What progesterone is needed for breeding dogs? - briefly
Progesterone plays a crucial role in canine reproduction by preparing the female dog's body for pregnancy and maintaining the health of the fetus. For successful breeding, progesterone levels should ideally be above 5 ng/mL when introducing the male to ensure optimal fertilization.
What progesterone is needed for breeding dogs? - in detail
Progesterone plays a crucial role in the reproductive cycle of female dogs, and understanding its significance is vital for successful breeding.
Progesterone is a hormone produced by the ovaries after ovulation. In dogs, the estrous cycle typically consists of four phases: proestrus, estrus, diestrus, and anestrus. Progesterone levels begin to rise during the proestrus phase but reach their peak during the diestrus phase, which is approximately 9-10 days after ovulation.
For breeding purposes, it's essential to monitor progesterone levels closely. This monitoring helps in identifying the optimal time for breeding, known as the "Luteal Phase." During this phase, the dog's body prepares for potential pregnancy by maintaining a high level of progesterone.
Veterinarians typically use blood tests to measure progesterone levels. The ideal progesterone concentration for breeding varies depending on the study, but generally, it should be above 5 ng/mL and ideally around 10-20 ng/mL. Maintaining these levels ensures that the dog's uterus is receptive to implantation of fertilized eggs.
In addition to its role in pregnancy preparation, progesterone helps maintain the pregnancy by preventing further ovulation and supporting the development of the placenta. If progesterone levels drop below the critical threshold during early pregnancy, it can lead to embryonic loss.
Therefore, when planning a breeding program for dogs, regular progesterone testing is essential. This practice not only increases the chances of successful conception but also supports a healthy pregnancy and whelping process.