Ritter L A, Xue J, Dial G D, Morrison R B, Marsh W E
Department of Clinical and Population Sciences, College of Veterinary Medicine, University of Minnesota, St Paul 55108, USA.
J Am Vet Med Assoc. 1999 Feb 15;214(4):525-8.
To determine prevalence of foot lesions, dermatitis, shoulder lesions, mammary gland abnormalities, and visceral lesions, and body condition scores among culled female swine at slaughter.
Observational study.
Culled gilts and sows killed during a 1-week period at a Midwest slaughterhouse.
Carcasses were examined, and lesions were recorded. Body condition was scored on the basis of standard criteria.
58.9% (1,029/1,747) of the carcasses had foot lesions, 67.3% (1,178/1,751) had dermatitis, and 4.6% (80/1,751) had shoulder lesions. Body condition score was significantly associated with detection of dermatitis and shoulder lesions. Mean +/- SE number of teats (n = 1,432 carcasses) was 13.86 +/- 0.02. Mean numbers of normal-appearing teats in the left and right mammary chains were 6.57 +/- 0.02 and 6.58 +/- 0.02, respectively. Feet from 48% (688/1,433) of the carcasses were condemned. Visceral lesions were found in 48.8% (624/1,278) of the carcasses; of the carcasses with lesions, 412 (66%) had liver spots, and 268 (42.9%) had pneumonia.
Lesions that potentially could have adversely affected production were found in a large percentage of culled gilts and sows at slaughter. Knowledge of lesions commonly found at slaughter may help direct changes in herd health programs.
确定屠宰时被淘汰的雌性猪的足部病变、皮炎、肩部病变、乳腺异常和内脏病变的患病率以及体况评分。
观察性研究。
在中西部一家屠宰场1周内被宰杀的淘汰后备母猪和经产母猪。
检查胴体并记录病变情况。根据标准标准对体况进行评分。
58.9%（1029/1747）的胴体有足部病变，67.3%（1178/1751）有皮炎，4.6%（80/1751）有肩部病变。体况评分与皮炎和肩部病变的检出显著相关。乳头平均数量（±标准误，n = 1432头胴体）为13.86±0.02个。左右乳腺链中外观正常的乳头平均数量分别为6.57±0.02个和6.58±0.02个。48%（688/1433）的胴体足部被判定不合格。48.8%（624/1278）的胴体发现有内脏病变；在有病变的胴体中，412头（66%）有肝斑，268头（42.9%）有肺炎。
在屠宰时被淘汰的后备母猪和经产母猪中，很大比例存在可能对生产产生不利影响的病变。了解屠宰时常见的病变可能有助于指导畜群健康计划的调整。
