Best Time for Semen Collection

Semen collection should be done during which time for best results?

Correct Answer: Morning before feeding

The best time for semen collection from bulls is in the morning before feeding. The bull is well-rested after the night, the ambient temperature is cooler in the morning, and fasting briefly before collection helps prevent digestive discomfort during mounting activity.

Practical Protocol for Semen Collection

• Timing: Morning before feeding
• Season: Winter gives best quality
• Method: Artificial vagina (AV) — most preferred method in bulls
• False mounting: Allowing 2–3 false mounts before actual collection increases sperm concentration and libido-based quality.
• Collection frequency: 2–3 times per week for optimum output

Types of Artificial Vagina (AV) for Bulls

• Russian AV (most commonly used in bulls)
• Danish model (for bulls)
• Norwegian model (for boars)
• Mississippi model (for stallions)