Application of near infrared spectroscopy of feces to discriminate between pregnant and not pregnant female captive giant pandas (Ailuropoda melanoleuca) housed in US zoos.

aResults are reported as: % correct identifications (number correct/group total). Preg=pregnant, not=not pregnant, A, B=random group.bRefers to the prediction of group membership for each sample in the calibration set itself.cRefers to the prediction of group membership for each sample in the validation set. NA=not applicable, i.e. there were no validation samples removed from the calibration, or in the case of pregnant validation samples, none were available.†Percentage of correct versus incorrect identifications differ (P