Lactic and butyric acids, isolated and associated, as alternatives to avilamycin on the immune response of broiler chickens to Newcastle disease

Autores

  • Paulo Cesar Riquelme Salazar Faculdade de Medicina Veterinária e Zootecnia - FMVZ USP
  • Gustavo do Valle Polycarpo Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Faculdade de Ciências Agrárias e Tecnológicas, Campus de Dracena - SP
  • Julio Cezar Dadalt Faculdade de Medicina Veterinária e Zootecnia - FMVZ USP
  • Pedro de Assunção Pimenta Ribeiro Faculdade de Medicina Veterinária e Zootecnia - FMVZ USP
  • Maria Fernanda de Castro Burbarelli Faculdade de Medicina Veterinária e Zootecnia - FMVZ USP
  • Valquíria Cação Cruz-Polycarpo Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Faculdade de Ciências Agrárias e Tecnológicas, Campus de Dracena - SP
  • Ricardo Albuquerque Faculdade de Medicina Veterinária e Zootecnia - FMVZ USP

DOI:

https://doi.org/10.15361/1984-5529.2018v46n2p194-198

Resumo

The objective of this study was to evaluate lactic and butyric acids as alternatives to avilamycin as growth promot­ers on the immune response of broilers vaccinated against Newcastle disease. Seventy broilers were distributed in a completely randomized design using a 2×2+1 factorial arrangement: presence or absence of lactic acid and butyric acid plus a control treatment with the inclusion of avilamycin, with seven replicates and two birds per experimental unit. Birds were vaccinated against Newcastle disease at 14 days of age. Prior to vaccination        (14 days), at 21 and 35 days, blood samples were collected to detect and quantify antibodies against Newcastle disease virus. At 14 and 21 days, there was no significant effect of treatments on antibody titers. At 35 days, the combination of lactic and butyric acids presented a synergistic effect on the immune response of the birds, provid­ing a higher amount of antibody titers compared to the other treatments. The combined effect of lactic and butyric acids improved the immune response of broilers vaccinated against Newcastle disease at 35 days of age, representing a viable alternative to avilamycin.

Arquivos adicionais

Publicado

14/05/2018

Edição

Seção

Zootecnia - Animal Production