Mortality of Cattle on Two Types of Grazing Areas in Northwestern Alberta
AuthorBjorge, R. R.
MetadataShow full item record
CitationBjorge, R. R. (1983). Mortality of cattle on two types of grazing areas in northwestern Alberta Canada. Journal of Range Management, 36(1), 20-21.
PublisherSociety for Range Management
JournalJournal of Range Management
AbstractCattle mortality was investigated on 3 intensively managed Provincial Grazing Reserves (PGR) and 7 heavily treed, less intensively managed woodland grazing leases (Simonette pastures) in northwestern Alberta during 1976-1979 inclusive. Cattle losses (including dead and missing animals) on the Simonette pastures averaged 2.7 times greater than losses on the PGR. Calves were lost at a greater rate than yearlings and mature cattle on both types of grazing areas. Calves born on the Simonette pastures died at a rate nearly 5 times that of calves born prior to entering these pastures. Death from predation accounted for 48.4% of 33 recorded deaths on the Simonette pastures compared to 3.3% of 90 deaths on PGR. Greater losses of cattle on the Simonette pastures appeared associated with greater concentration of trees, less intensive supervision, and greater numbers and species of predators.