[Effect of added protected fat or bypass protein on performance in finishing brahman bulls] | Efecto de la inclusion de grasa o proteina de escape ruminal en el comportamiento de toretes brahman en engorda

Inglés. 59 Brahman bulls (234+-18 kg BW) were fed a corn-milo-poultry litter based diet in a 121-d experiment, to study the effect of added 2% of bone and meat meal (MBM) and (or )1% of protected animal fat (PAF) on performance, and hot carcass yield. Compared to the animals not receiving the MBM, bulls fed the MBM gained more weight during the initial phase (0-23d) of the trial. Addition of MBM improved (p0.05) ADG (0-121 d) of animals fed GAP. The DMI/ADG, hot carcass weight (HCW) and yield unshrunk at slaughter were not affected by treatments. Results suggest that MBM improveed ADG during the initial phase of finishing. However, animal performance during whole trail was not improved by inclusion of MBM of PAF

Español; castellano. 59 toretes Brahman (234+-18 kg. peso vivo) fueron alimentados durante 121 dias (d), con dietas basadas en grano de maiz, grano de sorgo y pollinaza, para determinar el efecto de la inclusion del 2% de harina de carne y hueso (HCH), y (o) del 1% de grasa animal protegida (GAP) en el consumo diario de materia seca (CMS), el comportamiento en corral, y el rendimiento en canal caliente. Comparados con los animales alimentados con HCH o GAP, los toretes que consumieron la dieta COM mejoraron (p0.05) la GDP (0-121 d), sin afectar (P0.10) la conversion alimenticia. La HCH, GAP o su combinacion no afecto el peso de la canal caliente. Los resultados indican una buena repuesta a la inclusion de proteina (HCH) durante la etapa inicial de la engorda, sin embargo el comportamiento animal no se mejoro con los niveles utilizados de GAP o HCH