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- Title
Comportamiento productivo y respuesta inmune de pollos alimentados con dietas sorgo-soya con y sin aflatoxina y paredes celulares de levadura (Saccharomyces cerevisiae).
- Authors
Verduzco, Gabriela Gómez; Cuevas, Arturo Cortés; Coelloa, Carlos López; Menocal, José Arce; Pelaez, Carlos Vásquez; González, Ernesto Avila
- Abstract
Two experiments were conducted on broilers Ross 308 fed sorghum-soybean meal diets. In Exp 1, broilers from 0 to 49 d of age were used in a completely randomized design with four treatments and three replicates of 36 chicks each one, the treatments were: 1) Control diet, 2) As 1+wall cell yeast (YWC), 3)As 1+Bacitracine zinc 30 ppm (GPA) and 4) As 1+YWC+GPA. The YWC and GPA improved at 49 d the weight gain (P<0.05), being greater the effect when the YWC + GPA. The cell immune response evaluated by the basophilic hypersensibility test and the humoral immune response measured by antibodies titers against Newcastle disease (ND) (P<0.05), the YWC ameliorated the response. The addition of YWC and GPA increased (P<0.05) the duodenal villi length measured at the 21 d age. In Experiment 2, Ross broilers from 1 to 21 d of age were fed diets contaminated or not with aflatoxin B1 (AFB1). A completely randomized design 2 x 2 factorial arrangement with six repetitions of six chickens each one were used. The factors were presence or absence of 0.05% YWC and presence or absence of AFB1 (400 mg/t). The 21 d of age data for weight gain, feed intake, feed conversion were similar (P>0.05) for both factors; nevertheless the humoral immune response against NCD and the cellular immune response increased (P<0.05) with YWC and decreased with AFB1.These data indicated that the YWC added in sorghum-soybean meal diets improve the growth and increase the cellular and humoral immune response of broilers.
- Subjects
YEAST physiology; AFLATOXINS; BACITRACIN; BROILER chickens; IMMUNE response
- Publication
Técnica Pecuaria en México, 2009, Vol 47, Issue 3, p285
- ISSN
0040-1889
- Publication type
Article