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Heat stress shortens summer, fall gestation
A two-year study by Oklahoma State University professor Bob Wetteman shows that heat stress can significantly shorten gestation length in early fall calving cows and heifers. Wetteman monitored gestation length for a group of 50 Angus-Hereford cross “early” (August) and “late” (October) fall-calving cows. Wetteman found that when subjected to the stress of hot days in late summer, cows tended to have shorter gestation lengths than cows bred to...
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