Table 2. Correlation coefficients among steroidal parameters and temperatures recorded in the rectum and different organs of the reproductive tract over the estrous cycle in beef cows (n=148 paired measurements).
| Parameters | RT | VT | CT | UBT | UHT |
| P4 (a) | 0.19* | 0.27** | 0.31*** | 0.29*** | 0.27** |
| E2 (b) | –0.07 | –0.07 | –0.009 | 0.003 | 0.003 |
| E2:P4 (c) | –0.19* | –0.29*** | –0.32*** | –0.28*** | –0.25** |
P4, Progesterone; E2, Estradiol-17β ; RT, rectal temperature; VT, vaginal temperature; CT, cervical temperature; UBT, uterine body temperature; UHT, uterine horns temperature. (a) Partial correlation coefficient between peripheral P4 concentrations and the different recorded temperatures, controlling for the effect of E2. (b) Partial correlation coefficient between peripheral E2 concentrations and the different recorded temperatures, controlling for the effect of P4. (c) Spearman's correlation between peripheral E2:P4 ratios and the different recorded temperatures. * P<0.05; ** P<0.01; *** P<0.001.