Predicting the time of calving

Predicting the time of calving

Dr. Glenn Selk, Oklahoma State University

      Scientists recorded data on 5 consecutive years in a herd of spring calving crossbred cows at the Kansas State University Agricultural Research Center at Hays, Kansas.  They recorded the time of calving (to within the nearest one-half hour).  Births that could not be estimated within an hour of occurrence were excluded.  Cows were fed forage sorghum hay daily between 4:00 and 6:00 pm.  For statistical purposes, the day was divided into four-hour periods.

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