Luteal function and embryonic survival in swine

Effect of Reduced Farrowing Interval on Sow Productivity

“…conical centrifuge tube, and evapo rated under nitrogen gas to dryness. Thin layer chromato graphy plates were prepared as described by Schultz (1965) Results and discussion In order to obtain 40 pregnant sows for this experiment it was necessary to observe 63 sows for signs of estrus, Table 13. From 13 to 16 percent of the sows in all groups did not show a detectable estrus immediately after weaning.…”