A case of fowl Adenovirus-8B infection in a tunnel ventilated broiler farm in Central Luzon, Philippines

Issue Date

1-2022

Abstract

Fowl adenovirus (FAdV), a non-enveloped, double stranded DNA virus, causes varying clinical presentations in commercial broiler flocks which include gizzard erosion, hepatitis, and hydropericardium. A commercial broiler farm in Tarlac, Central Luzon, Philippines showed clinical signs indicative of inclusion body hepatitis which also manifested through increased numbers of underweight birds. Serological and molecular diagnostic procedures were carried out to confirm the disease. Serological results showed tentative diagnoses with titers indicative of Infectious Bronchitis, Infectious Bursal Disease, Fowl Adenovirus, and Newcastle Disease. Polymerase chain reaction and sequencing of genes of interest showed positive results for IB B48 strain of the Massachusetts serotype (vaccine strain) and FAdV-8b serotype (field strain) of the species E. Medication program with consideration to impaired liver function, hypovitaminosis, and impaired metabolism was recommended for the succeeding grows. Furthermore, procedures for routine monitoring of the disease and vaccination of the parent stock sources with an inactivated FAdV-4/8 bivalent vaccine were recommended. To the knowledge of the authors, this is the first report of FAdV-8b infection in the Philippines.

Source or Periodical Title

Philippine Journal of Veterinary Medicine

ISSN

0031-7705

Volume

59

Issue

1

Page

74-79

Document Type

Article

Frequency

semi-annually

Physical Description

illustrations; tables

Language

English

En – AGROVOC descriptors

BROILER CHICKENS; FOWLING; ADENOVIRIDAE; POULTRY; POULTRY FARMING; POULTRY FARMS; PCR; NEWCASTLE DISEASE; PHILIPPINES

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