Hessing M J, Geudeke M J, Scheepens C J, Tielen M J, Schouten W G, Wiepkema P R
Vakgroep Veehouderij, sectie Ethologie, Landbouwuniversiteit Wageningen.
Tijdschr Diergeneeskd. 1992;117(15-16):445-50.
Morphological investigations of slaughterhouse material revealed a prevalence of 63% of the sows (n = 224) and 36% of the slaughter pigs (n = 209) with mucosal lesions in the pars oesophagea. The mucosal lesions were composed of severe hyperkeratosis, erosions or ulceration. Microscopic examination showed that hyperkeratosis is attended with parakeratosis. From experiments in a climate controlled pighouse it could be concluded that mixing of unfamiliar pigs resulted in higher prevalences of gastric lesions as compared with keeping the litter together until the end of the experiment (farrow to finish system). There was no relation between gastric lesions and climatic stressors or between gastric lesions and growth and sex of the pigs. When pigs, according to social ranking, were divided in high, middle and low rank it showed that more pigs in the middle-ranked group had gastric lesions. The serum pepsinogen was not related with gastric lesions. There was a tendency that plasma cortisol increased with severity of gastric lesions. There was a strong significant 'litter-effect', which can indicate a genetic predisposition for the development of gastric lesions. Maybe that the presence of mucosal lesions in the pars oesophagea can be used as an objective indicator for welfare in intensive pig husbandry.
对屠宰场材料的形态学研究表明，63%的母猪（n = 224）和36%的屠宰猪（n = 209）在食管部出现黏膜损伤。黏膜损伤包括严重的角化过度、糜烂或溃疡。显微镜检查显示，角化过度伴有不全角化。通过在气候控制的养猪场进行的实验可以得出结论，与将同窝仔猪饲养至实验结束（从出生到出栏系统）相比，混养陌生猪会导致胃部损伤的发生率更高。胃部损伤与气候应激源之间、胃部损伤与猪的生长及性别之间均无关联。根据社会等级将猪分为高、中、低等级后发现，中等等级组中有更多猪出现胃部损伤。血清胃蛋白酶原与胃部损伤无关。血浆皮质醇有随胃部损伤严重程度增加的趋势。存在强烈的显著“窝效应”，这可能表明胃部损伤的发生存在遗传易感性。也许食管部黏膜损伤的存在可作为集约化养猪中福利状况的一个客观指标。
