Gary D. Butcher

0000-0002-8930-5809

Intestinal and Tracheal Parasites of Poultry

Gary D. Butcher and Michael A. Davis

Enfermedades Aviares Transmisibles a Humanos

Michael A. Davis, Gary D. Butcher y F. Ben Mather

Las personas que interactúen con aves ya sea como mascotas o como animales de producción, deben informarse sobre ciertas enfermedades aviares zoonóticas. Este tipo de enfermedades pueden transmitirse de animales a humanos. Los humanos rara vez contraen enfermedades aviares y no deben desanimarse de criar aves porque estas enfermedades no representan una amenaza grave para la mayoría de las personas. Sin embargo, los propietarios de aves deben estar informados sobre enfermedades zoonóticas y buscar asistencia médica si sospechan que pueden haber contraído una enfermedad de un ave. Este documento es PS23-Span, una publicación del Department of Animal Sciences, UF/IFAS Extension. Fecha original de publicación: abril 2025.

Avian Diseases Transmissible to Humans

Michael A. Davis, Gary D. Butcher, and F. Ben Mather

Factors Affecting Egg Production in Backyard Chicken Flocks

Jacqueline P. Jacob, Henry R. Wilson, Richard D. Miles, Gary D. Butcher, and F. Ben Mather

This document is about the various factors that influence egg production in backyard chicken flocks. It outlines both noninfectious and infectious causes of reduced productivity, including nutritional deficiencies, environmental stressors, parasites, diseases, and management practices. The guide provides practical insights for identifying and addressing issues that may lead to a decline in egg output, helping poultry keepers maintain healthy and productive flocks. Original publication date April 1998.

Avian Influenza in Poultry

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.

Mycoplasma Gallisepticum - A Continuing Problem in Commercial Poultry

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.

Infectious Bronchitis Virus: Classical and Variant Strains

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

Common Poultry Diseases

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.

Chicken Anemia Agent (CAA)

Gary D. Butcher

Disease Prevention in Commercial Aviaries

Gary D. Butcher and Richard D. Miles

Avian Necropsy Techniques

Gary D. Butcher and Richard D. Miles

Disease Prevention in Commercial Poultry

Gary D. Butcher and Richard D. Miles

Concepts of Eggshell Quality

Gary D. Butcher and Richard Miles

Infectious Bronchitis and Its Effect on Egg Production and Egg Quality

Gary D. Butcher and Richard Miles

Intestinal Parasites in Backyard Chicken Flocks

Gary D. Butcher and Richard D. Miles

The Avian Immune System

Gary D. Butcher and Richard D. Miles

Salmonella Control and Molting of Egg-Laying Flocks—Are They Compatible?

Gary D. Butcher and Richard Miles

Heat Stress Management in Broilers

Gary D. Butcher and Richard Miles

Causes and Prevention of Wet Litter in Broiler Houses

Gary D. Butcher and Richard D. Miles

Prevention and Control of Fowl Pox in Backyard Chicken Flocks

Gary D. Butcher and Fred Rossi

Knemidokiptic Mange in Pet Birds: Scaly Face and Scaly Leg Disease

Gary D. Butcher and Curtis Beck

Infectious Bursal Disease (Gumboro) in Commercial Broilers

Gary D. Butcher and Richard D. Miles

Avian Goiter (Thyroid Hyperplasia or Dysplasia)

Gary D. Butcher and Curtis C. Beck

St. Louis Encephalitis—The Role of Chickens

Gary D. Butcher and Richard Miles

Improved Aviculture Management May Prevent Candidiasis in Birds

Gary D. Butcher and Richard D. Miles

Pigeon Canker

G. D. Butcher

Diagnosis, Prevention, and Control of French Molt

Gary D. Butcher and Richard M. Miles

Egg Specific Gravity—Designing a Monitoring Program

Gary D. Butcher and Richard D. Miles

Factors Causing Poor Pigmentation of Brown-Shelled Eggs

Gary D. Butcher and Richard D. Miles

Minimizing Microbial Contamination in Feed Mills Producing Poultry Feed

Gary D. Butcher and Richard D. Miles

Vaccine Failure in Poultry: Factors to Consider

Gary D. Butcher and Richard D. Miles

Understanding Pet Bird Nutrition

Gary D. Butcher and Richard D. Miles

Feed Passage in Broilers—A Complex Problem

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

Broiler Management—The First 24 Hours

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

Broiler Performance From Cull Eggs

Gary D. Butcher and Amir H. Nilipour

Factors to Consider in Serologic Testing for Mycoplasma gallisepticum (MG) and Mycoplasma synoviae (MS)

Gary D. Butcher

Management of Hatching Eggs and Broiler Performance

G. D. Butcher and Amir H. Nilipour

Chicken Embryo Malpositions and Deformities

Gary D. Butcher yAmir H. Nilipour

Myeloid Leukosis (J-virus)—An International Broiler Industry Concern

Gary D. Butcher, and Richard D. Miles

Newcastle and Infectious Bronchitis Vaccine Reactions in Commercial Broilers

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

Numbers for Successful Poultry Production

Gary D. Butcher and Amir H. Nilipour

Broiler Production Goals—Important Numbers

Gary D. Butcher and Amir H. Nilipour

A Systematic Approach to Solving Hatchability and Chick Quality Problems

Gary D. Butcher and Amir H. Nilipour

Diagnostic and Monitoring Serology in Commercial Poultry Integrations: Practical Applications

Gary D. Butcher

Interrelationship between Nutrition and Immunity

Gary D. Butcher and Richard D. Miles

Data Collection: Poultry Integrations

Gary D. Butcher and Amir H. Nilipour

Investigating Vaccination Failure in Poultry Flocks

Gary D. Butcher and Mojtaba Yegani

The Role of Humans in Poultry Disease Outbreaks

Gary Butcher and Mojtaba Yegani

Biosecurity for the Poultry Industry

Gary Butcher and Mojtaba Yegani

Common Consumer Misconceptions about Eggs

Gary D. Butcher

This publication provides information to consumers of eggs and explains a few of the common consumer misconceptions about eggs. Written by Gary D. Butcher and published by the UF College of Veterinary Medicine, May 2024.

Fowl Adenovirus Hepatitis (IBH and HHS): An Emerging Poultry Disease

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.

How to Evaluate Quality of Newly Hatched Chicks

Gary D. Butcher and Iyva Gage

This publication aims to assist poultry owners in recognizing what is normal and abnormal and in evaluating quality when examining chicks. Written by Gary D. Butcher and Iyva Gage, and published by the Veterinary Medicine—Department of Large Animal Clinical Sciences, UF/IFAS Extension, February 2025.

Recognizing Immunosuppressive Diseases in Commercial Poultry

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.

Hurricane Preparedness for Poultry

Jessica M. Ryals yGary D. Butcher

Before the hurricane and tropical storm season, weatherizing your backyard poultry coops is crucial to ensure the safety and well-being of your birds. This publication outlines how to protect your coop from heavy winds, flooding, and flying debris. A well-built, well-anchored coop in a place that will not flood or blow over in strong winds is the goal. Written by Jessica M. Ryals and Gary D. Butcher, and published by the UF College of Veterinary Medicine, UF/IFAS Extension, August 2025.