273 - Effect of Bioadditives on the Bioproductive Behavior and Histomorphometric Changes of cobb-500 Chicks

El objetivo de este estudio fue evaluar la acción probiótica de dos bioaditivos y su comportamiento sobre los parámetros bioproductivos y cambios histomorfométricos de pollos CoBB-500, en los primeros 21 días de edad. Se utilizaron 450 pollitos Cobb-500, distribuidos en tres grupos de 150 animales cada uno. Control (T1); cultivo microbiano A (T2) y cultivo microbiano B (T3). Sustrato T2 (melaza-vinaza) fermentado con Lactobacillus acidophillus, L. bulgariccus spp. T3 (melaza-vinaza) fermentada con Saccharomyces cerevisiae y Kluyveromyces fragilis (L-4 UCLV). A completely randomized design was used to evaluate live weight, mean daily gain, diarrheal incidence, mortality, relative weight of the digestive tract organs, and histomorphometric changes. In the evaluations carried out at 21 days of age, the weight gain in the chicks that consumed biopreparations (T2 and T3) was higher (P > 0.05). Chickens that consumed biopreparation did not die during the study. The relative weight of the digestive tract organs was higher (P < 0.001) in treatments T2 and T3. The length and width of the villi were better in groups T2 and T3 (P < 0.05), the depth of the crypts was greater (P < 0.05) in T1. Regarding the depth / length relationship of the villi T2 and T3 it was better (P < 0.05). It concludes that the inclusion of biopreparations in chicken feed improves weight gain, development and growth of organs of digestive importance. Likewise, a reduction in the occurrence of diarrhea and animal mortality is achieved.