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A surge of luteinizing hormone (LH) is precipitated by a fall in estrogen:progesterone ratio and is responsible for ovulation and luteinization of follicular theca and/or granulosa cells to luteal cells which produce progesterone. All progesterone is luteal. LH and prolactin are luteotrophs.
25 sie 2024 · Timing dog breeding with the LH surge chart is one of the most effective ways to ensure successful conception. By understanding the hormonal changes in your dog’s cycle and utilizing the LH surge as a guide, you can plan breeding sessions with precision.
25 sie 2024 · The LH surge chart is an invaluable tool for dog breeders, providing a roadmap to the most fertile days in your dog’s cycle. By understanding and tracking progesterone levels, you can make informed decisions about when to breed, increasing the likelihood of a successful and healthy litter.
1 kwi 2010 · The LH surge is the key timing event dictating days of peak fertility. Ovulation begins 2 days post-LH surge and continues for another day or so. Ova mature and are capable of fertilization 2 days later.
Two DA treatments reported to be effective have included bromocriptine (Parlodel) at 0.05.or 0.1 mg/kg, p.o., q.d. or bid, and cabergoline (Galostop) at 5 ug/kg, p.o, q.d.; administration is until an induced proestrus is pronounced for 2 days or until the onset of estrus.
4 cze 2009 · Dogs: Give 5 μg/kg/d orally × 5 days at 40 days after LH surge, less effective if earlier. Available as 0.5-mg tabs: Vomiting, fetal expulsion if given after day 40, few adverse side effects. Successful breeding after abortion, expensive, 100% effective if given at ≥40 days. Abortion in 7 to 10 days.
The LH surge triggers ovulation, making it the central endocrinologic event in the reproductive cycle of female dogs. Daily serial measurement of LH to identify the exact date of the LH surge is an accurate diagnostic tool to time breedings.
