Nearly 200 exhibitors will showcase their products and services to cattle producers across the state at the 37th annual Cattle Raisers Expo during the Texas and Southwestern Cattle Raisers Convention. The Cattle Raisers Expo runs from noon to 7 p.m. Friday, April 4, and 7 a.m. to 6 p.m. Saturday, April 5, at the Henry B. Gonzalez Convention Center in downtown San Antonio. . . .