Pine Needle Water Extracts as Potential Abortive Agents in Gestating Cow Diets
CitationMajak, W., Waldern, D. E., & McLean, A. (1977). Pine needle water extracts as potential abortive agents in gestating cow diets. Journal of Range Management, 30(4), 318-319.
PublisherSociety for Range Management
JournalJournal of Range Management
AbstractA number of bovine abortions were reported during warm spells of the winter of 1974 in the southern interior of British Columbia. Observers speculated that the frequent thawing periods produced a run-off which extracted and accumulated abortive agents from the pine needle litter. In a test of this hypothesis, five pregnant cows each consumed extract from 200 to 300 kg ponderosa pine needles during their last trimester. No pre-partum effects were observed and five normal calves were delivered.