Fig. 1. Dates of bedding addition (empty symbols) to feedlot pens in relation to rainfall simulations (half-filled symbols) in 1998 and 1999. Pens for bedding addition and rainfall simulations were the same in 1998 (a, b). Pens for bedding addition in 1999 were different than pens for rainfall simulations (c). Mean weight of bedding for three pens in 1999 was used. Weights of bedding applied to all pens in 1999 were similar.