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Serum D-Β-Hydroxybutyrate And Urea Nitrogen As Indicators Of Beef Cow Nutritional Status, P.A. Momont, R.J. Pruitt, R.H. Pritchard
Serum D-Β-Hydroxybutyrate And Urea Nitrogen As Indicators Of Beef Cow Nutritional Status, P.A. Momont, R.J. Pruitt, R.H. Pritchard
South Dakota Beef Report, 1988
Mature Simmental x Angus crossbred cows were fed differing levels of nutrition before and after calving (mid-March to early May) to determine if blood serum levels of d-β-hydroxybutyrate (BHB) and urea nitrogen (SUN) could be used as indicators of nutritional status. Visual condition scores and condition score change were used as subjective appraisals of cow nutritional status. BHB levels prior to calving were elevated for cows close to calving and those carrying male fetuses. SUN levels prior to calving were higher for thin cows that were losing body condition. If on a low plane of nutrition after calving, BHB values …