The haematological profile of female bronze turkeys (Meleagris gallopavo) vaccinated with various commercial strains of Newcastle disease

Authors

  • Elizabeth M.d.S Schmidt São Paulo State University
  • Ivan F.C Santos Eduardo Mondlane University
  • António C Paulillo São Paulo State University
  • Gislaine R.V Martins São Paulo State University
  • Janine Denadai São Paulo State University
  • Ivan M Lapela São Paulo State University

Abstract

The effects of vaccination on avian blood parameters are poorly understood. The present study was designed to evaluate whether different strains (Ulster 2C, B1, live LaSota and inactivated LaSota) of Newcastle disease vaccines had an effect on the haematological profile of female turkeys. Seventy-five female turkeys were allocated to treatment groups according to vaccination strain. All the birds, except those in the control group, were vaccinated at 32 weeks of age and revaccinated at 40 and 48 weeks of age. Blood samples were obtained for haematological analyses and serum samples for the haemagglutination inhibition test.
Haemoglobin concentration was significantly lower (p < 0.05) in vaccinated female turkeys than in the control birds 28 days after vaccination. Monocytes were significantly higher (p < 0.05) in 44-week-old female turkeys vaccinated with inactivated LaSota strain compared with the other groups. Turkeys vaccinated with the B1 strain showed significantly higher (p < 0.05) total white blood cell counts compared with the other groups vaccinated with various commercial strains of the Newcastle disease virus. In conclusion, female turkeys showed significant differences in haemoglobin concentrations, monocytes and white blood cell counts when vaccinated against Newcastle disease.

Author Biographies

  • Elizabeth M.d.S Schmidt, São Paulo State University

    Department of Veterinary Clinic, São Paulo State University, Brazil

  • Ivan F.C Santos, Eduardo Mondlane University

    Department of Veterinary Surgery, Eduardo Mondlane University, Mozambique

  • António C Paulillo, São Paulo State University


    Department of Veterinary Pathology, São Paulo State University, Brazil

  • Gislaine R.V Martins, São Paulo State University

    Department of Veterinary Pathology, São Paulo State University, Brazil

  • Janine Denadai, São Paulo State University

    Department of Veterinary Pathology, São Paulo State University, Brazil

  • Ivan M Lapela, São Paulo State University

    Department of Veterinary Pathology, São Paulo State University, Brazil

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Published

2021-12-09

Issue

Section

Original Research