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Cost of Steer Weight Gain to Rate of Supplementation with Ground Corn on Bermudagrass Pasture

USDA-ARS, Dale Bumpers Small Farms Res. Cent., 6883 Hwy. 23 South, Booneville, AR 72927

View larger version (26K): [in a new window]   Fig. 1. Relationships of in vitro digestible dry matter (IVDDM) and crude protein (CPC) concentration with days on pasture (DOP) for bermudagrass grazed in 1998 and 1999. DM, dry matter.

View larger version (22K): [in a new window]   Fig. 2. Precipitation at the experimental site in 1998 and 1999, and a 43-yr average. Data were collected approximately 1 km from the site.

View larger version (21K): [in a new window]   Fig. 3. Relationships between average daily gain (ADG) and daily supplementation rate for ground corn (CS) fed to steers grazing bermudagrass. MSE, mean square error.

View larger version (35K): [in a new window]   Fig. 4. Trends in costs of additional average daily gain (ADG) from supplementation with ground corn at rates of 0.45, 1.35, and 2.25 kg steer-1 d-1 over a range of corn costs. Corn costs that are equal or lower than points in trend lines were statistically lower (P 0.05) than break-even costs for low [$1.32 kg-1 body weight ($0.60 lb-1 body weight)], intermediate [$1.76 kg-1 body weight ($0.80 lb-1 body weight)], and high [$2.20 kg-1 body weight ($1.00 lb-1 body weight)] cattle selling prices. SEM, standard error of the mean.