multiparity

multiparity

1

There was no difference on pregnancy rate of multiparity and nulliparity ( P > 0.05 ) .

育成牛和经产牛的胚胎移植妊娠率差异不显著（P>0.05）。
2

High risk factor is that premature birth , asphyxia and jaundice is main . Factor before brith such as low birth weight newborn , infection in pregnancy and multiparity become more and more important .

在高危因素中以早产、窒息、黄疸为主，低体重、孕期感染、多胎等产前因素成为日益重要的因素。
3

The demi-embryos development rates of yeanling group ( including morulae 、 blastocyst ) were higher than multiparity sheep group ( 68 . 8 % vs68 . 2 % x 85 . 7 % vs81 . 8 % , P > 0.05 ) .

育成羊组（含桑葚胚、囊胚）分割胚的囊胚发育率都高于经产羊组，但差异不显著（68.8%vs68.2%、85.7%vs81.8%，P>0.05）。