POTENTIAL INTERACTIONS OF DIETARY CATION-ANION DIFFERENCE AND MONENSIN WITH RESPECT TO FEED EFFICIENCY IN LACTATING DAIRY CATTLE

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dc.contributor.advisorErdman, Richarden_US
dc.contributor.authorWeidman, Amyen_US
dc.contributor.departmentAnimal Sciencesen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2015-02-06T06:48:31Z
dc.date.available2015-02-06T06:48:31Z
dc.date.issued2014en_US
dc.description.abstractThe ionophore monensin improves feed efficiency (FE) by increasing sodium uptake in rumen bacteria, which alters rumen fermentation. Dietary cation-anion difference (DCAD) represents the balance between the dietary strong cations (Na and K) and strong anion (Cl) and increased DCAD also improves FE. This study tested the interaction of monensin and DCAD using sodium sesquicarbonate and potassium carbonate as the strong ion sources in 18 early to mid-lactation Holstein cows. Monensin, DCAD and the monensin-DCAD interaction had no effect on dry matter intake, milk production and milk composition, and FE. However, addition of dietary sodium and potassium increased rumen concentrations of those minerals and increased rumen acetate and decreased rumen propionate concentrations. The effect of sodium on rumen acetate and total VFA concentrations was more pronounced in the monensin diets suggesting an interaction between monensin and DCAD on rumen fermentation.en_US
dc.identifierhttps://doi.org/10.13016/M2G034
dc.identifier.urihttp://hdl.handle.net/1903/16219
dc.language.isoenen_US
dc.subject.pqcontrolledAnimal sciencesen_US
dc.titlePOTENTIAL INTERACTIONS OF DIETARY CATION-ANION DIFFERENCE AND MONENSIN WITH RESPECT TO FEED EFFICIENCY IN LACTATING DAIRY CATTLEen_US
dc.typeThesisen_US

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