الفهرس 
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Abstract
This study was applied for Prevention of Retention of the placenta phenomenon in Cows and treatment of this phenomenon where this study divided into two branches I- prevention groups: 101 Friesian pregnant cows were confirmed to be pregnant between 7 – 9 months by rectal palpation. They had a history of retained placenta in one of the previous parturitions and divided into six groups. The First group. Including 18 Frisian cows received no medicaments and considered as a control group. The Second group. Including 19 Frisian cows were infused with 500 ml of Cal De Mag i/v two months before parturition. The Third group. Including 15 Frisian cows 30 days before parturition were injected with 40 ml of vit B2. The fourth group. Including 15 Frisian cows 30 days before parturition were injected i/m with 20 ml of vitaselin The Fifth group. Including 19 Frisian cows immediately after parturition (by 2 hours) were injected with 50 iu (5ml) of oxytocin i/m. The Six group. Including 15 Frisian cows immediately after parturition were injected with estrumate 2.5 ml i/m. II-Treatment groups: This study was conducted on 41 Friesian cows and divided into two groups. The First group. Including 20 Friesian cows were expelled the placenta after parturition normally and considered as a control group. The Second group. Including 21 Friesian cows showed retained placenta were treated by manual removal of the placenta followed by intrauterine insertion of oxytetracycline Hcl tablets. from the Previous study the important results are the following : 1- Infusion of Calcium and injection of vitamin B2, vitamin E& selenium in a dry period, and injection of hormones like oxytocin& PGF2α immediately after parturition, significantly reduce the incidence of RFM in Friesian cows. 2- The manual removal of RFM plus intrauterine insertion of oxytetracycline tablets was ineffective in treatment of RFM and affect negatively on subsequent fertility.