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Influence of different therapy approaches: With or without manual extraction - of retained placenta on reproductive performance in Simmental cows

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Author(s): Đuricic D. | Vince S. | Grizelj J. | Dobranic T. | Lipar Marija | Samardzija M.

Journal: Acta Veterinaria
ISSN 0567-8315

Volume: 61;
Issue: 5-6;
Start page: 599;
Date: 2011;
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Keywords: days open | manual extraction | retained placenta | Simmental cow

ABSTRACT
The aim of the research was to determine the influence of different methods used in the therapy of retained placenta on conception rate and duration of days open in cows. Research was performed on 241 Simmental cows aged 2-8 years divided in three groups. The first group of cows (group A) (n=82) with retained placenta was treated with manual extraction of placenta 12-24 h after parturition combined with application of intrauterine antibiotics. The second group (group B) (n=79) with retained placenta was treated with intrauterine antibiotics only 12-24 h after parturition and repeated 2-3 times in 48 h intervals. The third group (group C) (n=80) was the control group and had physiological puerperium (without retained placenta). To assess the reproductive performance of Simmental cows, interval from calving to first insemination (days open to first service, DOFS), interval from calving to pregnancy (days open to pregnancy, DOP), relative pregnancy rate (%), first service conception rate (FSCR, %) and all service conception rate (ASCR, %) were measured. The estimate of hazard ratio for DOFS in group A relative to cows in group B was 2.20 (p
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