Bakunzi F R, Thwane S N, Motsei L E, Dzoma B M
Centre for Animal Health Studies, North West University, Mafikeng, Private Bag X2046, Mmabatho, 2735 South Africa.
J S Afr Vet Assoc. 2010 Sep;81(3):148-50. doi: 10.4102/jsava.v81i3.137.
Diversity and seasonal occurrence of coccidia in a communally reared mixed flock of sheep and goats at Mafikeng, North West Province, South Africa, was determined between March 2008 and February 2009. Faecal specimens were collected directly from the rectum of the animals and the number of oocysts per gram of faeces (opg) determined. The mean monthly opg for goats was significantly higher than that for sheep. Higher oocyst counts were observed during the hot, rainy season than during the cold, dry season. The highest mean values for both the sheep (862.5 opg) and goats (1200 opg) were recorded during March. Six species (Eimeria crandallis, E. bakuensis, E. weybridgensis, E. ahsata, E. intricata, and E. ovinoidalis) were recovered from sheep, with E. crandallis and E. bakuensis occurring most frequently. The last 2 species, together with E. ahsata, are considered among the most pathogenic species in sheep. In goats, 7 species (E. arloingi, E. jolchijevi, E. caprina, E. alijevi, E. caprovina, E. christenseni and E. hirci) were recovered, with E. arloingi and E. jolchijevi occurring most frequently. Up to 5 Eimeria species were recovered from individual specimens in goats while up to 4 were recovered in sheep. No cross-infections between goats and sheep were recorded and no clinical coccidiosis was noted during the study. It is increasingly becoming evident that the pathogenic E. arloingi is one of the most commonly occurring Eimeria species in goats in South Africa.
2008年3月至2009年2月期间，对南非西北省马菲金一个共同饲养绵羊和山羊的混合羊群中球虫的多样性和季节性出现情况进行了测定。粪便样本直接从动物直肠采集，并测定每克粪便中的卵囊数（opg）。山羊的月平均opg显著高于绵羊。在炎热多雨季节观察到的卵囊计数高于寒冷干燥季节。绵羊（862.5 opg）和山羊（1200 opg）的最高平均值均记录在3月。从绵羊中分离出6种球虫（克兰德艾美耳球虫、巴库艾美耳球虫、韦布里奇艾美耳球虫、阿萨塔艾美耳球虫、复杂艾美耳球虫和卵形艾美耳球虫），其中克兰德艾美耳球虫和巴库艾美耳球虫出现频率最高。后两种球虫与阿萨塔艾美耳球虫一起被认为是绵羊中最具致病性的球虫种类。在山羊中，分离出7种球虫（阿氏艾美耳球虫、约氏艾美耳球虫、山羊艾美耳球虫、阿里耶维艾美耳球虫、卡普罗维纳艾美耳球虫、克里斯滕森艾美耳球虫和希尔西艾美耳球虫），其中阿氏艾美耳球虫和约氏艾美耳球虫出现频率最高。在山羊个体样本中最多分离出5种艾美耳球虫，而在绵羊中最多分离出4种。研究期间未记录到山羊和绵羊之间的交叉感染情况，也未发现临床球虫病。越来越明显的是，致病性阿氏艾美耳球虫是南非山羊中最常见的艾美耳球虫种类之一。
