The Visual Guide to
Caprine Reproduction
Estrus Detection: Estrus Detection Aids
Teasing Through the Fence.
The buck is trying to detect pheromones, indicative of estrus, by sniffing the vulva and possible vaginal secretions. The doe's behavior, standing near the fence and tail wagging, is strongly suggestive of estrus. The urine stains on the buck's beard and front legs indicate that he has been sexually aroused in recent weeks.
Smith MC (2006)
Teaser Buck.
Teaser animal. Looking for activity in adjacent doe pen.
Smith MC (2006)
Courtship Behavior.
The buck is inspecting the doe for signs of estrus, including a pheromone check.
Smith MC (2006)
Checking for Pheromones.
The buck is sniffing the doe for pheromones and evidence that she is in estrus.
Smith MC (2006)
Pheromone Collection.
Pheromones are collected with a buck rag from the scent glands located caudomedial to the base of the horns.
Smith MC (2006)
Pheromones.
A buck rag is presented to a doe to elicit signs of estrus.
Smith MC (2006)
Subcutaneous Implant.
A progesterone implant is placed under the skin at the ventral base of the tail. Implants suitable for synchronization are currently not available in the United States.
Drost M (1982)
Stuck Vaginal Sponge.
A vaginal sponge was forced into the vaginal wall where it became abcessed and could not be withdrawn. The sponge contained progesterone to control the estrous cycle. The uterus on the left is normal for comparison.
Villarroel A (2011)
Buck During Breeding Season.
The yellow to brown color on the legs, beard, and face is the result of the buck urinating on himself during sexual arousal.
Smith MC (2006)