True or False: The duration of estrus in sows is usually longer than that of gilts.

The statement is true because sows typically experience a longer duration of estrus compared to gilts. Estrus, or heat, is the period during which a female pig is receptive to breeding. In general, sows tend to have a more established reproductive system due to having already produced litters, which can influence the duration of their estrus. Conversely, gilts, being younger and with their first estrus cycles, often have shorter estrus periods as they are still developing their reproductive capabilities. Understanding this difference is important for effective breeding management, as it helps in timing insemination for optimal fertility outcomes. Recognizing the distinct reproductive behaviors between sows and gilts is crucial for successful pig husbandry.