the pre-partum plasma concentrations of progesterone , relaxin , pgf-2 alpha and 13,14-dihydro-15-keto pgf-2 alpha ( pgfm ) were determined in 6 sows treated with meclofenamic acid ( 5.0 mg/kg body wt daily , from day 109 to day 113 of pregnancy ) , and 2 sows which farrowed prematurely .
C0033308
progesterone
C0032961
pregnancy