Mature grade Brahman cows grazing pangolagrass (Digitaria decumbens Stent.) from 3 to 17 years as the only source of nutrients other than common salt and red salt had an average of 2624 mcg vitamin A and 59 mcg B-carotene per gram dry liver and 46 mcg vitamin A and 1020 mcg B-carotene per 100 ml blood plasma. The liver of a 1168 pound cow had the equivalent of 16.3 million I. U. vitamin A. The cows had livers with approximately 28 times more vitamin A, and plasma 5.5 times more B-carotene than steers fed a finishing ration containing 10% yellow corn meal and 5% alfalfa meal for 140 days. Beef cows grazing well managed Florida improved pasture would obtain more than sufficient vitamin A for maintenance, reproduction, and milk production as indicated by their performance and storage of this vitamin. 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.