Sows were injected with hcg 2 days after removal of the litter and were examined at laparotomy for evidence of ovulation at varying intervals from 36 to 44 hr after injection. Ovulation was found to occur about 40 hr after injection. hcg-treated sows shed more eggs than untreated sows. Most treated sows failed to show heat within 6 days of removal of the litter, in contrast with untreated sows.
If the inline PDF is not rendering correctly, you can download the PDF file here.