Ten sheep ranches in southwestern Utah were chosen for a verification study of sheep losses during 1972-1975. Using the ratio of verified predator kills to total lamb carcasses discovered, total lamb loss to predators was estimated. Predation accounted for 5.8% of total lambs docked or 62% of the total lamb loss. Coyotes made 94% of all predator kills. For the 10 herds (1972-1974) direct income loss due to lamb predation averaged $2,800 per herd; for a three-herd subsample (1972-1975) direct income loss averaged $3,500 per herd. Applying our study rate of predation to the entire Southwest region of Utah gave an estimate of 14,900 lambs killed by predators and a direct income loss of $419,000. In addition, the region suffered indirect or multiplier losses of $1,166,000 to $1,816,000 during the 4 years studied. Further data needs in predation economics could be achieved by integrating predation loss, predator population, and predator control data into a standard production function model. This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries. The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information. Migrated from OJS platform August 2020
Scholarly peer-reviewed articles published by the Society for Range Management. Access articles on a rolling-window basis from vol. 1, 1948 up to 5 years from the current year. Formerly Journal of Range Management (JRM). More recent content is available by subscription from SRM.