Papers by Alemayehu Regassa
Journal of Soil Science and Environmental Management, 2017
Bookmarks Related papers MentionsView impact
Journal of Veterinary Medicine and Animal Health, 2015
Bookmarks Related papers MentionsView impact
African Journal of Agricultural Research, 2014
Bookmarks Related papers MentionsView impact
A cross-sectional study was conducted from November 2015 to May 2016, to estimate the prevalence,... more A cross-sectional study was conducted from November 2015 to May 2016, to estimate the prevalence, organ distribution, cyst viability and financial losses of bovine hydatidosis in Shashemene municipal abattoir. A total of 405 samples were collected from cattle slaughtered at the abattoir using simple random sampling method. The cattle were examined clinically both at rest and in motion during ante mortem examination. For the post-mortem examination visceral organs were inspected for the presence of hydatid cysts by applying meat inspection procedure. Individual cysts were grossly examined for any evidence of degeneration and calcification. The viability of protoscoleces was assessed by the motility of flame cells. Out of the total examined cattle, 191 (47.2%) were harboring hydatid cyst from one or more of their visceral organs. There was statistically significant association (P <0.05) between age and body condition of the cattle slaughtered with the occurrence of hydatidosis. The...
Bookmarks Related papers MentionsView impact
Background Calf morbidity and mortality are among the main causes of economic losses in dairy far... more Background Calf morbidity and mortality are among the main causes of economic losses in dairy farms around the world. Poor calf management practices make the problem worse in developing nations like Ethiopia. This prospective longitudinal study was carried out in 70 dairy farms selected from southern Ethiopia with the aim of estimating the morbidity and mortality rates in calves and identifying the associated risk factors. To this end, a total of 274 calves were followed up every two weeks for major clinical health problems and deaths from birth to six months of age. Results The study revealed a morbidity rate of 12.7 cases and a mortality rate of 3.7 cases per 100 calf-months at risk in the study calves. The cumulative incidence of morbidity and mortality was also found to be 39.8% and 13.5%, respectively. Diarrhea was the leading cause of morbidity and mortality in calves, accounting for 71.3% and 62.1% of all morbidity and mortality, respectively. In a multivariable Cox regressio...
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
3 Abstract: A cross sectional study was conducted from November 2010 to April 2011 in Bishooftu M... more 3 Abstract: A cross sectional study was conducted from November 2010 to April 2011 in Bishooftu Municipal Abattoir to estimate the prevalence of bovine fasciolosis, to assess the associated risk factors, to estimate the loss due to liver condemnation and to evaluate the sensitivity of coprological test. Thus, a total of 1151 cattle were randomly selected and subjected to coprological and detailed postmortem examinations and the prevalence report of 14.2% (164/1151) and 21.6% (249/1151) were recorded, respectively. The infection proportions of F.hepatica, F. gigantica and mixed infections were found to be 18.3%, 6.4% and 3.1%, respectively by postmortem examination. The highest prevalence was recorded in Bale (33%) followed by Chafe (32%) and Modjo (26%). Similarly, the fecal examination revealed the highest prevalence in Bale (29.6%) followed by Godino (17.9%), Chafe (17.2%), Arisi (16.9%) and Modjo (13.7%). It was observed that the likelihood of occurrence of fasciolosis in Bale (p...
Bookmarks Related papers MentionsView impact
A cross sectional study was carried out from November 2009 to May 2010 in Hawassa town to estimat... more A cross sectional study was carried out from November 2009 to May 2010 in Hawassa town to estimate the overall prevalence, risk factors and major bacterial pathogens of mastitis in lactating dairy cows. A total of 245 cross breed lactating cows were examined clinically as well as by California mastitis test (CMT) to detect clinical and sub clinical mastitis. Milk from quarters showing positive result for clinical as well as sub clinical mastitis was subjected to bacteriological examination. From the total of 980 quarters examined 13 (1.3%) quarters were blind. Out of 245 lactating dairy cows and 980 quarters examined prevalence of 34.3% (84/245) at cow level and 20. 4% (200/ 980) at quarter level was recorded. In this study, the prevalence of clinical and sub- clinical mastitis was 3.3% and 31.0% respectively. Bacteriological examination of mastitis positive quarters revealed Staphylococcus aureus (53.5%); Streptococcus agalactiae (26.5%), E. coli (12.5%), Klebsiella spp (2.5%) and ...
Bookmarks Related papers MentionsView impact
Ethiopian Veterinary Journal, 2021
A cross-sectional study was conducted from October 2018 to December 2019 to estimate the prevalen... more A cross-sectional study was conducted from October 2018 to December 2019 to estimate the prevalence of lameness in dairy cows, to assess the causes and associated risk factors in southern Ethiopia. A total of 2009 dairy cows were visually and clinically examined, and the overall prevalence of lameness was found to be 14. 1% (95% CI=12.7-15.7). The prevalence of lameness was significantly (P< 0.05) higher in Arsi Negelle, Yirgalem, and Wolaita Sodo than in Wondo Genet and Hawassa. The prevalence of lameness was also associated with the stages of pregnancy and parity (P < 0.05). Generally, the prevalence of lameness in dairy cows was increasing with the increase in parity and stage of pregnancy. The main abnormalities observed in this study were hooves overgrowth (6%), lesions between hooves (4%), lesions on legs (2.2%), trauma (0.6%), arthritis (0.5%), and a sole ulcer (0.3%). Most of these abnormalities were mainly due to faulty management. Hence, based on this finding it is...
Bookmarks Related papers MentionsView impact
Journal of Veterinary Medicine and Animal Health, Jan 31, 2013
Bookmarks Related papers MentionsView impact
This study was carried out from November 2007 to April 2008 to determine the prevalence of fascio... more This study was carried out from November 2007 to April 2008 to determine the prevalence of fasciolosis and costs incurred due to liver condemnation and evaluate the sensitivity of direct sedimentation method for diagnosis of fasciolosis in cattle slaughtered at Hawassa Municipal abattoir. A total of 3251 adult indigenous cattle were slaughtered at the abattoir during the study period, of which 931 animals (28.63%) were found to be positive for fasciolosis. There was a statistically sig-nificant (χ 2 = 33.10; p = 0.004) variation in prevalence between the study months where the highest (35.6%) and lowest (21.03%) prevalence were recorded in Febru-ary and April, respectively. Fasciola hepatica (58.9%) was the predominant fluke identified compared to F. gigantica (10.6%). Mixed infections by both species and unidentified immature flukes were detected in 14.7% and 15.8% of the affected livers, respectively. The mean fluke burden in the affected livers was 55 flukes per liver. As to the ...
Bookmarks Related papers MentionsView impact
Small Ruminant Research, 2011
A cross-sectional study to investigate Peste des Petits Ruminants (PPR) seroprevalence was conduc... more A cross-sectional study to investigate Peste des Petits Ruminants (PPR) seroprevalence was conducted between October 2009 and April 2010 in Gambella and Afar regions of Ethiopia. A total of 1163 serum samples were collected from 251 sheep and 912 goats. Competitive Enzyme Linked Immunosorbent Assay (c-ELISA) was used to detect the presence of antibodies in the sera of animals as
Bookmarks Related papers MentionsView impact
Veterinary Parasitology, 2010
Bookmarks Related papers MentionsView impact
Tropical Animal Health and Production, 2013
Bookmarks Related papers MentionsView impact
Open Journal of Animal Sciences, 2012
Bookmarks Related papers MentionsView impact
Veterinary World, 2010
Bookmarks Related papers MentionsView impact
Journal of Parasitic Diseases, 2014
Bookmarks Related papers MentionsView impact
Ethiopian Veterinary Journal, 2014
Bookmarks Related papers MentionsView impact
Tropicultura, 2010
Summary A study was carried out in Arsi-Negele District of Southern Ethiopia to estimate the prev... more Summary A study was carried out in Arsi-Negele District of Southern Ethiopia to estimate the prevalence of brucellosis and bovine tuberculosis in livestock and to identify risk behaviours that would facilitate the transmission of zoonoses to humans. The study involved testing ...
Bookmarks Related papers MentionsView impact
Zoonoses and Public Health, 2008
SummaryA cross‐sectional study was conducted from October 2005 to April 2006 on bovine cysticerco... more SummaryA cross‐sectional study was conducted from October 2005 to April 2006 on bovine cysticercosis in cattle slaughtered at Awassa municipal abattoir with the objective of determining the prevalence of Taenia saginata cysticercosis, cyst viability, distribution and its public health implication. Questionnaire survey involving 120 respondents was also conducted on human taeniasis. A total of 400 carcasses were examined during the study period, of which 105 (26.25%) were infected with T. saginata metacestodes. From a total of 3200 samples inspected, 500 cysticerci were detected in 141 samples, of which 221 (44.2%) were alive. The anatomical distribution of cysticerci were 65 (29.2%) heart, 56 (25.3%) shoulder muscle, 59 (26.7%) masseter, 23 (10.4%) tongue, 12 (5.4%) diaphragm, three (1.4%) liver, two (0.9%) lung and one (0.5%) kidney samples. The prevalence varied significantly between local and crossbred animals (OR = 3.15, P < 0.05), but not varied between sex, age groups and o...
Bookmarks Related papers MentionsView impact
Uploads
Papers by Alemayehu Regassa