PRODUCTIVE PERFORMANCE OF GROWING PIGS FEED WITH DIFFERENT LEVELS OF INCLUSION OF A PROTEIN CONCENTRATE (PROTILEN ω3) TO SUBSTITUTE SOYA MEAL IN GROWTH FEED | COMPORTAMIENTO PRODUCTIVO DE CERDOS EN CRECIMIENTO ALIMENTADOS CON DIFERENTES NIVELES DE INCLUSION DE UN CONCENTRADO PROTEICO (PROTILN ω3) EN SUSTITUCIN DE LA HARINA DE SOYA EN EL PIENSO DE CRECIMIENTO

Spanish; Castilian. Se utilizaron 30 cerdos del cruce comercial Yorkshire-Landrace x CC21, hembras y machos castrados, con 90 das de edad y 29 kg de peso vivo promedio, para conocer los rasgos de comportamiento productivo al utilizar un concentrado proteico espaol (Protiln ω3) en diferentes niveles de inclusin en dietas para cerdos en crecimiento. Los animales se distribuyeron acorde a un diseo completamente aleatorizado en tres tratamientos experimentales, los cuales fueron: I- tratamiento control (alimentacin de los cerdos con una dieta convencional basada en harinas de maz y soya), un segundo (II) y tercer (III) tratamiento, donde se sustituy la harina de soya en la dieta por el concentrado proteico espaol en un 33 % y 66 % respectivamente. Se demostr que hubo diferencias significativas (P0.001) en los rasgos de comportamiento productivo de los animales entre los tratamientos. Los cerdos que consumieron el concentrado proteico Protiln ω3 (tratamiento II y III) mejoraron considerablemente sus ganancias medias diarias (647 vs 666 vs 704 g/da respectivamente) y sus conversiones alimentarias (3.07 vs 2.96 vs 2.75). Los cerdos del tratamiento en el que se incluy el 33 % de Protiln ω3 en la dieta tuvieron un peso final menor que los animales del tratamiento control (61.05 kg vs 60.85 kg), pero realizaron un menor consumo de alimento y mostraron mejores ganancias medias diarias y conversiones alimentarias. Se concluye que los resultados alcanzados son muy satisfactorios para las condiciones de nuestro pas y similares a los obtenidos en diferentes estudios realizados anteriormente en el mbito nacional e internacional

English. 30 pigs of the commercial Yorkshire-Landrace x CC21 cross, female and castrated males, with 90 days of age and 29 kg of average live weight, were used to know the traits of productive performance when using a spanish protein concentrate (Protiln ω3) at different levels of inclusion in diets for growing pigs. The animals were distributed according to a completely randomized design in three experimental treatments, which were: I- control treatment (feeding the pigs with a conventional diet based on corn and soybean meals), a second (II) and third (III) treatment, where soybean meal was substituted in the diet for the spanish protein concentrate in 33% and 66% respectively. It was demonstrated that there were significant differences (P 0.001) in the productive performance traits of the animals between the treatments. The pigs that consumed the protein concentrate Protiln ω3 (treatment II and III) considerably improved their average daily gains (647 vs 666 vs 704 g/day respectively) and their feed conversions (3.07 vs 2.96 vs 2.75). The pigs of the treatment in which 33% of Protiln ω3 was included in the diet had a lower final weight than the animals of the control treatment (61.05 kg vs 60.85 kg), but they had a lower feed consumption and showed better average daily gains and food conversions. It is concluded that the results achieved are very satisfactory for the conditions of our country and similar to those obtained in different studies previously carried out at the national and international level.