en the third mature cow calved and draw a line. Also draw a line at 42 and 63 days after the third mature cow calved. By counting the number of cows in each segment of the calving book and dividing by the total number of mature cows in the calving book, the percentage of cows calving at 21, 42 and 63 days is calculated.
The first-calf heifers are not included in these calculations because oftentimes the bull turnout dates or artificial insemination days are quite different from those of the mature cows.
Know your facts and you will enjoy the winter meetings.
May you find all your ear tags.
Your comments are always welcome at http://www.BeefTalk.com.
For more information, contact Ringwall at 1041 State Ave., Dickinson, ND 58601, or go to http://www.ag.ndsu.edu/news/columns/beeftalk/.
(Ringwall is a North Dakota State University Extension Service livestock specialist and the Dickinson Research Extension Center director.)
NDSU Agriculture Communication – Dec. 6, 2012
|Source:||Kris Ringwall, (701) 483-2348, ext. 103, email@example.com|
|Editor:||Rich Mattern, (701) 231-6136, firstname.lastname@example.org|