{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/101314"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/101314","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"Magnesium absorption in sheep infused with potassium in different parts of the digestive tract","abstract":"Two metabolism trials were conducted with 12 crossbred wether lambs, each surgically prepared with a rumen catheter, and abomasal and ileal cannulae to study the effect of K infusion in the different sites on site of absorption and flow of minerals. The treatments consisted of the infusion of 33.6, 12.0 or 12.0 g K/d as bicarbonate into either the rumen, abomasum or ileum, respectively. Each trial consisted of a minimum 5 d preliminary period, five 3 d collection periods of feed, feces and urine for determining mineral balance and a 6 d sampling period of feed, abomasal and ileal contents and feces for determining mineral flow and site of absorption. Chromic oxide was used as a marker. Magnesium was absorbed primarily from the preintestinal region. Ruminal infusion of K tended to decrease preintestinal Mg absorption. Total Mg absorption was decreased ( P<. 05) by 43% when K was infused into the rumen. There was a slight absorption of Mg in the small intestine followed by a net secretion of Mg into the large intestine. Serum Mg levels tended to be depressed in the animals infused with K intraruminally. Calcium flow into the preintestinal region was decreased ( P<. 05) by infusion of K into the rumen. Generally, a net secretion of Ca occurred in the preintestinal region and in the large intestine, with the small intestine being the major site of absorption. Only animals being infused with K in the rumen secreted Na into the preintestinal region. The large intestine was the primary site of Na absorption. Phosphorus flow into the preintestinal region was decreased (P<.05) by infusion of K into the rumen. The small intestine was the main site for P absorption. Potassium flow into both the preintestine and small intestine was increased (P<.05) by ruminal K infusion. The flow of K into the small intestine was increased by ileal K infusion. The infusion of K increased (P<.05) the absorption of K as compared to the control animals with the small intestine being the major absorptive site. The infusion of K bicarbonate into the rumen of sheep raised (P<.05) the pH of the rumen.","abstract_html":"Two metabolism trials were conducted with 12 crossbred wether lambs, each surgically prepared with a rumen catheter, and abomasal and ileal cannulae to study the effect of K infusion in the different sites on site of absorption and flow of minerals. The treatments consisted of the infusion of 33.6, 12.0 or 12.0 g K/d as bicarbonate into either the rumen, abomasum or ileum, respectively. Each trial consisted of a minimum 5 d preliminary period, five 3 d collection periods of feed, feces and urine for determining mineral balance and a 6 d sampling period of feed, abomasal and ileal contents and feces for determining mineral flow and site of absorption. Chromic oxide was used as a marker. Magnesium was absorbed primarily from the preintestinal region. Ruminal infusion of K tended to decrease preintestinal Mg absorption. Total Mg absorption was decreased ( P&lt;. 05) by 43% when K was infused into the rumen. There was a slight absorption of Mg in the small intestine followed by a net secretion of Mg into the large intestine. Serum Mg levels tended to be depressed in the animals infused with K intraruminally. Calcium flow into the preintestinal region was decreased ( P&lt;. 05) by infusion of K into the rumen. Generally, a net secretion of Ca occurred in the preintestinal region and in the large intestine, with the small intestine being the major site of absorption. Only animals being infused with K in the rumen secreted Na into the preintestinal region. The large intestine was the primary site of Na absorption. Phosphorus flow into the preintestinal region was decreased (P&lt;.05) by infusion of K into the rumen. The small intestine was the main site for P absorption. Potassium flow into both the preintestine and small intestine was increased (P&lt;.05) by ruminal K infusion. The flow of K into the small intestine was increased by ileal K infusion. The infusion of K increased (P&lt;.05) the absorption of K as compared to the control animals with the small intestine being the major absorptive site. The infusion of K bicarbonate into the rumen of sheep raised (P&lt;.05) the pH of the rumen.","abstract_has_math":false,"creators":["Wylie, Mary Jean"],"institution":"Virginia Polytechnic Institute and State University","degree_name":"M.S.","degree_level":"masters","degree_discipline":"Animal Science","degree_department":"Animal Science","school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1983,"date_issued":"1983","date_published":"1983","updated_at":"2026-07-22T22:20:38Z","subjects":[],"languages":["en"],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10919/101314","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.department","label":"Department","values":["Animal Science"]},{"key":"dc:creator","label":"Author","values":["Wylie, Mary Jean"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2020-12-14T17:48:22Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2020-12-14T17:48:22Z"]},{"key":"dc:date.issued","label":"Date","values":["1983"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Polytechnic Institute and State University"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.dcmitype","label":"Dc Type Dcmitype","values":["Text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Animal Science"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute and State University"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/101314"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Two metabolism trials were conducted with 12 crossbred wether lambs, each surgically prepared with a rumen catheter, and abomasal and ileal cannulae to study the effect of K infusion in the different sites on site of absorption and flow of minerals. The treatments consisted of the infusion of 33.6, 12.0 or 12.0 g K/d as bicarbonate into either the rumen, abomasum or ileum, respectively. Each trial consisted of a minimum 5 d preliminary period, five 3 d collection periods of feed, feces and urine for determining mineral balance and a 6 d sampling period of feed, abomasal and ileal contents and feces for determining mineral flow and site of absorption. Chromic oxide was used as a marker. Magnesium was absorbed primarily from the preintestinal region. Ruminal infusion of K tended to decrease preintestinal Mg absorption. Total Mg absorption was decreased ( P<. 05) by 43% when K was infused into the rumen. There was a slight absorption of Mg in the small intestine followed by a net secretion of Mg into the large intestine. Serum Mg levels tended to be depressed in the animals infused with K intraruminally. Calcium flow into the preintestinal region was decreased ( P<. 05) by infusion of K into the rumen. Generally, a net secretion of Ca occurred in the preintestinal region and in the large intestine, with the small intestine being the major site of absorption. Only animals being infused with K in the rumen secreted Na into the preintestinal region. The large intestine was the primary site of Na absorption. Phosphorus flow into the preintestinal region was decreased (P<.05) by infusion of K into the rumen. The small intestine was the main site for P absorption. Potassium flow into both the preintestine and small intestine was increased (P<.05) by ruminal K infusion. The flow of K into the small intestine was increased by ileal K infusion. The infusion of K increased (P<.05) the absorption of K as compared to the control animals with the small intestine being the major absorptive site. The infusion of K bicarbonate into the rumen of sheep raised (P<.05) the pH of the rumen."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["M.S."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Magnesium absorption in sheep infused with potassium in different parts of the digestive tract"]}]}],"canonical_facts":{"dc:contributor.department":["Animal Science"],"dc:creator":["Wylie, Mary Jean"],"dc:date.accessioned":["2020-12-14T17:48:22Z"],"dc:date.available":["2020-12-14T17:48:22Z"],"dc:date.issued":["1983"],"dc:description.abstract":["Two metabolism trials were conducted with 12 crossbred wether lambs, each surgically prepared with a rumen catheter, and abomasal and ileal cannulae to study the effect of K infusion in the different sites on site of absorption and flow of minerals. The treatments consisted of the infusion of 33.6, 12.0 or 12.0 g K/d as bicarbonate into either the rumen, abomasum or ileum, respectively. Each trial consisted of a minimum 5 d preliminary period, five 3 d collection periods of feed, feces and urine for determining mineral balance and a 6 d sampling period of feed, abomasal and ileal contents and feces for determining mineral flow and site of absorption. Chromic oxide was used as a marker. Magnesium was absorbed primarily from the preintestinal region. Ruminal infusion of K tended to decrease preintestinal Mg absorption. Total Mg absorption was decreased ( P<. 05) by 43% when K was infused into the rumen. There was a slight absorption of Mg in the small intestine followed by a net secretion of Mg into the large intestine. Serum Mg levels tended to be depressed in the animals infused with K intraruminally. Calcium flow into the preintestinal region was decreased ( P<. 05) by infusion of K into the rumen. Generally, a net secretion of Ca occurred in the preintestinal region and in the large intestine, with the small intestine being the major site of absorption. Only animals being infused with K in the rumen secreted Na into the preintestinal region. The large intestine was the primary site of Na absorption. Phosphorus flow into the preintestinal region was decreased (P<.05) by infusion of K into the rumen. The small intestine was the main site for P absorption. Potassium flow into both the preintestine and small intestine was increased (P<.05) by ruminal K infusion. The flow of K into the small intestine was increased by ileal K infusion. The infusion of K increased (P<.05) the absorption of K as compared to the control animals with the small intestine being the major absorptive site. The infusion of K bicarbonate into the rumen of sheep raised (P<.05) the pH of the rumen."],"dc:description.degree":["M.S."],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["http://hdl.handle.net/10919/101314"],"dc:language.iso":["en"],"dc:publisher":["Virginia Polytechnic Institute and State University"],"dc:rights":["In Copyright"],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:title":["Magnesium absorption in sheep infused with potassium in different parts of the digestive tract"],"dc:type":["Thesis"],"dc:type.dcmitype":["Text"],"thesis:degree_discipline":["Animal Science"],"thesis:degree_level":["masters"],"thesis:degree_name":["M.S."],"thesis:institution_name":["Virginia Polytechnic Institute and State University"]},"updated_at":"2026-07-22T22:20:38Z"}