References

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Borsberry, S. and H. Dobson, 1989. Periparturient diseases and their effect on reproductive performance in five dairy herds. Vet. Rec., 124: 217-219.
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Deluker, H.A., J.M. Gay, L.D. Weaver and S.A. Azari, 1991. Change of milk yield with clinical diseases for a high producing dairy herd. J. Dairy Sci., 74: 436-445.
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Eiler, H. and F.M. Hopkins, 1993. Successful treatment of retained placenta with umbilical cord injections of collagenase in cows. J. Am. Vet. Med. Assoc., 203: 436-443.
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Erb, H.N., R.D. Smith, P.A. Oltenacu, C.L. Guard and R.B. Hillman et al., 1985. Path model of reproductive disorders and performance, milk fever, mastitis, milk yield and culling in Holstein cows. J. Dairy Sci., 68: 3337-3349.
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Garcia, A., A.D. Barth and R.J. Mapletoft, 1992. The effects of treatment with cloprostenol or dinoprost within one hour of induced parturition on the incidence of retained placenta in cattle. Can. Vet. J., 33: 175-183.
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Gardner, I.A., D.W. Hird, W.W. Utterback, C. Danaye-Elmi, B.R. Heron, K.H. Christiansen and W.M. Sischo, 1990. Mortality, morbidity, case-fatality and culling rates for California dairy cattle as evaluated by the national animal health monitoring system, 1986-87. Prev. Vet. Med., 8: 157-170.
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Halpern, N.E., H.N. Erb and R.D. Smith, 1985. Duration of retained fetal membranes and subsequent fertility in dairy cows. Theriogenology, 23: 807-813.
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Herschler, R.C. and J.R. Lawrence, 1984. A prostaglandin analogue for therapy of retained placenta. Vet. Med., 79: 822-826.

Martin, J.M., C.J. Wilcox, J. Moya and E.W. Klebanow, 1986. Effects of retained fetal membranes on milk yield and reproductive performance. J. Dairy Sci., 69: 1166-1168.
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Miller, B.J. and J.R. Lodge, 1984. Postpartum oxytocin treatment for prevention of retained placentas. Theriogenology, 22: 385-388.
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Sandals, W.C.D., R.A. Curtis, J.F. Cote and S.W. Martin, 1979. The effect of retained placenta and metritis complex on reproductive performance in dairy cattle: A case control study. Can. Vet. J., 20: 131-135.
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Stevens, R.D. and R.P. Dinsmore, 1997. Treatment of dairy cows at parturition with prostaglandin F2α or oxytocin for prevention of retained fetal membranes. J. Am. Vet. Med. Assoc., 211: 1280-1284.
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Thurmond, M.C., C.M. Jameson and J.P. Picanso, 1993. Effect of intrauterine antimicrobial treatment in reducing calving-to-conception interval in cows with endometritis. J. Am. Vet. Med. Assoc., 203: 1576-1578.
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Tross, T.S., W.F. Wiolliams and T.W. Moreland, 1986. Prevention of the retained fetal membrane syndrome (retained placenta) during induced calving in dairy cattle. Theriogenology, 26: 365-370.
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Van Werven, T., Y.H. Schukken, J. Lloyd, A. Brand, H.T. Heeringa and M. Shea, 1992. The effects of duration of retained placenta on reproduction, milk production, postpartum disease and culling rate. Theriogenology, 37: 1191-1203.
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