| prevalence of coccidia in pigs in zimbabwe. | faecal specimens from 162 piglets, aged 1-5 months, from four farms around harare were examined for coccidia during 1989-1990. oocyst count per gram (opg) of faeces was determined by the mcmaster technique. identification of eimeria species was done after sporulation of oocysts in 2.5% potassium dichromate solution. measurements of sporulated oocysts were taken from 20 positive cases by using calibrated eye micrometer. overall incidence was 25.3% (41/162) varying between 15 and 39.5% at differen ... | 1992 | 1561754 |