Detection of Estrus-Related Odors in Cows by Trained Dogs

摘要: Four German Shepherd and 2 Labrador Retriever dogs with previous experience in olfactory detection of explosives were trained to detect respond samples from estrous cows. Performance the was tested trials consisting simultaneous presentation swabs vaginas diestrous Seven experiments conducted, each several sessions testing. In first experiment, estrous-diestrous pairs same cow (within-cow comparisons) used repeatedly over successive averaged 8 1.6% correct detections second withincow again, but a different introduced after every 10 trials. The 68.1% experiment. third experiment identical second, except that it took place dairy farmyard setting dogs’ overall score rose 79.5% detections.The fourth, fifthand sixth conducted indoors as two had been. fourth designed make more difficult within-cow changed afterevery trial. 80.7% detections. fifth S cows during 3 sessionsof Each sample estrus paired indiestrusand also diestroussamples other 4 80.9% detectionsof samples. limited number urine diestrouscows correctly identifiedthe estroussamples 77.8% 7, settingwith livecows. Three cows, 1 between Days 6 12 postestrus,were session involved new group 87.3% correctdetections results these indicate specific odor is associated specially can odor.