Resumen de Influencia de la presentación y del nivel de energía del pienso sobre los rendimientos productivos en pollitas de 1 a 35 días de edad
B. Saldaña, P. Guzmán, A. Pérez Bonilla, H.A. Mandalawi, R. Harzalli, G.G. Mateos
The effects of feed form and energy concentration of the diet on productive performance were studied in Lohmann Brown pullets from 1 to 35 d of age. The experiment was completely randomized with 10 treatments arranged factorially with 2 feed forms (mash vs. crumbles) and 5 level of energy (2,850, 2,900, 2,950, 3,000, and 3,050 kcal AMEn/kg). Each treatment was replicated 6 times and the experimental unit was a cage with 50 pullets. Pullets fed crumbles had lower ADFI (P < 0.01) but higher BWG (P < 0.01) and better FCR (P < 0.01) than pullets fed mash. An increase in the energy content of the diet reduced ADFI and increased FCR (P < 0.001) but did not affect BWG. It is concluded that crumbling improved FCR and BWG from 1 to 35 d of age. An increase in the AMEn content of the diet improved FCR of the pullets but BWG was not affected. The utilization of diets in crumble form is recommended in brown-egg laying pullets from 1 to 35 d of age. In addition, the selection of the best level of AMEn to be used in the diets depends on the relative price of available ingredients.
