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seasonal occurrence of coccidia in a mixed herd of sheep and goats at nebo, northern province, south africa.the seasonal occurrence of coccidial oocysts was determined in a mixed herd of indigenous goats and cross-bred sheep at nebo, northern province, south africa. the herd of c. 30 sheep was housed with c. 70 goats in 1 camp. over a period of 14 months, 114 faecal specimens were collected from sheep and 369 from goats and the number of oocysts per gram of faeces (opg) determined. the mean opg value for the adult sheep (1187.9) was significantly (p = 0.035) lower than the mean opg value for the adult ...19989850512
anthelmintic resistance in south africa: surveys indicate an extremely serious situation in sheep and goat farming.surveys to determine the prevalence and degree of resistance of haemonchus spp. of sheep and goats to the available anthelmintics in south africa indicate that small ruminant production is entering a crisis situation. three surveys employing the faecal egg count reduction (fecr) test to determine resistance were conducted in some of the main sheep-producing areas in the summer rainfall region of south africa, where h. contortus is the principal worm species in sheep. after analyzing the data rec ...199910689700
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