Gustafsson, A H <br/><br/>
Diurnal variation of rumen ammonia, serum urea, and milk urea in dairy cows at high and low yields.  [electronic resource] 

 -  Journal of dairy science  Feb 1993 
 - 475-84 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>0022-0302 
<br/><br/><label>Standard No.: </label>10.3168/jds.S0022-0302(93)77368-3  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ammonia--analysis<br/>Animal Nutritional Physiological Phenomena<br/>Animals<br/>Cattle<br/>Circadian Rhythm<br/>Female<br/>Lactation<br/>Milk--chemistry<br/>Rumen--chemistry<br/>Urea--analysis