Rųjen, B A <br/><br/>
Effect of time duration of ruminal urea infusions on ruminal ammonia concentrations and portal-drained visceral extraction of arterial urea-N in lactating Holstein cows.  [electronic resource] 

 -  Journal of dairy science  Mar 2012 
 - 1395-409 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>1525-3198 
<br/><br/><label>Standard No.: </label>10.3168/jds.2011-4475  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ammonia--analysis<br/>Animals<br/>Catheterization--veterinary<br/>Cattle<br/>Diet--veterinary<br/>Eating<br/>Female<br/>Lactation--metabolism<br/>Nitrogen--deficiency<br/>Portal Vein--metabolism<br/>Rumen--chemistry<br/>Time Factors<br/>Urea--blood