Progesterone-releasing intravaginal device
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Clinical uses of PRID
- Synchronisation of oestrus in conjunction with prostaglandin[2][3] The PGF2α injection helps to ensure there is no residual CL and the potentially ovulating follicle has been held primed for less time, enhancing its viability.
Protocol – PRID for 9 days. PGF2α injection on days 5–8. Serve on observed oestrus or fixed time once at 56h or twice at 48h and 72h.
- Induction of oestrus in anoestrus cows[4]
- Treatment of follicular cysts
- Persistent ovarian follicles
- Improve oocyte quality
- Reduction of early embryonic death and improved fertility
- Treatment of repeat breeders
- Increased fertility in embryo transfer protocols
References
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- ↑ Reproduction in Cattle. A.R. Peters and P.J.H. Ball
- ↑ Deletang et al. (2006). Efficacy of PRID with injection of PGF2a for synchronising oestrus in French dairy and beef cattle. World Biuatric Congress.
- ↑ McPhee et al. (1983). Multiple use of progesterone releasing intravaginal devices for synchronisation of oestrus and ovulation in cattle. Australian Vet Journal, 60 pp. 40–43
- ↑ Tjondronegoro et al. (1987). Effects of progesterone intravaginal devices on synchronisation of oestrus in post-partum dairy cows. Journal of Dairy Sciences,70, pp. 2162–67
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