MAJOR METACESTODES OF SHEEP AND GOATS SLAUGHTERED AT THREE SELECTED EXPORT ABATTOIRS IN CENTRAL OROMIA: PREVALENCE, CYST CHARACTERIZATION, ASSESSMENT OF FINANCIAL LOSSES AND PUBLIC AWARENESS ABOUT METACESTODES AND THEIR RISK FACTORS
| dc.contributor.advisor | Yacob Hailu (Prof) | |
| dc.contributor.author | Geremew, Haile | |
| dc.date.accessioned | 2019-12-19T10:32:41Z | |
| dc.date.accessioned | 2023-11-30T13:38:36Z | |
| dc.date.available | 2019-12-19T10:32:41Z | |
| dc.date.available | 2023-11-30T13:38:36Z | |
| dc.date.issued | 2019-06 | |
| dc.description.abstract | In small ruminants metacestodes are important as a main cause of organs and meat condemnation contributing to a significant financial loss and they cause human diseases, especially in poor and developing countries. A cross sectional study was conducted between November 2018 and March 2019 with the aim of determining the prevalence, organ distribution, fertility rate, cyst burden and assessing financial losses and public awareness of metacestodes in sheep and goats slaughtered at selected export abattoirs in central Oromia. Routine ante-mortem and post-mortem examination were conducted for the presence of metacestodes. Post-mortem examination was conducted through visual inspection, palpation and systemic incision of each visceral organ particularly the lungs, kidneys, liver, spleen, heart, omentum, mesentery, and striated muscles. In this study, Cysticercus ovis, Cysticercus tenuicollis and hydatid cyst in small ruminants slaughtered at Bishoftu Abyssinia, Elfora and Modjo Allana abattoirs were detected with the overall prevalence of 29.2 % (224/768). Of 384 goats examined, 8 (2.1%), 44 (11.5%) and 33 (8.6%) were found to be infected with C. ovis, C. tenuicollis and hydatid cysts, respectively with over all prevalence of 85 (22.1%). Similarly a total prevalence of 139 (36.2%), 22 (5.7%), 64 (16.7%) and 53 (13.8%) were detected in 384 sheep carcass examined with similar pattern of metacestodes species. Statistically significant variation of infection rate was seen between body condition and agro ecology of animals (P<0.05). In this study, cyst count shows 436 total cysts (34 C. ovis, 239 C. tenuicollis and 163 hydatid cysts) were counted in total infected small ruminants: in sheep 247 (56.7%) and goats 189 (43.3%). Organ distribution shows the infection with C. ovis was only found in the heart, while C. tenuicollis in slaughtered sheep and goats was found mainly in the omentum. Hydatid cysts had a tendency to be located more in the lungs than liver and kidneys. The difference between infections rate of organs was significantly different (p<0.05). Similarly cyst characterization shows, fertile and viable cysts were 87 (19.9%) and 44 (10.1%) in sheep and 58 (13.3%) and 23 (5.2%), in goats respectively. In both animals, high fertile and viable cysts of C. tenuicollis were found in omentum while that of hydatid cysts were found in lungs. Cyst size measurement on a total of none calcified C. tenuicollis in goats (105) and sheep (130) shows, 32 and 28 were small, 51 and 65 medium and 22 and 37 large in size in goats and sheep respectively. Similarly, out of none calcified hydatid cysts in goats (59) and sheep (85), 15 and 20 were small, 35 and 47 medium and 9 and 18 large in size, respectively. All 34 none calcified C. ovis cysts were small in both species. In this study; an overall annual financial losses due to organ condemnation from total infected small ruminants was estimated to be: 1036505 ETB (37018USD): hydatid cysts 638265 (22795.2), C. tenuicollis 325345 (11619.4) and 72895 ETB (2603.4USD) C. ovis. Large dog population, dogs free all the time, widespread stray dogs, free access of dogs to offal, inappropriate disposal of offal, large number of free grazing goat and sheep, inadequate animal health services especially worm control are major predisposing factors which contribute to persisting of the diseases. Majority of the community in this study were at risk to contract the disease due to lack of knowledge on transmission, zoonosis, treatment and control of metacestodes. These results suggest that the occurrence of the metacestodes infection in goats and sheep is a great concern for both medical and veterinary authorities. Thus, the development of effective disease management and awareness creation are required to overcome these problems. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/123456789/20432 | |
| dc.language.iso | en | en_US |
| dc.subject | Central Oromia | en_US |
| dc.subject | Financial losses | en_US |
| dc.subject | Public awareness | en_US |
| dc.title | MAJOR METACESTODES OF SHEEP AND GOATS SLAUGHTERED AT THREE SELECTED EXPORT ABATTOIRS IN CENTRAL OROMIA: PREVALENCE, CYST CHARACTERIZATION, ASSESSMENT OF FINANCIAL LOSSES AND PUBLIC AWARENESS ABOUT METACESTODES AND THEIR RISK FACTORS | en_US |
| dc.type | Thesis | en_US |