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dc.contributor.authorKirk, W. G.
dc.contributor.authorEasley, J. F.
dc.contributor.authorShirley, R. L.
dc.contributor.authorHodges, E. M.
dc.date.accessioned2020-09-29T04:40:29Z
dc.date.available2020-09-29T04:40:29Z
dc.date.issued1972-03-01
dc.identifier.citationKirk, W. G., Easley, J. F., Shirley, R. L., & Hodges, E. M. (1972). Effect of pregnancy and lactation on liver vitamin a of beef cows grazing pangolagrass. Journal of Range Management, 25(2), 114-116.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/3896797
dc.identifier.urihttp://hdl.handle.net/10150/647410
dc.description.abstractThe effect of pregnancy and lactation on vitamin A and carotene in liver and plasma was determined for beef cows grazing pangolagrass. The cows averaged 13.4 years of age and had grazed pangolagrass continuously as the only source of nutrients for an average of 9.5 years. Calves were weaned August 29, 1965, and cows were slaughtered December 8, 1965. Ten cows, nursing calves in 1965 and pregnant when slaughtered, had an average of 12.3 million I. U. equivalent vitamin A in liver and plasma; seven cows, dry in 1965 and pregnant, had 20.9 million I. U.; three cows, nursing calves in 1965 and open, had 13.3 million I. U.; and one cow, dry in 1965 and open, had 24 million I. U. vitamin A. A well managed pangolagrass pasture in southcentral Florida furnished adequate carotene to meet the vitamin A needs of producing beef cows.
dc.language.isoen
dc.publisherSociety for Range Management
dc.relation.urlhttps://rangelands.org/
dc.rightsCopyright © Society for Range Management.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.titleEffect of Pregnancy and Lactation on Liver Vitamin A of Beef Cows Grazing Pangolagrass
dc.typetext
dc.typeArticle
dc.identifier.journalJournal of Range Management
dc.description.noteThis material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries.
dc.description.collectioninformationThe 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.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform August 2020
dc.source.volume25
dc.source.issue2
dc.source.beginpage114-116
refterms.dateFOA2020-09-29T04:40:29Z


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