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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 …
Relationships Between Body Condition Scores And Live Animal Measurements Of Beef Cows, P.A. Momont, R.J. Pruitt
Relationships Between Body Condition Scores And Live Animal Measurements Of Beef Cows, P.A. Momont, R.J. Pruitt
South Dakota Beef Report, 1988
Records from 133 mature Simmental x Angus cows collected over a 3-year period were used to determine the relationships between body condition scores and other measurements of cow body condition. Positive correlations were found between condition scores and backfat, weight/height ratios and cow weight. Correcting weight/height ratios of pregnant cows for weight of the conceptus did not improve the correlations with condition score. Backfat measurements had limited use in describing body condition, since backfat wasnear zero for cows less than condition score 5. Equations using condition scores accurately predicted weight/height ratios.
Effects Of Cow Body Condition And Calving Date On Calf Performance, P.A. Momont, R.J. Pruitt
Effects Of Cow Body Condition And Calving Date On Calf Performance, P.A. Momont, R.J. Pruitt
South Dakota Beef Report, 1988
Records from 285 Charolais-sired calves out of 133 Simmental x Angus crossbred cows taken over 3 years were used to evaluate the influence of cow body condition at calving, condition score change following calving and calf birth date on calf performance. Calves nursing cows with higher condition scores in March had increased daily gains from birth until May. However, at weaning time average daily gain and weaning weights were similar regardless of cow condition at calving. Cows which maintained body condition or lost less than two condition scores from March to May weaned heavier calves than cows which lost two …