| nematode parasites of goats and sheep in the imo state, nigeria. | field surveys on the occurrence of intestinal nematodes in 335 goats and 117 sheep in the imo state of nigeria showed an infection density of 78 and 77%, respectively. 8 nematode species were differentiated in goats, and 10 in sheep. among these, oesophagostomum columbianum (in goats) and o. venulosum (in sheep) prevailed. relationships were found between the age of the animals and the nematode species as well as the season and the rate of infestation. | 1987 | 3502244 |