Studies on the treatment of placental retention in cows using certain drugs

ABSTRACT

The present study aimed to apply certain field medicaments directly postpartum to treat and reduce the incidence of placental retention in cows. A total number of 126 native cows were used in this study. The animals were assigned into two parts 1st with normal [n=100] and 2nd with abnormal [n=26] births. Each main part was divided according to the type of drug used into five groups. The drugs applied and their amounts were 7 ml Methergin [group 1], 10 ml Oxytocin [group 2], 1 ml/50 kg body weight Carazolol [group 3], 5 ml Lutalyse [group 4] and non-treated [group 5]. All the drugs were injected intramuscularly directly after parturition. All the percentages of retention were calculated within 12 hours after parturition except in case of Lutalyse injection. The percentages were calculated after 24 hours from delivery and the mean time between the injection of Carazolol and the placental expulsion was recorded. The results indicated that, the low incidences of placental retention were recorded after Methergin, Carazolol and Oxytocin injection in both normal and abnormal births. The mean time for placental dropping was 5.0 +/- 1.22 and 8.0 +/- 3.5 hours in both normal and abnormal births, respectively. The results of PGF2a proved the low importance of its singular use to treat the placental retention. It was suggested that the routine injection of Methergin, Oxytocin and Carazolol [beta blockers] reduced the placental retention in cows, and it can be taken as a parameter for reproductive efficiency