Abstract
SUMMARY A detailed description is given of the reproductive tract of the sow as felt by rectal examination. Rectal examination was found to have a 94.3% accuracy in determining pregnancy when carried out between 30 and 60 days gestation. Rectal examination was also found to be a sultable method of detecting the onset of oestrus in the sow. The advantages of using rectal examination as a routine procedure to determine pregnancy in commercial sow herds are presented.

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