OBJECTIVE: To determine prevalence of udder @entity2419 in a dairy herd that was experiencing an outbreak of @entity1908 . DESIGN: Clinical survey. ANIMALS: 1,597 Holstein @entity291 and late-gestation heifers. PROCEDURE: Animals were examined for udder @entity2419 and for @entity272 consistent with sarcoptic or chorioptic mange. Skin scrapings were collected from 56 @entity291 and examined for ectoparasites. The herd was revisited 1 year later, and prevalences of udder @entity2419 and lesions consistent with mange were determined in 506 @entity291 . RESULTS: Of the 1,597 @entity291 examined, 280 (18%) had udder @entity2419 , and 1,397 (87.5%) had lesions consistent with mange. In 43 of 56 (77%) @entity291 , skin scrapings revealed Sarcoptes mites. Udder @entity2419 was significantly more common in older than in younger @entity291 . In first-lactation @entity291 , udder @entity2419 was less common during the first 4 months of lactation than in the later stages of lactation, but udder @entity2419 was identified in @entity291 in all stages of lactation and in @entity291 that were not lactating. The herd was treated with eprinomectin to control mites, and prevalence of lesions consistent with mange 1 year later was only 2.8%. However, prevalence of udder @entity2419 was still 12%. CONCLUSIONS AND CLINICAL RELEVANCE: Results suggest that @entity291 in any stage of lactation and @entity291 that are not lactating can have udder @entity2419 but that lesions are more common in older @entity291 . Control of @entity1908 was accompanied by a moderate reduction in the prevalence of udder @entity2419 but did not eliminate the condition.

Udder XXXX and @entity1908 in a dairy herd.

@entity2419 :: ('MESH:D002972', 'Disease') :: ['cleft dermatitis'] @entity291 :: ('9913', 'Species') :: ['cows', 'cattle'] @entity1908 :: ('MESH:D012532', 'Disease') :: ['sarcoptic mange'] @entity272 :: ('MESH:D012871', 'Disease') :: ['skin lesions']
@entity2419 :: (MESH:D002972,Disease) :: ['cleft dermatitis']
