Evaluación del efecto de un biológico recombinante mediante inmunización para Gumboro y Newcastle en pollos de engorde

Newcastle (ND) and Gumboro (IBD) diseases pose a significant threat to the poultry industry due to their high morbidity and mortality, generating substantial economic losses. This study evaluated the immunological response and productive impact in broilers vaccinated with INNOVAX ND IBD® recombinant biological in incubator (day 1) by subcutaneous administration. Serological follow-up was carried out by measuring antibody titers at different stages of development, in addition to the histopathological analysis of the Fabricio’s bag. The results indicated elevated levels of antibodies from day one, reaching optimal values in week four and remaining until day 49. Histologically, Fabricio’s bag showed adequate structural preservation, with an average size of 5.5 mm and an average injury of 4.25 on the tissue damage scale. The bursa-bazo ratio remained stable at 2:1 until day 28, showing effective immunological functionality. In terms of production, vaccinated chickens reached an average final weight of 3.26 kg, with a feed conversion rate of 1.68 and a mortality of 3.2%, competitive values in commercial poultry farming. These findings confirm the efficacy of the recombinant vaccine in inducing a robust immune response against ND and IBD, without compromising zootechnical performance, which makes it an efficient alternative for health control in intensive poultry production.

• 1. Verfasser: Chifla García, Nadia Zulay (author)
• Format: bachelorThesis
• Veröffentlicht: 2025
• Schlagworte: AVICULTURA; INMUNIZACIÓN; VACUNA RECOMBINANTE; NEWCASTLE; GUMBORO; BOLSA DE FABRICIO; PARÁMETROS
• Online Zugang: https://dspace.ueb.edu.ec/handle/123456789/8601