Excerpts from the report Summary: In-transit shipping losses of live hogs have been a serious problem in the livestock industry. With increased use of motortrucks, the problem has become acute on long-distance shipments made during hot weather. The purpose of the study on which this report is based was to explore the effectiveness of in-transit sprinkling to reduce these losses. During a 3-year period, a series of over-the-road comparison tests were made. The possible advantages of sprinkling on 5-, 11-, and 27-hour motortruck trips were investigated. Mortality (deaths in transit), transit shrink (loss of body weight during transit) , and hot slaughtered yield (weight of hot carcass at completion of slaughtering process) were the criteria used. Various sprinkling systems were designed and tested, and evaluations were made of spraying techniques for each length of trip. This study points to a decided advantage in sprinkling live hogs in transit under certain conditions of time and temperature. It is recommended that any shipper of hogs who operates in summer temperatures above 80° F. consider sprinkling as a means of reducing transit losses.