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Access to the eBook is limited to the first individual who redeems the PIN, located on the inside cover of this book, at expertconsult.inkling.com and may not be transferred to another party by resale, lending, or other means. 2015v1.0 Sheep, Goat, and Cervid Medicine Sheep, Goat, and Cervid Medicine THIRD EDITION Editors David G. Pugh, BSA, DVM, MS, MAG, DACT, DACVN, DACVM Owner Large Animal Medicine Southern Traxx Veterinary Services Waverly, Alabama, United States A. N. Baird, DVM, MS, DACVS Professor of Surgery, Large Animal Chief-of-Staff Department of Veterinary Clinical Sciences Purdue University West Lafayette, Indiana, United States Misty A. Edmondson, DVM, MS, DACT Associate State Veterinarian Alabama Department of Agriculture and Industries Montgomery, Alabama, United States Thomas Passler, DVM, PhD, DACVIM Associate Professor Department of Clinical Sciences Auburn University, College of Veterinary Medicine Auburn, Alabama, United States With 249 illustrations Edinburgh London New York Oxford Philadelphia St Louis Sydney 2021 © 2021, Elsevier Inc. All rights reserved. First edition 2002 Second edition 2012 SHEEP, GOAT, AND CERVID MEDICINE, THIRD EDITION ISBN: 978-0-323-62463-3 Copyright © 2021 by Elsevier, Inc. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the Publisher. Details on how to seek permission, further information about the Publisher’s permissions policies, and our arrangements with organizations such as the Copyright Clearance Center and the Copyright Licensing Agency can be found at our website: www.elsevier.com/permissions. This book and the individual contributions contained in it are protected under copyright by the Publisher (other than as may be noted herein). Notice Practitioners and researchers must always rely on their own experience and knowledge in evaluating and using any information, methods, compounds, or experiments described herein. Because of rapid advances in the medical sciences, in particular, independent verification of diagnoses and drug dosages should be made. To the fullest extent of the law, no responsibility is assumed by Elsevier, authors, editors, or con- tributors for any injury and/or damage to persons or property as a matter of products liability, negligence or otherwise, or from any use or operation of any methods, products, instructions, or ideas contained in the material herein. Cover photos of goats and sheep courtesy of Kim Benson ISBN: 978-0-323-62463-3 Content Strategist: Jennifer Catando Content Development Specialist: Kim Benson Project Manager: Manchu Mohan Design: Brian Salisbury Marketing Manager: Bergen Farthing Printed in China Last digit is the print number: 9 8 7 6 5 4 3 2 1 For my parents, Terry and the late Jack Pugh, who taught Helen, Joel, and me to love the Lord, work hard, and try our best. For my wife, partner, and best friend, Ms. Jayne Moore Pugh, who taught our three children the same ideas for life. For our three wonderful children, Rebekah, Natalie, and Dylan, their spouses, Brent, Aaron, and Chasity, and our four grandchildren, Ella, Eli, Layne, and Leah, all of whom we are so very proud. For the Lord, who has given me a multitude of blessings. Keep the faith. David G. Pugh To the memory of my parents Aubrey and Arline, who taught me to always give my best and that with opportunity comes responsibility. I hope they would be proud. To Debra, my love and my life, who graciously agreed to sacrifice time while I tackled another book. To our children, Taylor (Purdue DVM 2021), Tanner (Casper College 2017, Fightin’ Texas Aggie 2019), and Kaycee (TBD 2024), who have given us many great memories and the hope of many more to come. Thank you to my great friend of over 30 years, David Pugh, for inviting me to participate in this project and his never-ending work to make this book the best it could be. And thanks to God, through which all this is possible. A. N. Baird To my parents, Barbara Fechner and the late Hans Passler, for their love and emotional, moral, and financial support. They instilled in me the work ethic, perseverance, and desire to succeed in all tasks large or small. To my wife Nicole and son William. It is their love and smiles that I look forward to when I come home every day. I would be lost without you and appreciate your support of the extracurricular activities in my career! And to my host family, Roger, Peggy, Nathan, Nick, and Nora Borgmeyer and their respective spouses and children, who have always treated me like their own and have fostered my desire to become a veterinarian. They successfully turned a city slicker into a country boy! Thomas Passler To my parents, John and Priscilla Abrams, who taught me, John, and Kristy the importance of family, the value of hard work, and to always do our best in everything. To my husband, Jason, for always pushing me to follow my dreams and for giving me mine. To our two amazing children, Wyatt and Laken, who make everything worthwhile. We are so proud of you both and thank God for you every day. To my teacher, mentor and friend, David Pugh, for all of the wonderful veterinary and life lessons and for all of the fun along the way. Thank you for all that you have done to help me. I will be forever grateful and will always Keep the Faith. Misty A. Edmondson List of Contributors The editors would like to acknowledge and offer grateful thanks for the input of all previous edition contributors, without whom this new edition would not have been possible. A. N. Baird, DVM, MS, DACVS Professor Professor of Surgery, Large Animal Chief-of-Staff American Institute for Goat Research Department of Veterinary Clinical Sciences Langston University, Langston Purdue University, West Lafayette Oklahoma Indiana United States United States Misty A. Edmondson, DVM, MS, DACT Jenna E. Bayne, DVM, PhD, DACVIM (LA) Associate State Veterinarian Clinical Assistant Professor Alabama Department of Agriculture and Industries, Veterinary Diagnostic and Production Animal Medicine Montgomery Iowa State University College of Veterinary Medicine, Ames Alabama Iowa United States United States Virginia R. Fajt, DVM, PhD Kenneth R. Brown, JD, DVM Clinical Professor Program Director Veterinary Physiology and Pharmacology Veterinary Services Texas A&M University College of Veterinary Medicine Rural Veterinary Outreach, Bell and Biomedical Sciences, College Station Florida Texas United States United States Chris Cebra, VMD, MA, MS, DACVIM Eric J. Fish, DVM, PhD, DACVP Department Chair, Clinical Sciences Clinical Pathologist Carlson College of Veterinary Medicine, Oregon State IDEXX Laboratories University, Corvallis Westbrook Oregon Maine United States United States Margaret Cebra, VMD, DACVIM Nar Kaji Gurung, PhD, PAS, DACAN Corvallis Associate Professor Oregon Agricultural and Environmental Sciences United States Tuskegee University, Tuskegee Alabama Manuel F. Chamorro, DVM, MS, PhD, DACVIM United States Assistant Professor Affiliate Professor Department of Clinical Sciences Department of Animal Sciences Auburn University, College of Veterinary Medicine, Auburn Auburn University, Auburn Alabama Alabama United States United States Lionel J. Dawson, BVSc, MS, DACT Meredyth Jones, DVM, MS, DACVIM Professor Associate Professor, Food Animal Medicine and Surgery Department of Veterinary Clinical Sciences Large Animal Clinical Sciences Oklahoma State University, Stillwater Oklahoma State University, Stillwater Oklahoma Oklahoma United States United States vii viii Contributors President David G. Pugh, BSA, DVM, MS, MAG, DACT, DACVN, Large Animal Consulting & Education, Perkins DACVM Oklahoma Owner United States Large Animal Medicine Southern Traxx Veterinary Services, Waverly Richard J. McMullen Jr., DVM, DACVO, DECVO Alabama Associate Professor United States Department of Clinical Sciences Auburn University, College of Veterinary Medicine, Auburn Emily Reppert, DVM, MS, DACVIM Alabama Assistant Professor United States Veterinary Clinical Sciences Kansas State University College of Veterinary Matt Miesner, DVM, MS, DACVIM (LAIM) Medicine, Manhattan Associate Clinical Professor Kansas Veterinary Clinical Sciences United States Kansas State University College of Veterinary Medicine, Manhattan Kansas Jessica Rush, DVM, MS, DACT United States Assistant Professor Department of Clinical Sciences Roger Merkel, BS, MS, PhD Food & Fiber Animal Services, J.T. Vaughan Large Animal American Institute for Goat Research Teaching Hospital, College of Veterinary Medicine Langston University, Langston Auburn University, Auburn Oklahoma Alabama United States United States Benjamin W. Newcomer, DVM, PhD, DACVPM Clifford F. Shipley, DVM, DACT (Epidemiology), DACVIM, DABT Associate Clinical Professor Emeritus Associate Professor Veterinary Clinical Medicine Department of Clinical Sciences University of Illinois, Urbana Auburn University, College of Veterinary Medicine, Auburn Illinois Alabama United States United States Lindsay A. Starkey, DVM, PhD, DACVM (Parasit) Daniel K. Newhard†, DVM Assistant Professor Cardiology Resident Pathobiology Department of Clinical Sciences Auburn University, Auburn Auburn University, College of Veterinary Medicine, Auburn Alabama Alabama United States United States Kelly M. Still Brooks, DVM, MPH, DACVPM, Thomas Passler, DVM, PhD, DACVIM DABVP-Food Animal Associate Professor Assistant Professor Department of Clinical Sciences Dairy and Livestock Production Medicine Auburn University, College of Veterinary Medicine, Auburn Colorado State University, Fort Collins Alabama Colorado United States United States Paul J. Plummer, DVM, PhD, DACVIM, DECSRHM Jenna Workman Stockler, BS, DVM Executive Director Graduate Teaching Assistant National Institute for Antimicrobial Resistance Research and Clinical Sciences Education, Ames Auburn University, Auburn Iowa Alabama United States United States Jenny Pope, DVM, DACVP Ricardo M. Stockler, DVM, MS, DABVP Dairy Practice Veterinary Pathologist Assistant Clinical Professor of Farm Animal Ambulatory Thompson-Bishop-Sparks State Diagnostic Laboratory Clinical Sciences Alabama Department of Agriculture and Industries, Auburn Auburn University College of Veterinary Medicine, Auburn Alabama Alabama United States United States †Deceased