when body weight at slaughter was included as a covariate , effects of day of the oestrous cycle and pregnancy on uterine width , uterine weight , endometrial surface area and endometrial weight were detected ( p less than 0.01 ) and for uterine length there was a day-by-status interaction ( p less than 0.01 ) .
C0025329
oestrous cycle
C0042149
uterine