BIO-ECONOMIC FEASIBILITY THROUGH SIMULATION OF THREE FINISHING INTENSIVE FEEDING SCENERIES ON GRAZING
The purpose of this study was to bio-economically determinate the feasibility (BF) of three finishing intensive feeding sceneries on grazing under humid tropic conditions through simulation. The intensive grazing system was based on Brachiaria humidicola fertilized plus a supplement (18,0% PC; 3,3 Mcal EM/kg MS and B/. 0,34/kg BF). Three feeding sceneries were evaluated: JAN-APR, MAY-AUG and SEP-DIC. Initial live weight was 375 kg and target final weight of >454 kg. Factors were simulated (FA) by CIP’s LIFE-SIM-BEEF program and their levels were: Energy Cost (CE: 1,59; 5,0; 10,0; 15,0; 18,41% additional to the NRC), Concentrate Consumption (CC: 2,64; 4,0; 6,0; 8,0 and 9,36 kg BF/animal/day) and Stocking Rate (CA: 1,16; 1,5; 2,0; 2,5 and 2,84 AU/ha). Central Composite Design was used for treatments arrangement and analysis of data, and responses variables (VR) were daily weight gain (GDP), final live weight (PVF) and cost of producing one kilogram of meat (CPKG). Lack-of-fit test indicated that data did not adjust well to linear-quadratic with interaction model (P<0,01). Significance of FA model effects varied according to VR. Higher GDP and PVF were related to higher CPKG. With CE level of 10,00%, CC of 9,36 kg BF/animal/day and CA of 2,00 AU/ha, higher GDP and PVF in JAN-DIC scenery were obtained, but higher CPKG in the MAY-AGO scenery. It is feasible to carry out three intensive fattening in finishing grazing with supplementation in one year.
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Instituto de Innovación Agropecuaria de Panamá
2023
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| Online Access: | http://www.revistacienciaagropecuaria.ac.pa/index.php/ciencia-agropecuaria/article/view/614 |
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