Studies on the Farrowing Inducction of Sow with Prostaglandin $F_2\alpha$ II. Health and Growth of Piglets Artificially borne by the Prostaglandin F2$\alpha$ Administration

Prostaglandin $F_2\alpha$ 투여에 의한 돼지의 분만유기에 관한 연구 II. 유기분만자돈의 건강과 발육

This experiment was conducted to clarity the possibility of practical use of farrowing inductionin sow by the administration of prostaglandin F2$\alpha$. For this experiment, total 320 heads of pregnant sow and its piglets were used. The reproductive characteristics of artificially farrowed sow and, health and growth state of piglets were estimated. The results obtained in this experiment were summarized as following: 1. No significant difference were observed between naturally and artifically farrowed sow in several aspects such as the rate of dystocia, length of farrowing, farrowing intervals from piglet to piglet. 2. significant (P<0.05) differences were observed between naturally and artificially farrowed sow in intervals from weaning to estrus. However, there were no significant differences among those of 5, 7.5 and 10mg treated group. 3. There were no differences in number of stillbirth, immature birth and alive piglets at 3 weeks age per litter were observed. 4. Similar birth weight, weaning weight, daily gain and rearing rate of piglets were obtained from both naturally and artificially farrowing.