastitis in sheep in Greece.

摘要: The objectives of this work were (1) to investigate prevalence subclinical mastitis, (2) identify etiological agents involved, and (3) study factors potentially predisposing ewes mastitis. Milk samples collected from 2,198 in 111 farms with a total population 35,925 ewes, all 13 administrative regions Greece, for bacteriological cytological examination. Prevalence mastitis was 0.260. Main staphylococci (Staphylococcus aureus coagulase-negative species), which accounted 0.699 isolates recovered; staphylococcal 0.191. In multivariable mixed-effects analysis, the primary factor found be associated increased management system practiced flocks (flocks under semi-intensive had highest prevalence). Other that included model stage lactation period (ewes 2nd month postpartum showed prevalence) application postmilking teat dipping. contrast, measures taken at end (e.g., intramammary administration antimicrobial agents) not have an effect on results confirmed significance as frequent problem agent. findings confirm multifactorial nature indicate its control should rely many approaches.