INTERRELATIONSHIP BETWEEN VAGINAL MUCUS RESISTANCE, RECTAL AND VAGINAL TEMPERATURE AND PREOVULATORY LH PEAK AND OVULATION IN COWS

摘要

The usefulness of simple physical methods for preovulatory LH peak detection was tested in 9 heifers. This detection was positively correlated with an increase in rectal temperature (r=0.832, P<0.01), a minimum in vaginal resistance (r=0.824, P<0.01), and increase in vaginal temperature (r=0.756, P<0.01) and the occurrence of first signs of the standing estrus (r=0.554).