* Individual Variation: Bucks are individuals with varying levels of vigor, age, and breeding experience. Some bucks will be more active and breed more frequently than others.
* Doe's Cycle: A doe's estrous cycle, or period of fertility, lasts for about 24 hours. During this time, she'll be receptive to multiple matings.
* Competition: Bucks will compete with each other for access to does. A dominant buck may have more opportunities to breed.
* Environmental Factors: Food availability, weather conditions, and other environmental factors can also play a role in the number of matings.
However, it's common for bucks to breed with a doe multiple times throughout her estrous cycle. This ensures fertilization, as sperm can survive for a few days within the doe's reproductive tract.
To summarize, there's no fixed number. The actual number of times a buck breeds with a doe during rut will vary depending on a variety of factors.