Mature ewes, 110 to 125 days pregnant, had catheters surgically implanted into maternal and foetal blood vessels and electrodes sutured to the myometrium. Electromyographic (EMG) signals were amplified, rectified, integrated and recorded. Between 2 and 12 days before parturition, the EMG pattern comprised bursts of activity that lasted 6.3

TG, Harvey, DL Johnson, HR Tervit, and RAS Welch

Proceedings of the New Zealand Society of Animal Production, Volume 44, , 7-10, 1984
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