International Journal of Agriculture & Agribusiness ISSN: 2391-3991, Volume 6 Issue 2, page 35 – 41 Zambrut Zambrut.com. Publication date: December, 2019. Kerorsa, G. B., Dula, T. I. & Chewaka, G. T. 2019. Major Constraints of Livestock Development (Studied in Lalo Kile District ............ 35 Major Constraints of Livestock Development (Studied in Lalo Kile District, Kellem Wollega Zone, Ethiopia) Gemechu Berhanu Kerorsa 1 , Tesfaye Itefa Dula 2 & Gomol Taresa Chewaka 3 1 Gemechu Berhanu Kerorsa, 2 Tesfaye Itefa Dula & Gomol Taresa Chewaka 3 1 College of Agriculture and Veterinary Medicine, Dambi Dollo University, Ethiopia 2,3 Kellem Wollega Zone Livestock and Fisheries Development Office, Ethiopia 1. INTRODUCTION Ethiopia is believed to have the largest livestock population in Africa. The Ethiopian Central Statistical Authority estimated 59.5 million cattle, 30.70 million sheep, 30.20 million goats, 2.16 million horses, 8.44 million donkeys, 0.41 million mules, 1.21 million camels, 56.53 million poultry and 5.92 beehives in the country. This livestock sector has been contributing considerable portion to the economy of the country, and still promising to rally round the economic development of the country. It is eminent that livestock products and by-products in the form of meat, milk, honey, eggs, cheese, and butter supply etc. provide the needed animal protein that contributes to the improvement of the Abstract: A cross-sectional study design using questionnaire based interview and field visit was used to study on major constraints of livestock development in Lalo Kile District of Kellem Wollega Zone, Oromia Regional State, Ethiopia from October, 2017 to March, 2017. For the interview of the livestock and fisheries development office of the district, veterinary clinics found in the district and respondents were randomly selected from the district. In addition to the data collected from the interview, the recorded data about the livestock in the district were taken from the office. Furthermore field visit was conducted to take different tangible evidences related to the constraints of livestock development. In the study area, the observed major constraints of livestock development were feed shortage, poor breed improvement, practices, Insufficient training of the farmers, market demand after fattening, unavailability of factory feed by-products of feed, lack of improved animal nutrition, lack of infrastructure and different animal diseases. Common animal diseases in the study area were trypanosomosis, external and internal parasites, ovine and bovine pasteurellosis, foot and mouth disease, lumpy skin disease and new castle disease. Among these animal diseases trypanosomosis was one of the main problem from all the animal diseases in the study area. These animal diseases are the main constraints for most of the livestock development in the district. Therefore, animal disease control and prevention strategy should be widely conducted in the study area. Keywords: Animal Diseases, Constraints, Lalo Kile, Livestock development