Barham M, Stützer H, Karanis P, Latif B M, Neiss W F
Institut I für Anatomie, Universität zu Köln, D-50924 Köln, Germany
Parasitology. 2005 Feb;130(Pt 2):151-6. doi: 10.1017/s0031182004006134.
We investigated the prevalence of sarcocystosis in 826 goats slaughtered in the winter season from November to April in northern Iraq. The prevalence of macrocysts was on average 34%, with only 20% infected animals in November, but 46% in February. The infection rate in 1-, 3- and 6-year-old goats was 4%, 48%, and 83%, respectively. The highest specificity of infection was in the oesophagus (99%) and the lowest in the diaphragm (3%). Grossly, we identified 2 forms of macroscopic sarcocysts, fat and thin, with different morphological characteristics. The prevalence of microcysts was 97% and no effects of age, sex and seasonal variations were observed. Development of microcysts in the small intestine of dogs and cats has also been investigated. The pre-patent period in experimentally infected dogs was 12-14 days and the patent period lasted 64-66 days. A dog shed about 155 million sporocysts, but no sporocysts were shed by cats that had been fed the same infected tissues, thus identifying the microcysts as Sarcocystis capracanis.
我们调查了伊拉克北部11月至4月冬季宰杀的826只山羊的肉孢子虫病患病率。大囊的患病率平均为34%，11月仅有20%的动物感染，但2月为46%。1岁、3岁和6岁山羊的感染率分别为4%、48%和83%。感染的最高特异性出现在食管（99%），最低出现在横膈膜（3%）。肉眼可见，我们鉴定出两种形态特征不同的大囊形式，即脂肪型和瘦型。微囊的患病率为97%，未观察到年龄、性别和季节变化的影响。还对犬猫小肠中微囊的发育进行了研究。实验感染犬的潜隐期为12 - 14天，排虫期持续64 - 66天。一只犬排出约1.55亿个孢子囊，但喂食相同感染组织的猫未排出孢子囊，从而确定微囊为山羊肉孢子虫。
