RECTAL DIGESTIBILITY IN PIGS OF 30 TO 60 KG OF LIVE WEIGHT FEED WITH DIFFERENT LEVELS OF INCLUSION OF A PROTEIN CONCENTRATE (PROTILEN ω3) IN REPLACEMENT OF SOY FLOUR IN THE GROWTH FEED | DIGESTIBILIDAD RECTAL EN CERDOS DE 30 A 60 KG DE PESO VIVO ALIMENTADOS CON DIFERENTES NIVELES DE INCLUSION DE UN CONCENTRADO PROTEICO (PROTILEN ω3) EN SUSTITUCIN DE LA HARINA DE SOYA EN EL PIENSO DE CRECIMIENTO

Spanish; Castilian. Se utilizaron 18 cerdos CC21 x Yorkland, machos castrados con un peso vivo promedio de 30 kg y aproximadamente 90 das de edad. Estos animales se distribuyeron segn un diseo de doble cuadrado latino 3 x 3 en tres tratamientos. Los cerdos fueron alimentados con dietas basadas en cereales y harina de Soya, asignadas aleatoriamente, en las que se sustituy el 0, 33 y 66% de la protena de la dieta por un concentrado proteico de origen espaol nombrado Protilen ω3. Se realiz una prueba de digestibilidad rectal. Se determin el contenido de materia seca, ceniza y nitrgeno en los alimentos y heces fecales. Se midieron, adems, los coeficientes de utilizacin digestiva de la materia seca, el nitrgeno, materia orgnica y la ceniza. Se encontr que la concentracin de materia seca fecal creci significativamente (p0.01) desde 31.23 hasta 35.80%. Este mismo patrn de concentracin de nitrgeno tambin rigi para nitrgeno fecal, este pas de 5.62 a 7.31 (p0.05) cuando el porcentaje de Protilen ω3 en el alimento pas de 0 a 66%. No hubo diferencias significativas en los ndices digestivos. Hubo una influencia algo menor (p0.05) en la digestibilidad de la materia seca, posiblemente por el grado de dispersin que se observ en este indicador. Se concluye que la digestibilidad de la materia seca y el nitrgeno evaluados en dietas donde se incluye el concentrado proteico de origen espaol Protilen ω3 al 33 y 66% es alta y esto es debido a la calidad de las materias primas utilizadas.

English. Eighteen CC21 x Yorkland pigs, castrated males with an average live weight of 30 kg and approximately 90 days of age, were used. These animals were distributed according to a Latin 3 x 3 double square design in three treatments. The pigs were fed diets based on cereals and soybean meal, randomly assigned, in which 0, 33 and 66% of the protein in the diet were replaced by a protein concentrate of Spanish origin named Protilen ω3. A rectal digestibility test was performed, determining the dry matter, ash and nitrogen content in food and faeces. The digestive utilization coefficients of dry matter, nitrogen, organic matter and ash were also measured It was found that the fecal dry matter concentration increased significantly (p0.01) from 31.23 to 35.80%. This same pattern of Nitrogen concentration also applied to Fecal Nitrogen, which went from 5.62 to 7.31 (p0.05) when the percentage of Protilen ω3 in the food went from 0 to 66%. There were no significant differences in digestive indices. There was a somewhat minor influence (p0.05) on dry matter digestibility, possibly due to the degree of dispersion observed in this indicator. It is concluded that the digestibility of dry matter and nitrogen evaluated in diets where the protein concentrate of Spanish origin Protilen ω3 is included at 33 and 66% is high and this is due to the quality of the raw materials used.