Which of these conditions is NOT a factor affecting semen viability?

• A. Length of time since collection
• B. Breed of the boar
• C. Storage temperature
• D. Fluctuations in temperature

Answer: (B)

The breed of the boar is not a direct factor affecting semen viability in the way that the other options are. While certain breeds may have different characteristics, such as reproductive efficiency or sperm characteristics, the viability of semen refers more closely to conditions surrounding its collection, storage, and handling rather than inherent breed-specific traits.

Semen viability is primarily influenced by factors such as the length of time since collection, which can affect how fresh the semen is and its potential for successful fertilization. Storage temperature is critical because sperm cells are sensitive to temperature changes, and improper temperatures can lead to decreased motility and viability. Fluctuations in temperature can also harm sperm cells, as they require stable, specific conditions for optimal preservation.

Therefore, while breed characteristics might be important in breeding decisions or reproductive outcomes, they do not directly influence the viability of the semen collected and preserved under controlled conditions.