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Relationship Of Relative Calving Date Of Beef Heifers To Production Efficiency And Subsequent Reproductive Performance, D.M. Marshall, W. Minqiang, B. A. Freking
Relationship Of Relative Calving Date Of Beef Heifers To Production Efficiency And Subsequent Reproductive Performance, D.M. Marshall, W. Minqiang, B. A. Freking
South Dakota Beef Report, 1989
Relative date of first calving of beef heifers was studied in relation to production efficiency and subsequent reproductive performance. Crossbred heifers were managed in drylot for 1 year, providing for measurement of feed intake through weaning of the first calf. Production traits were evaluated by calving group (CG), where CG1 included records of heifers calving (and calves born) in the first 21 days of the calving season for a particular year, CG2 included those calving from 22 through 42 days and CG3 included those calving after 42 days. Calving groups did not differ significantly for preweaning calf average daily gain, …