Effects of high dietary potassium intake on the absorption and utilization of magnesium by sheep

dc.contributor.authorNewton, George Larryen
dc.contributor.departmentAnimal Scienceen
dc.date.accessioned2016-04-21T15:35:08Zen
dc.date.available2016-04-21T15:35:08Zen
dc.date.issued1969en
dc.description.abstractTwo experiments were conducted to study the effects of a high dietary potassium intake on magnesium metabolism. In experiment 1, eight 3-day balance trials were conducted with 12 crossbred wether lambs. Rations containing equal amounts of magnesium, calcium and sodium and 0.6 or 4.9% potassium were fed. Apparent absorption of magnesium was greatly depressed (P < .05) while apparent absorption of sodium and potassium were generally increased by the addition of 100 gm. of potassium bicarbonate to the ration. There was a trend for higher apparent absorption of calcium by the high-potassium fed lambs. Although blood serum calcium, sodium or potassium showed no distinct trends, there was a trend toward lowered serum magnesium levels after 14 days of potassium supplementation, which disappeared after 27 days. In experiment 2, six paired yearling wethers were fed two rations identical in ingredient composition to those used in experiment 1. All wethers received an intravenous dose of radioactive magnesium²⁸ and magnitude of fecal and urinary magnesium²⁸ excretion was determined and magnesium turnover rates calculated. The high-potassium fed wethers tended to secrete smaller amounts of magnesium²⁸ in the urine and slightly greater amounts in the feces. The high-potassium fed wethers had lower magnesium turnover rates indicating that high potassium levels interfere with magnesium absorption rather than drastically increase the excretion into the intestine.en
dc.description.degreeMaster of Scienceen
dc.format.extentvi, 55 leavesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/70531en
dc.language.isoen_USen
dc.publisherVirginia Polytechnic Instituteen
dc.relation.isformatofOCLC# 7104640en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1969.N46en
dc.subject.lcshMagnesium -- Metabolismen
dc.subject.lcshPotassium -- Physiological effecten
dc.titleEffects of high dietary potassium intake on the absorption and utilization of magnesium by sheepen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineAnimal Scienceen
thesis.degree.grantorVirginia Polytechnic Instituteen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen
Files
Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
LD5655.V855_1969.N46.pdf
Size:
5.09 MB
Format:
Adobe Portable Document Format
Collections