Integration of Pasturing Systems for Cattle Finishing Programs

摘要: A 3-year study, using 84 fall-born and 28 spring-born calves of similar genotypes, was conducted to integrate pasturing systems with drylot feeding systems. Calves were started on test following weaning in May October. Seven treatments imposed: 1) directly into feedlot; 2 3) put pasture or without ionophore moved the feedlot at end July; 4 5) October; 6 7) bromegrass consisting 16 paddocks, each 1.7 acre size, available. Each treatment group had access 1 paddock a time rotated approximately 3-day intervals. In feedlot, steers provided an 82% concentrate diet containing whole-shelled corn, ground alfalfa hay, protein, vitamin mineral supplement molasses. As pens cattle reached about 1150 lb. average live weight, they processed carcass traits evaluated. Pasture daily gains highest for longest duration (P < .03), overall .01) decreased increased spent pasture. Although differences among existed numerical scores yield quality grades .05 P .03, respectively), all grade low Choice higher. Use four production costs pricing scenarios revealed that placed varying lengths most profitable .04) treatments. Furthermore, employing 5% price sensitivity analysis, indicated fed-cattle selling great impact profit potential followed importance by feeder purchase corn grain price. Overall, these findings should provide significant alternatives some segments industry also lend substantial credence concept sustainable agriculture.