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Anim Biosci > Accepted Articles
https://doi.org/10.5713/ab.21.0213    [Accepted] Published online August 25, 2021.
Dietary encapsulated Bifidobacterium animalis and Agave fructans improve growth performance, health parameters, and immune response in broiler chickens
María José Hernández-Granados1  , Rosa Isela Ortiz-Basurto2  , Maribel Jiménez-Fernández3  , Carlos Alberto García-Munguía4  , Elena Franco-Robles4,* 
1Maestría en Producción Pecuaria. División de Ciencias de la vida, Campus Irapuato-Salamanca, Universidad de Guanajuato, México, C.P. 36500
2Laboratorio Integral de Investigación en Alimentos. TecNM-Instituto Tecnológico de Tepic. Av. Tecnológico 2595, Lagos del country. C.P. 63175. Tepic, Nayarit. México
3Centro de Investigación y Desarrollo en Alimentos, Universidad Veracruzana
4Departamento de Veterinaria y Zootecnia. División de Ciencias de la Vida, Campus Irapuato-Salamanca, Universidad de Guanajuato, México, C.P. 36500
Correspondence:  Elena Franco-Robles, Tel: +52-626241889, Fax: +52-626241889, Email: e.franco@ugto.mx
Received: 7 May 2021   • Revised: 17 June 2021   • Accepted: 7 May 2021
The present study was conducted to evaluate the effects of dietary supplementation with Bifidobacterium animalis, Agave fructans, and symbiotic of both encapsulated on growth performance, feed efficiency, blood parameters, and immune status in broiler chickens, and to compare these with diets including antibiotic growth promoters and without additives.
A comparative experimental study was carried out with 135 male Ross 308 broiler chickens. Each trial was divided into 5 equal groups. Control group (CON) received a standard diet without growth promoter; GPA: a standard diet with colistin sulfate and zinc bacitracin (0.25 g/kg of feed); PRE: a standard diet with 1% Agave fructans; PRO: a standard diet with Bifidobacterium animalis (11.14±0.70 log CFU/g); SYM: a standard diet with B. animalis and Agave fructans.
A significant decrease in food consumption was found for the GPA, PRE, and SYM, compared to the CON group. The results show a better feed conversion index in PRE and GPA with respect to the CON group with the highest conversion index. Interestingly, the weight of the gastrointestinal tract shows a statistically significant difference between GPA and PRE groups. Moreover, the length of the gastrointestinal tract of the GPA group was less than the PRE group. In the total leukocyte count, there was a statistically significant increase in the GPA group compared to the CON, PRE, and PRO groups, and the H:L index was lower in PRO. Regarding the cytokines, IL-10 decreased in PRO compared to CON and PRE, while IL-1β increased in the SYM group.


Alternative treatments were shown to achieve similar productive results as growth-promoting antibiotics and showed improvement over diet without additives; however, they have immunomodulatory properties and improved the development of the gastrointestinal tract compared to the treatment of growth-promoting antibiotics.
Keywords: Interferon-gamma; Interleukin 10; Leukocytes; Prebiotics; Probiotics; Tumor Necrosis Factor

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