Effect of Yimusan on the delivery capacity of parturient sows

WANG Qihuan;TENG Kedao;LIU Fenghua;QIN Limeng;ZHANG Wenjun;XU Jianqin;MA Yunfei;College of Veterinary Medicine,China Agricultural University;College of Animal Science and Technology,Beijing University of Agriculture;

Yimusan;;stage of labor;;oxytocin;;prostaglandin E2(PGE2);;stillbirth rate;;average litter size

To explore the effect of Yimusan on the delivery capacity of parturient sows,80 parturient Landrace sows were randomly divided into the control group and the low-,medium-and high-dose Yimusan groups. An ELISA method was used to detect the contents of serum oxytocin(OT) and prostaglandin E_2(PGE_2) before delivery,and the stage of labor,stillbirth rate,and the average litter size were also counted.The results showed that compared with the control group,the stages of labor in the medium-and high-dose Yimusan groups were extremely significantly shortened(P < 0. 01),and the stillbirth rate was significantly reduced(P < 0. 05),and the rate of healthy piglets was significantly increased(P < 0. 05); there were no significant differences(P > 0. 05) in the average litter size,mummy rate and weak litter size in the three doses of Yimusan groups compared with the control group. The contents of OT and PGE2 in the medium-and high-dose Yimusan groups were significantly increased(P < 0. 05) compared with the control group,respectively. The results indicate that Yimusan has a significant role in promoting the delivery capacity of parturient sows.