INDIAN VETERINARY JOURNAL, cilt.84, sa.9, ss.969-970, 2007 (SCI-Expanded)
in cattle, the fetal membranes are passed spontaneously within 2-12 hours after labor. When this physiological event fails to occur within the said period of time they are considered as retained placenta (Drillich et al. 2003). Retained placenta is more common in cattle than in other species, and is encountered in 8 % of cows giving normal birth and 25-55% of cows undergoing difficult labor (Laven and Peters, 1996).