Poultry Diseases

G. D. Butcher

Gary D. Butcher

Gary D. Butcher and Richard D. Miles

Gary D. Butcher, David P. Shapiro, and Richard D. Miles

Gary D. Butcher and Richard Miles

G. D. Butcher, J. P. Jacob, and F. B. Mather

This document is about common diseases affecting poultry, with a focus on respiratory and non-respiratory conditions. It outlines the symptoms, transmission methods, treatment options, and prevention strategies for a wide range of illnesses that impact various bird species, including chickens, turkeys, ducks, and game birds. The information is intended to support poultry health management and biosecurity practices. Original publication date May, 1999.

Gary D. Butcher and Mojtaba Yegani

Gary D. Butcher and Richard M. Miles

Gary D. Butcher and Richard D. Miles

Gary D. Butcher and Richard Miles

Gary D. Butcher and Fred Rossi

Gary D. Butcher and Richard D. Miles

Gary D. Butcher and Curtis Beck

Gary D. Butcher and Richard Miles

Gary D. Butcher

This document is about Mycoplasma gallisepticum (MG), which remains a persistent challenge in the commercial poultry industry worldwide, despite eradication efforts in grandparent stock and turkeys. The organism, fragile outside the host, causes long-term respiratory infections in chickens, complicating control in multi-age flocks. Original publication date May 2002.

J. P. Jacob, G. D. Butcher, F. B. Mather, and R. D. Miles

This document provides an overview of avian influenza in poultry, detailing its history, clinical signs, transmission, and prevention. Avian influenza is a viral disease affecting birds' respiratory, digestive, and nervous systems, with varying pathogenicity. Original publication date April 1998.

Gary D. Butcher, and Richard D. Miles

Gary D. Butcher

Gary D. Butcher, Richard D. Miles, and Amir H. Nilipour

Gary D. Butcher, Amir H. Nilipour, and Richard D. Miles

Gary D. Butcher and Curtis C. Beck

Gary Butcher and Mojtaba Yegani

Gary D. Butcher yMohamed Hossiny

This publication describes common causes of immune suppression in commercial poultry. It aims to instruct those involved with poultry in evaluation of poultry flocks to determine if immunosuppressive diseases are causing losses in those flocks. Written by Gary D. Butcher and Mohamed Hossiny, and published by the UF College of Veterinary Medicine, UF/IFAS Extension, July 2025.

Ashley McLeod-Morin, Benjamin D. Anderson, Glenn Morris, C. Sanders, Colleen Larson, Ricky Telg, yAnnabel Henson

Bird flu is caused by the H5N1 subtype of influenza A virus. Among migratory birds and poultry, this virus can be highly contagious and cause severe disease and death. Biosecurity and proper hygiene significantly reduce this risk. This publication aims to help owners of backyard flocks protect their birds and identify possible signs of influenza H5N1 infection. Written by A. McLeod-Morin, B. D. Anderson, G. Morris, C. Sanders, C. Larson, R. Telg, and A. Henson, and published by the UF/IFAS Department of Animal Sciences, September 2025.

Gary D. Butcher and Mohamed Hossiny

The intended audience for this publication is commercial poultry producers and poultry veterinarians. This publication aims to provide an update and summary of fowl adenovirus hepatitis. Written by Gary D. Butcher and Mohamed Hossiny, and published by the UF College of Veterinary Medicine, UF/IFAS Extension, July 2024.