Study on the prevalence of cystic hydatidosis and its economic significance in cattle slaughtered at Hawassa Municipal abattoir,Ethiopia |
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| Authors: | Regassa Feyesa Molla Alemante Bekele Jemere |
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| Institution: | (1) College of Agriculture and Veterinary Medicine, Jimma University, Jimma, Ethiopia;(2) Faculty of Veterinary Medicine, Hawassa University, Hawassa, Ethiopia |
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| Abstract: | A cross-sectional study was conducted from December 2008 to March 2009 to assess the status of cystic hydatidosis in cattle
slaughtered at Hawassa Municipal abattoir. Out of the total 632 cattle examined visually and manually (palpation and incision),
333 (52.69%) were found harboring hydatid cysts. A significantly higher infection was detected in older cattle (P < 0.05, χ
2 = 4.36) than young. Regarding body condition score, no significant variation (P > 0.05, χ
2 = 2.148) was observed as the prevalence was 54.55% for lean cattle followed by medium (53.83%) and fat (46.88%). Of the total
333 infected, 123 (36.9%) had hydatid cysts only in the lung, 23 (6.9%) in the liver, 12 (3.6%) in the spleen, five (1.5%)
in the heart, and three (0.9%) in the kidney while the rest 167 (50.2%) had multiple organ infections. Of the 530 viscera
harboring hydatid cysts, the highest (52.83%) was lung followed by liver (34.15%), spleen (9.06%), heart (3.39%), and kidney
(0.56%). Size assessment made on 874 cysts indicated that 308 (35.3%) were small, 251 (28.7%) medium, 89 (10.2%) large, and
226 (25.9%) were calcified. The distribution of characterized cysts in different organs based on their size was found to be
statistically significant (P < 0.05). In addition, out of the total 874 cysts collected, 26.9% were fertile, 47.3% sterile, and 25.9% calcified or purulent
cysts. There was a significant difference in fertility of cyst from different organs (P < 0.05, χ
2 = 27.96), those of lung origin being highly fertile. Likewise, out of the 121 fertile cysts subjected for viability test,
68 (56.2%) were viable. Considering the current result, the total annual economic loss from organ condemnation and carcass
weight loss due to bovine hydatidosis at Hawassa Municipal abattoir was estimated at 1,791,625.89 Ethiopian Birr (ETB; 1USD = 12.93ETB).
Results in the study were discussed in light of the situation in different parts of Ethiopia and abroad, and finally, relevant
recommendations were forwarded. |
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