Effects of use of brewers bran on some parameters in commercial laying hens | Efectos de la utilizacion del afrecho de cerveceria sobre algunos parametros en ponedoras comerciales

Spanish; Castilian. Con el objetivo de evaluar diferentes niveles de inclusion del afrecho de cervecerfa en ayes intactas y cicotomizadas se desarrollo un experimento con 32 gallinas ponedoras White Leghorn con un peso promedio entre 1450 y 1500g, Yde 78 semanas de edad en condiciones de produccion. Se conformaron dos grupos con dieciseis ayes cada uno: un grupo control y otro de ayes cecotomizadas. Se emplearon cuatro dietas: una control y tres experimentales que contenfan pienso con 10, 20 Y30 % de afrecho de cervecerfa. Se utilizoun diseno factorial 2 x 4, los datos obtenidos se procesaron mediante el programa estadfstico SYSTATy las dlferencias entre medias por la prueba de Tukey. Se determino que no existio interaccion entre los factores en estudio (dieta-animal). Las ayes cecotomizadas tuvieron una mayor humedad de las excretas (68.98 %) con respecto al control (62.19 %; pO.OOl). No hubo influencia sobre el consumo de alimentos, tampoco sobre retencion de la materia seca y el nitrogeno. Elconsumo de grasa fue de 1.29 g/kg.MS en el grupo control. aumentando paulatinamente a 1.49; 1.77 Y 1.86 g/kg.MS en los grupos del 10, 20 y 30 %de inclusion, mientras que en el caso del calcio sucedio 10contrario. Elconsumo de energfa metabolizable se comporto de forma similar al consumo de calcio. La retencion de N fue mayor en los grupos experimentales que en el control (68.34 %). Los grupos del 20 %(74.39) Yel 30 %(74.41 %) difirieron (p 0.05) del control.

English. In order to evaluate different levels of the inclusion of brewers bran in intact and in cecoctomized birds, an experiment was developed with 32 White Leghorn laying whose average weights ranged between 1450 and 1500g. The birds were 78 weeks of age and under production conditions. Two groups of birds. Four diets were used: one control and three cecoctomized which contained feed with 10, 20 and 30% of brewers bran. A 2x4 factorial design was used. The data obtained were processed by means of the SYSTATstatistical program, and the differences between means by the Turkey test. It was determined that there was no interaction between the factors under study (diet-animal). The excretas of cecoctomized birds had a higher humidity cantent (68.98%) with regard to control (62.19%), dry matter and nitrogen (pO.OO1). There was no influence on food consumption and neither on the retention of dry matter and nitrogen. Fat consumption was 1,29 g/kg of dry matter in the control group, slowlyincreasing to 1.49; 1.77, and 1.86g/kg of dry mater in the groups of 10, 20, and 30% of inclusion, while in the case of calcium the opposite ocurred. The metabolizable energy consumtion behaved in a similar manner to that of calcium. The retention of N in the experimental groups was higher than in the control groups (68.34%.The groups of 200..6(74.39) and 30% (74,41%)differered (p0.05) from control.