Dereje Tulu Robi

Ethiopian Institute of Agricultural Research | EIAR · Department of Veterinary Epidemiology

performance and addaptation evaluation

Bovine tuberculosis, caused by Mycobacterium bovis, is a chronic zoonotic disease that persists in Ethiopia despite global control efforts, impacting public health and the economy. However, little is known about the epidemiology of bovine tuberculosis in Southwest Ethiopia. This study aims to assess the prevalence of bovine tuberculosis and identif...

The growth and development of mulberry silk worm Bombyx mori L. are based on the quality and quantity of mulberry leaves used as food, which, in turn, affects the quality and yield of the cocoons. This study was carried out to evaluate the mulberry genotype, Morus spp., and its feeding value in relation to the rearing performance in southwest Ethio...

Bovine coronavirus (BCoV), bovine respiratory syncytial virus (BRSV), bovine viral diarrhea virus (BVDV), and bovine rotavirus (BRV) are common viral infections in dairy calves, resulting in significant economic losses in the dairy industry. BCoV causes severe diarrhea and respiratory disease, with transmission primarily occurring through the fecal...

Background The study aimed to evaluate the immunological response of layer chickens to live Newcastle disease virus vaccine using a newly developed vaccine schedule administered via the ocular route, as well as assess the persistence of passive antibodies in layer chickens and the effectiveness of protection against strains of the virus. Methods A...

In Ethiopia, Coxiella burnetii, Leptospira Hardjo, and Brucella spp are recognized as the primary factors contributing to cattle reproductive issues. A cross-sectional study was conducted in southwest Ethiopia from October 2020 to October 2021 to assess the risk of reproductive disorders associated with L. Hardjo, Coxiella burnetii, and Brucella sp...

Cattle abortion, stemming from both infectious and non-infectious causes, lead to notable financial setbacks in the cattle industry. Between October 2020 and October 2021, an epidemiological investigation took place in Southwest Ethiopia. The objective was to determine the magnitude and seasonal occurrence of the presumed causes of cattle abortion....

Dairy farming faces a significant challenge of bacterial infections in dairy calves, which can have detrimental effects on their health and productivity. This review offers a comprehensive overview of the most prevalent bacterial infections in dairy calves, including Escherichia coli, Salmonella typhimurium, Salmonella dublin, Salmonella enterica,...

Eukaryotic infections are common among dairy calves and can have significant impacts on their health and growth rates. Fungal infections caused by Aspergillus fumigatus, Trichophyton verrucosum, and Candida albicans can cause respiratory diseases, dermatophytosis, and diarrhea, respectively. Protozoan parasites, including Cryptosporidium parvum, Gi...

Background The utilization of veterinary vaccines plays a vital role in preventing and managing animal diseases. However, the success of vaccination programmes relies on livestock farmers’ understanding, perspectives and behaviours regarding their application. Therefore, this study aims to evaluate the knowledge, attitudes and practices of livestoc...

Little information is available on the epidemiology of varroosis caused by Varroa mite, Varroa destructor infestation in Ethiopia, although it is a devastating honeybee disease that results in significant economic losses in beekeeping. Therefore, between October 2021 and October 2022, a cross-sectional study was carried out in different agroecology...

Coxiellosis is a zoonotic disease that is prevalent globally and can pose significant challenges, especially in less developed countries like Ethiopia. Coxiella burnetii is responsible for causing an infection called Q fever in humans and coxiellosis in ruminants. Pneumonia and endocarditis are the only signs that characterize the acute and chronic...

A prospective cohort study was carried out between September 2021 and October 2022 in Robi Gebeya Kebele Integrated Dairy Crop Research Village, located in the Wolmera district of Oromia regional state, Ethiopia. The purpose of the study was to investigate the impact of seasonal Levamisole deworming on gastrointestinal parasites in dairy animals in...

Brucellosis is a zoonotic infection that commonly affects cattle in Ethiopia, causing significant negative economic impact. A cross-sectional study was carried out between November 2020 and November 2021 in southwest Ethiopia to determine the seroprevalence of brucellosis and its associated risk factors in cattle herds. Blood samples were taken fro...

The availability of bee forage limits honeybee productivity and is very important for beekeepers. Therefore, the current study aimed to identify the major botanical resources of honeybee, A. mellifera scutellata, in Southwest Ethiopia. Between October 2019 and October 2020, 69 group discussions (8–12 beekeepers), field observations, and pollen anal...

Three zoonotic bacteria, Coxiella burnetii, Leptospira spp, and Brucella spp, cause cattle abortion and significant losses in the livestock sector. However, these infections were neglected diseases in Ethiopia. Between October 2020 and October 2021, a cross-sectional study was carried out in southwest Ethiopia to determine the prevalence of abortio...

Reproduction is a basic requirement for efficient cattle production to continue or cease; whereas, reproductive disorders are the leading cause of economic loss in the cattle industry. To determine the prevalence and associated risk factors of major reproductive disorders in cattle in the Tole district, a cross-sectional study design was conducted...

Alfalfa (Medicago sativa L.) is one of the most important perennial forage legumes with high nutritional quality. Four alfalfa cultivars were sown in randomized block design with four replications to evaluate their dry matter yield and nutritional quality under rain-fed conditions during 2016–2017 at Masha, southwest Ethiopia. Percentage of plot co...

The study was conducted to evaluate thirteen pre-screened lablab purpureus (L) genotypes out of ninety eight genotypes that introduced from ILRI Addis Ababa, Ethiopia for their potentials on dry matter and forage yield and also chemical compositions and in-vitro dry matter digestibility under lowland conditions of South West Ethiopia. The experimen...

The quality of feed plays an important role in the growth and development of silkworms and eventually in the economic traits of cocoons. This study was conducted to evaluate ten castors (Ricinus communis L.) genotypes and their feeding values on the rearing performance of Eri Silkworm (Samia cynthia ricini Boisduval) (Lepidoptera: Saturniidae) at T...

The study was conducted during 2016-2020 cropping season in selected districts namely Yeki, Shey-Bench and Meinit-Goldia, South west Ethiopia with proposed objective of pre-extension and demonstration of selected forage technologies like Desho, Elephant and Rhodes grass and also Stylosantus forage species. A total of 226 number of demonstrations we...

Dereje Tulu Ethiopia Institute of Agricultural Research, Tepi Agricultural Research Center, Tepi, EthiopiaCorrespondence: Dereje TuluEthiopia Institute of Agricultural Research, Tepi Agricultural Research Center, PO Box 34, Tepi, EthiopiaEmail derejetulu5@gmail.comAbstract: Brucellosis is a globally distributed zoonotic disease that causes serious...

Abstract – The study was conducted in Tepi National Spice Research Center from 2015 to 2017 on performance evaluation of Apis mellifera Weyi gambella honey bee races with the aim of the study were to determine and select the best performing honey bee races in terms of defensive, hygienic, absconding, foraging, swarming and higher on hive produ...

Trypanosomiasis is an impediment to cattle production and other agricultural development in tsetse-infested areas. It is a severe parasitic disease that causes loss in the production and performance of cattle. Hence, the aim of this paper is to review trypanosomiasis control options with emphasis on the use of trypanotolerant Sheko cattle breed for...

In Ethiopia, feed is the major production inputs that affect the production and productivity of animal. In this regard, One of the possible option to alleviate feed shortage is introduction and utilization of improved forage crops for the given production system. The study was conducted on 11 oat varieties during 2017 and 2018 main cropping season...

Background Abortion, causes by several infectious and non‐infectious factors is one of the most critical health problems of cattle in Ethiopia. Thus, this study aimed to assess knowledge and perception of the community about potential causes of abortion and case‐control study of brucellosis as a cause of abortion in cattle of study districts. Meth...

Trypanosomosis is highly reliant on the distribution of vectors responsible for transmission. A cross-sectional study was conducted to determine the prevalence and associated risk factors of bovine trypanosomosis as well as the distribution of vectors in the Jimma zone, Ethiopia. Blood samples from a total of 2088 cattle were collected and tested u...

A participatory epidemiological study was conducted with cattle keepers in Jimma zone, Ethiopia, between October 2018 and October 2019 to identify the causes of abortion in cattle. Data collection involved 20 group discussions (each comprising 8–12 people) in 10 peasant associations. Methods used in group discussions included semi-structured interv...

Background: Trypanosomosis is the most prevalent disease and causes serious economic losses in Ethiopia. The disease is among the major constraint to camel production in the country. Hence, this study aimed to determine the occurrence and associated risk factors of camel trypanosomosis in the Borana zone, Ethiopia. Methods: A cross-sectional stu...

The study was carried out in Sheka and Bench-Maji Zones of southwest Ethiopia to investigate the naturally constructed bee spaces and comb cell dimensions in traditional bee hive and recommend appropriate bee space and comb cell dimensions for honey bee races/ecotypes in the study area. A total of 60 traditional bee hives (10 hives/ district) was u...

Background: The epidemiology of cattle abortion and its association with brucellosis is not well understood in Ethiopia. Therefore, the aim of this study was to determine the magnitude, associated risk factors of abortion, and its association with brucellosis in cattle of Jimma zone, Ethiopia. Methods: A cross-sectional study was carried out fro...

The study was conducted in Tepi National Spice Research Center from 2015 to 2017 on performance evaluation of Apis mellifera Weyi gambella honey bee races with the aim of the study were to determine and select the best performing honey bee races in terms of defensive, hygienic, absconding, foraging, swarming and higher on hive product area measurem...

Abstract – The study was conducted in Tepi National Spice Research Center from 2015 to 2017 on performance evaluation of Apis mellifera Weyi gambella honey bee races with the aim of the study were to determine and select the best performing honey bee races in terms of defensive, hygienic, absconding, foraging, swarming and higher on hive product ar...

Trypanosomosis is a protozoan disease, mostly transmitted by the tsetse fly, Glossina spp., which causes severe disease livestock in Ethiopia. The disease results in loss of livestock and agricultural productivity with serious socioeconomic consequences. Bovine trypanosomosis is widely distributed in western and southwestern part of the country. Si...

Chickens rising have long been a line of tradition and the large numbers of chicken populations are kept in the backyard production system in Ethiopia. Poultry disease is among the main constraints of poultry production in the country. The infectious bursal disease is widespread viral diseases that affect chicken kept in commercial and backyard pro...

The aims of this study were to determine appropriate time and efficient techniques of harvesting methods for Panicum Coloratum forage. The experiment was designed in randomized complete block design (RCBD,) in 4x4 factorial combinations of harvesting methods (mowing, sweating, shaking and sweeping) and time harvesting (14th, 21th, 28th and 35th...

Sheep and goats disease is among the main constraints of small ruminant production in the country. The peste des petits ruminants disease is widespread viral diseases that affect sheep and goats kept in a different production system. This disease is a primary effect of sheep and goats. Peste des petits ruminants are caused by peste des petits rumin...

A cross-sectional study was carried out from November 2015 to November 2016 to investigate the prevalence and associated risk factors of gastrointestinal parasites of cattle in four districts of east Shewa zone. Fecal samples were examined by using simple flotation techniques. Out of 384 cattle examined 157 (40.9%) were found positive for at least...

Sheep and goats are the major sources for meat, skin and offal exported in Ethiopia. A cross-sectional study was conducted from December 2016 to December 2017 to determine the major cause of organs condemnation (liver, lung, heart and kidneys) and the associated annual financial loss at HELMEX abattoir. A total of 1882 (goats 1,062 and sheep 820) r...

Abortion is one of the most important causes of economic losses in Ethiopian cattle industry. A cross sectional study was conducted between October 2016 and October 2017 to quantify the prevalence and associated risk factors of abortion in dairy cattle of Jimma Horro district of Kellem Wollega zone in western Ethiopia. A total of 384 dairy cattle w...

Reproductive health problems are one of the major causes of economic losses in Ethiopian cattle industry. A cross sectional study was carried out to determine prevalence and its associated risk factors of major reproductive health problem in dairy cattle of Jimma Horro district from November 2016 to November 2017. From a total of 384 randomly selec...

The occurrence of brucellosis in different species of livestock has been reported from different parts of Ethiopia, however, the serostatus and risk factors of this disease in small ruminants is not well documented in southwestern parts of the country. This study was conducted from October 2016 to October 2017 to investigate the seroprevalence and...

The study was conducted in Bench-Maji and Sheka of Southern Nation's Nationalities and Peoples Regional State and Mejenger Zone of Gambella National Regional State to identify the major health problems recognized by farmers and livestock constraints in the study Zones. The questionnaire survey result revealed that Black leg (66.5%), ticks (46.5%),...

Trypanosomosis is a serious parasitic disease in cattle that affected food production and economic growth in Ethiopia. A cross-sectional study design was carried out in the Bench-Sheko zone Southwestern Ethiopia with the aim of determine the occurrence and associated risk factors of trypanosomosis in cattle from November 2016 to November 2017. From...

Backyard poultry production has been a long-established husbandry practice in Ethiopia. It is estimated that Ethiopia’s backyard poultry population is about 53.31 million. The productivity of backyard poultry is constrained by disease outbreak especially Newcastle disease. Newcastle disease is an endemic, highly contiguous, viral disease that affec...

Bovine brucellosis is a serious zoonotic infectious disease with widespread occurrence in developing countries like Ethiopia. A cross-sectional study was conducted from November 2017 to November 2018 to investigate the prevalence and associated risk factors of brucellosis in breeding female cattle under the traditional production system of the Jimm...

Several causative infectious agents are responsible for abortion causes in sheep and goats. The economic and zoonotic signifi cance of infectious causes of abortion remains of concern in developing countries. Abortion in general causes substantial losses of productivity through death and expulsion of a fetus by the ewe/doe before the end of a norma...

to investigate risk factors of bru-cellosis in aborted cattle in Jimma zone. During the study period, 141 cases and 282 controls were selected to assess and compare the presence of anti-Brucella antibodies between cases and controls. Cattle that had experienced abortion were defined as cases, whereas controls were cattle that had no record of abort...

Beekeeping is one of the most important sectors that contribute to the improvement of the livelihoods of people in many countries. A cross-sectional study was carried out in southwestern Ethiopia to determine the adoption rate, determinate factors, and community perception of improved beekeeping technologies. A multistage random sampling method was...

Dystocia is one of reproduction problem that causes a serious economic loss in the cattle production. A cross-sectional study was conducted from January 2017 to January 2018 to determine the occurrence and associated risk factors for dystocia in the Jimma Horro district of Kellem Wollega zone. A questionnaire survey involving a total of 384 randoml...

Leptospirosis is a re-emerging zoonotic disease of worldwide public health significance that affects domestic animals and humans. The disease is caused by various serovars of leptospira interrogans that belong to the genus Leptospira. Pomona, Canicola, Bratislava, Grippotyphosa, Hardjo and Icterohemorrhagiae are the common serovars of L. interrogan...

A cross-sectional study was carried out from November 2016 to November 2017 on bovine fasciolosis in Holeta and Adaberga dairy farms by using coprological examination of feaces from sampled animals. The objective of the study was to determine prevalence and associated risk factors of bovine fasciolosis in Jersey breed and Holstein Friesian x Boran...

A swine production form is an integral part of a farmer's economy in many parts of the world. Swine production in Ethiopia is in its infant stage. A cross-sectional study was conducted on farms found in Bishoftu from November 2018 to November 2019 to identify the production, health and marketing constraints of swine in the study area. The collected...

Neonatal calf diarrhea or calf scours is a common disease that affected the newborn calf and it occurs when the capability of the intestine to absorb fluid is impaired. Calf scours is not a single disease entity, it is a clinical syndrome associated with several diseases characterized by diarrhea. The scouring calf loses fluids, rapidly dehydrates...

Brucellosis is a serious economic and public well-being concern throughout the world. It is a global spreading and causes a serious problem to developing country similarly to Ethiopia. B. melitensis, B. ovisis the foremost reason for this disease in the small ruminant. Moreover, B. abortus, the reason for brucellosis in small ruminants occasionally...

The medicinal plants have continued to be the most affordable and easily accessible source for the treatment of several human and livestock ailments in Ethiopia. The data were collected from traditional healers and knowledgeable people using group discussion, semi-structured interviews, guided field walks, and observations. A total of 63 medicinal...

The study was conducted from November 2015 to November 2016 to determine bacterial load and identify pathogenic bacteria ( S. aureus , E. coli , and Salmonellae species) in meat from abattoir and butcher shops as well as to assess associated hygienic and sanitation practices being experienced in the selected study site. A cross-sectional study was...

Brucellosis is one of the major causes of abortion in sheep as well as results in high economic loss and public health concern in developing countries. This case-control study was conducted from October 2017 to October 2018 to investigate brucellosis as a cause of abortion and its associated risk factors in breeding sheep in Jimma zone. During the...

Characterization of smallholder poultry production systems in Mezheger,Sheka and Benchi Maji zones of south western Ethiopia.

Ectoparasitesare a serious pathogens sheep and goat industry that cause a significant negative impact in tanning industry and economic growth in Ethiopia. A cross sectional study was conducted in Yeki district, Southwestern Ethiopia to determine the prevalence and associated risk factors of Ectoparasites in sheep and goats from December 2016 to Dec...

A cross sectional study was conducted to determine the prevalence and socio economic importance of the major metacestodes of the cattle from November, 2016 to April 2017 at Bedele municipality abattoir. Accordingly, of 550 selected slaughtered cattle, the prevalence of cysticercus bovis and Hydrated cyst was found to be 2 % (11/550) and 10.5% (58/5...

Abortion in dairy cattle may be caused by infectious and non-infectious agents. Infectious causes of abortion in dairy cattle include brucellosis, leptospirosis, listeriosis, Q fever, bovine viral diarrhea, mycotic abortion and neosporosis. Non-infectious causes of abortion in dairy cattle are genetic and non-genetic disorder. Risk factors associat...

Ectoparasite in sheep and goats are causing a serious problem in tanning industry and economic growth in Ethiopia. A cross sectional study was conducted in Debub Bench district of Bench Maji zone to determine prevalence and associated risk factors of ectoparasite in sheep and goats from December 2016 to December 2017. A total of 627 small ruminants...

The study was conducted in Bench-Maji and Sheka of Southern Nation's Nationalities and Peoples' Regional State and Mejenger Zone of Gambella National Regional State to characterize livestock production system, identify feed availability and major cattle diseases in the study Zones. A total of 200 household heads were selected using multistage purpo...