tailieunhanh - Báo cáo khoa học: " A comparative study of gastrointestinal parasites between ranched and free ranging Burchell's zebra (Equus burchelli antiquorum) in Isiolo district, Kenya"

Tuyển tập các báo cáo nghiên cứu khoa học quốc tế về bệnh thú y đề tài: A comparative study of gastrointestinal parasites between ranched and free ranging Burchell's zebra (Equus burchelli antiquorum) in Isiolo district, Kenya | J. Vet. Sci. 2004 5 3 215-220 JOURNAL OF Veterinary Science A comparative study of gastrointestinal parasites between ranched and free ranging Burchell s zebra Equus burchelli antiquorum in Isiolo district Kenya Elizabeth N. Wambwa1 . Ogara2 Dennis Mudakha1 lKenya Wildlife Service Veterinary Unit P O. Box 42076 Nairobi Kenya University of Nairobi Department of Public Health Pharmacology and Toxicology P. O. Box 29053 Nairobi Kenya Parasites were collected from 20 Burchell s zebra Equus burchelli antiquorum from Isiolo district Kenya. 10 were ranched animals from the Lewa Downs Ranch and 10 free ranging from the areas adjacent to the ranch to the north. The animals were culled from 4th to 18th June 1995. The gastrointestinal tract was removed from the carcass and separated as stomach small and large intestines and searched for parasites. The abdominal cavity was scrutinized for Setaria species. The parasites were identified to genus and in some cases species level. All animals were infected with at least three genera of parasites of which at least one genus was a nematode. A total of 10 genera representing eight families were recovered from the two groups. These included six nematode families Strongylidae Atractidae Oxyuridae Spiruridae Setariidae and Ascaridae one cestode family Anoplocephalidae and one family of the larvae of Gasterophilus bot flies Gasterophilidae. The most prevalent families were Atractidae 100 and Gasterophilidae 100 . The principle nematode genera was Crossocephalus whose total burden plus or minus the standard deviation was 3 471 129 1 352 922. Setaria species were recovered from the abdominal cavity of 45 of all the animals examined. The overall total worm burden was higher in the free ranging zebra 2 743 410 849 604 than the ranched zebra 787 669 246 006. The range of individual genera varied from 0 to 269 225 in the free ranging group which was higher than 0 to 77 890 in the ranched animals. From statistical analysis no significant .