A simulation model for grazing and finishing steers on mixed farms in the Araucania Region
1992
Catrileo S, Adrian (Instituto de Investigaciones Agropecuarias, Temuco (Chile). Estacion Experimental Carillanca)
In order to simulate grazing, a fixed number of paddocks rotationally grazed is assigned. Dry matter intake, selection and supplementation are among the factors included to predict animal performance. Validation of the model showed a trend to overestimate conserved forage from the system and the performance of the steers in the feedlot. Simulated animal performance during the grazing period showed a reasonable coincidence with field experiments. Using the model, a potential beef production in the range of 700 to 900 kg/ha is estimated with stocking rates of 2.0 to 2.6 steers/ha respectively, in the dryland of the IX Region, Temuco. A delay in the date of conservation increased the total amount of conserved forage, however, although this meant a longer period of the steers in the feedlot. Changing selling and buying prices of the steers affected total income of the system
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