Abstract：
Helminth infections of swine regain clinical and economic importance due to the increasing demand for pork from extensive husbandry. Infections with Trichuris suis in pigs can lead to wasting and diarrhoea. This was demonstrated by a case of clinical trichurosis on a conventional fattening farm, where pigs were kept on pasture. While all pre-fattening pigs, which had not been on the pasture yet, had a good body condition and firm faeces, diarrhoea and poor body condition were observed in approximately half of the fattening pigs kept on pasture. Rectally collected faecal samples from all animals were investigated using faecal flotation. High numbers of T. suis eggs were detected in 17 out of 32 faecal samples, while all samples from pre-fattening pigs were negative. The highest number of eggs per gram of faeces was 778,000. Two out of three environmental samples were also positive for T. suis in faecal flotation. This case demonstrates that T. suis must be considered as an enteropathogen in pigs kept on pasture, as favourable environmental conditions, and the lack of removal of faeces from a pasture can lead to the accumulation of large numbers of infective eggs in the pigs\' surroundings.
摘要：
由于广泛的畜牧业对猪肉的需求不断增加，猪的蠕虫感染重新获得了临床和经济意义。猪感染猪鞭虫可导致消瘦和腹泻。常规育肥场的临床毛虫病病例证明了这一点，猪被放在牧场上。虽然所有的预育肥猪，还没有在牧场上，有良好的身体状况和坚硬的粪便，在牧场上饲养的育肥猪中约有一半出现腹泻和身体状况不佳。使用粪便浮选研究从所有动物中直接收集的粪便样品。在32个粪便样本中的17个中检测到大量猪链球菌卵，而所有来自预育肥猪的样本均为阴性。每克粪便的鸡蛋数量最高，为778,000。在粪便浮选中，三个环境样品中的两个也对猪链球菌呈阳性。这个案例表明猪链球菌必须被认为是饲养在牧场上的猪的肠病原体，作为有利的环境条件，缺乏从牧场上清除粪便会导致猪周围大量感染卵的积累。
