Awol Mohammed - Academia.edu (original) (raw)

Papers by Awol Mohammed

Research paper thumbnail of Prevalence, Larvae Burden and Gross Pathological Lesion of Cephalopina titillator in Camels Slaughtered at Addis Ababa Abattoir Akaki Branch, Ethiopia

Cephalopina titillator (C. titillator) is an obligate parasite of the camel and causes nasal myia... more Cephalopina titillator (C. titillator) is an obligate parasite of the camel and causes nasal myiasis in camels throughout the world. The adult fly deposits larvae in the nasal cavity and these remain parasitizing the animal for a considerable period of time. A cross sectional study was conducted on randomly selected camels, Camelus dromedarius (C. dromedarius) slaughtered at Addis Ababa abattoir, Akaki branch, Ethiopia during the period from November 2016 to April 2017 to determine the prevalence of larvae infestation with associated risk factors and gross pathological lesions and larvae burden. Out of total 334 camel heads examined, 276 were infested by C. titillator larvae which give an overall prevalence 82.6%. Analysis of potential risk factors has revealed that the rate of infestation was significantly higher in older camels (88.2%) as compared with younger camel (76.8%) (P<0.05). The rate of infestation was also significantly higher in female camel (88%) than that of male camel (77.8%). On the other hand the difference was not statistically significant (p>0.05) between parasitic infestation with origin and body condition score of camels. But relatively higher prevalence (84.3%) was recorded in camels originated from Borena as compared to those originated from Kereyu (80.4%). Moreover prevalence was relatively higher in camels with poor body condition (91.3%) as compared to that of camels with medium (81.8%) and good body condition score (80.3%). On average 126 C. titillator larvae were counted per animal, and abundant mucous secretion, congested mucus membrane, diffused petechial hemorrhage and development of multiple granuloma were among the major gross pathological lesions observed in nasal cavity, nasopharynx and turbinates. In conclusion the present finding has demonstrated that C. titillator was one of the highly prevalent myiasis in camel rearing area. Therefore further epidemiological investigation on the diagnosis, control and prevention method and its economic impacts are required.

Research paper thumbnail of Prevalence and pathology of indigestable foreign bodies in rumen and reticulum of cattle slaughtered at Kombolcha Elfora Abattoir, north east Ethiopia

Prevalence and pathology of indigestable foreign bodies in rumen and reticulum of cattle slaughtered at Kombolcha Elfora Abattoir, north east Ethiopia

Bulletin of animal health and production in Africa, 2017

Research paper thumbnail of Prevalence and Risk Factor Identification of Calf Coccidiosis in and Around Bahir Dar Town in Amhara Regional State, North West Ethiopia

Journal of Animal Research, 2016

A cross sectional study was conducted from November 2014 to April 2015 in and around Bahir Dar to... more A cross sectional study was conducted from November 2014 to April 2015 in and around Bahir Dar town to determine the prevalence of Coccidia infection in calves and to identify associated risk factors. Fecal samples were collected from a total of 384 randomly selected calves with the age of under 2 years. Collected fecal samples were examined for the presence of Eimeria oocyst by fl otation technique. Out of 384 calves, 73 (19.01%) were found to be positive for Eimeria oocyst. Analysis of potential risk factors has revealed that; there was statistically signifi cant difference (P< 0.05) in the prevalence of coccidia infection to different age groups of animals, fecal consistency, origin, body condition, hygienic status and management system. However, the difference was not statistically signifi cant (P>0.05) between coccidia infection with sex and breed of calves. In conclusion, the present fi nding has demonstrated that calf coccidia are one of the most important pathogens in calves in the study area. Therefore, further epidemiological investigations are required to determine the Eimeria species composition and different agro ecological risk factor on the occurrence of the disease.

Research paper thumbnail of The first isolation and molecular characterization of camelpox virus in Ethiopia

The first isolation and molecular characterization of camelpox virus in Ethiopia

Antiviral Research, 2013

A cross-sectional study was conducted from November 2011 to April 2012 in Chifra district of Afar... more A cross-sectional study was conducted from November 2011 to April 2012 in Chifra district of Afar and in Jigjiga Zone of Somali Regional States of Ethiopia with the aims of assessing the epidemiology of camelpox and isolate and molecularly characterize the virus. The study included a questionnaire, active disease search and virus isolation and sequencing. A total of 24 (4.50%) and 12 (3.0%) camels in Afar and Jigjiga respectively were found clinically sick of camelpox during the study period. The questionnaire survey indicated that camelpox is the most common disease in the areas in which 125 (96%) of the respondents reported the frequent occurrence of camelpox in their herds especially during rainy season. The PCR result revealed 12 out of 17 tested samples were positive, of which seven of them collected from Jigjiga zone showed the characteristic PCR positive bands of 881 bp size fragments while five of the Afar samples gave two faint bands. Ethiopian isolates, specially isolated from Somali have very high identity with comparable sequences of CMLV M-96 from Kazakhstan and CMLV CMS from Iran. Out of the total of 780 bp analogous sequences, Ethiopian isolates differ only in two positions, while CMLV-Teheran differed at four nucleotide positions. The successfull isolation and molecular characterization of camelpox virus in Ethiopia, which could help for early diagnosis and control of the disease in the country.

Research paper thumbnail of Prevalence, Larvae Burden and Gross Pathological Lesion of Cephalopina titillator in Camels Slaughtered at Addis Ababa Abattoir Akaki Branch, Ethiopia

Cephalopina titillator (C. titillator) is an obligate parasite of the camel and causes nasal myia... more Cephalopina titillator (C. titillator) is an obligate parasite of the camel and causes nasal myiasis in camels throughout the world. The adult fly deposits larvae in the nasal cavity and these remain parasitizing the animal for a considerable period of time. A cross sectional study was conducted on randomly selected camels, Camelus dromedarius (C. dromedarius) slaughtered at Addis Ababa abattoir, Akaki branch, Ethiopia during the period from November 2016 to April 2017 to determine the prevalence of larvae infestation with associated risk factors and gross pathological lesions and larvae burden. Out of total 334 camel heads examined, 276 were infested by C. titillator larvae which give an overall prevalence 82.6%. Analysis of potential risk factors has revealed that the rate of infestation was significantly higher in older camels (88.2%) as compared with younger camel (76.8%) (P<0.05). The rate of infestation was also significantly higher in female camel (88%) than that of male camel (77.8%). On the other hand the difference was not statistically significant (p>0.05) between parasitic infestation with origin and body condition score of camels. But relatively higher prevalence (84.3%) was recorded in camels originated from Borena as compared to those originated from Kereyu (80.4%). Moreover prevalence was relatively higher in camels with poor body condition (91.3%) as compared to that of camels with medium (81.8%) and good body condition score (80.3%). On average 126 C. titillator larvae were counted per animal, and abundant mucous secretion, congested mucus membrane, diffused petechial hemorrhage and development of multiple granuloma were among the major gross pathological lesions observed in nasal cavity, nasopharynx and turbinates. In conclusion the present finding has demonstrated that C. titillator was one of the highly prevalent myiasis in camel rearing area. Therefore further epidemiological investigation on the diagnosis, control and prevention method and its economic impacts are required.

Research paper thumbnail of Prevalence and pathology of indigestable foreign bodies in rumen and reticulum of cattle slaughtered at Kombolcha Elfora Abattoir, north east Ethiopia

Prevalence and pathology of indigestable foreign bodies in rumen and reticulum of cattle slaughtered at Kombolcha Elfora Abattoir, north east Ethiopia

Bulletin of animal health and production in Africa, 2017

Research paper thumbnail of Prevalence and Risk Factor Identification of Calf Coccidiosis in and Around Bahir Dar Town in Amhara Regional State, North West Ethiopia

Journal of Animal Research, 2016

A cross sectional study was conducted from November 2014 to April 2015 in and around Bahir Dar to... more A cross sectional study was conducted from November 2014 to April 2015 in and around Bahir Dar town to determine the prevalence of Coccidia infection in calves and to identify associated risk factors. Fecal samples were collected from a total of 384 randomly selected calves with the age of under 2 years. Collected fecal samples were examined for the presence of Eimeria oocyst by fl otation technique. Out of 384 calves, 73 (19.01%) were found to be positive for Eimeria oocyst. Analysis of potential risk factors has revealed that; there was statistically signifi cant difference (P< 0.05) in the prevalence of coccidia infection to different age groups of animals, fecal consistency, origin, body condition, hygienic status and management system. However, the difference was not statistically signifi cant (P>0.05) between coccidia infection with sex and breed of calves. In conclusion, the present fi nding has demonstrated that calf coccidia are one of the most important pathogens in calves in the study area. Therefore, further epidemiological investigations are required to determine the Eimeria species composition and different agro ecological risk factor on the occurrence of the disease.

Research paper thumbnail of The first isolation and molecular characterization of camelpox virus in Ethiopia

The first isolation and molecular characterization of camelpox virus in Ethiopia

Antiviral Research, 2013

A cross-sectional study was conducted from November 2011 to April 2012 in Chifra district of Afar... more A cross-sectional study was conducted from November 2011 to April 2012 in Chifra district of Afar and in Jigjiga Zone of Somali Regional States of Ethiopia with the aims of assessing the epidemiology of camelpox and isolate and molecularly characterize the virus. The study included a questionnaire, active disease search and virus isolation and sequencing. A total of 24 (4.50%) and 12 (3.0%) camels in Afar and Jigjiga respectively were found clinically sick of camelpox during the study period. The questionnaire survey indicated that camelpox is the most common disease in the areas in which 125 (96%) of the respondents reported the frequent occurrence of camelpox in their herds especially during rainy season. The PCR result revealed 12 out of 17 tested samples were positive, of which seven of them collected from Jigjiga zone showed the characteristic PCR positive bands of 881 bp size fragments while five of the Afar samples gave two faint bands. Ethiopian isolates, specially isolated from Somali have very high identity with comparable sequences of CMLV M-96 from Kazakhstan and CMLV CMS from Iran. Out of the total of 780 bp analogous sequences, Ethiopian isolates differ only in two positions, while CMLV-Teheran differed at four nucleotide positions. The successfull isolation and molecular characterization of camelpox virus in Ethiopia, which could help for early diagnosis and control of the disease in the country.