Neonatal Loss in Animals

Transcription

1 The book begins with a general chapter on the approach to an abortion, followed by species-specific chapters. Each chapter begins by outlining the pathogenesis of abortion and neonatal loss, then moves on to special diagnostic techniques, fetal and placental anatomy and physiology, and detailed descriptions of the various causes of abortion or neonatal loss. Kirkbride s Diagnosis of Abortion and Neonatal Loss in Animals, Fourth Edition is a useful guide for veterinary practitioners, diagnosticians, pathologists, theriogenologists, students, and technicians. K e y f e at u r e s Provides complete information for diagnosing abortion and neonatal loss in animals Covers cattle, sheep, goats, pigs, horses, dogs, cats, and non-domestic mammals Details the characteristics of many abortifacient causes and associated lesions Published in association with the American Association of Veterinary Laboratory Diagnosticians Now in full color throughout Includes a companion website with digital images for download at The editor Kirkbride s Diagnosis of Abortion and Neonatal Loss in Animals Kirkbride s Diagnosis of Abortion and Neonatal Loss in Animals, Fourth Edition is a concise resource for determining the causes of abortion and neonatal loss in cattle, small ruminants, pigs, horses, dogs, cats, and exotic mammals. Presenting current procedures for diagnosing abortion, this classic reference has been fully updated and expanded, offering new coverage of dogs, cats, and nondomestic mammals. Published in association with the American Association of Veterinary Laboratory Diagnosticians, Kirkbride s Diagnosis of Abortion and Neonatal Loss in Animals provides a valuable aid for understanding abortion and neonatal loss, with thorough coverage of possible causes. Bradley L. Njaa, BSc, DVM, MVSc, DACVP is Associate Professor of Pathology, Department of Veterinary Pathobiology, Center for Veterinary Health Sciences, Oklahoma State University in Stillwater, Oklahoma. Atlas of Comparative Diagnostic and Experimental Hematology, Second Edition By Clifford Smith and Alfred Jarecki Duncan and Prasse s Veterinary Laboratory Medicine: Clinical Pathology Edited by Kenneth S. Latimer Clinical Canine and Feline Reproduction: Evidence-Based Answers By Margaret V. Root Kustritz Equine Reproduction Edited by Angus O. McKinnon, Edward L. Squires, Wendy E. Vaala and Dickson D. Varner Fourth Edition R e l at e d t i t l e s Kirkbride s Diagnosis of Abortion and Neonatal Loss in Animals Fourth Edition Edited by Bradley L. Njaa Njaa isbn njaa_ _cover.indd /14/11 8:15 PM

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3 Kirkbride s Diagnosis of Abortion and Neonatal Loss in Animals Fourth Edition

4 Companion website This book is accompanied by a companion website: The website includes powerpoints of all figures from the book for downloading.

5 Kirkbride s Diagnosis of Abortion and Neonatal Loss in Animals Fourth Edition Edited by Bradley L. Njaa A John Wiley & Sons, Ltd., Publication

6 This edition first published by John Wiley & Sons, Ltd. First, Second editions 1974, 1984, American Association of Veterinary Laboratory Diagnosticians, Inc. Third edition 1990 Iowa State University Press Wiley-Blackwell is an imprint of John Wiley & Sons, formed by the merger of Wiley s global Scientific, Technical and Medical business with Blackwell Publishing. Registered Office John Wiley & Sons Ltd, The Atrium, Southern Gate, Chichester, West Sussex, PO19 8SQ, UK Editorial Offices 2121 State Avenue, Ames, Iowa , USA The Atrium, Southern Gate, Chichester, West Sussex, PO19 8SQ, UK 9600 Garsington Road, Oxford, OX4 2DQ, UK For details of our global editorial offices, for customer services, and for information about how to apply for permission to reuse the copyright material in this book, please see our Web site at Authorization to photocopy items for internal or personal use, or the internal or personal use of specific clients, is granted by Blackwell Publishing, provided that the base fee is paid directly to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA For those organizations that have been granted a photocopy license by CCC, a separate system of payments has been arranged. The fee codes for users of the Transactional Reporting Service are ISBN-13: /2012. Designations used by companies to distinguish their products are often claimed as trademarks. All brand names and product names used in this book are trade names, service marks, trademarks, or registered trademarks of their respective owners. The publisher is not associated with any product or vendor mentioned in this book. This publication is designed to provide accurate and authoritative information in regard to the subject matter covered. It is sold on the understanding that the publisher is not engaged in rendering professional services. If professional advice or other expert assistance is required, the services of a competent professional should be sought. Library of Congress Cataloging-in-Publication Data Kirkbride s diagnosis of abortion and neonatal loss in animals / edited by Bradley Njaa. 4th ed. p. cm. Diagnosis of abortion and neonatal loss in animals Rev. ed. of: Laboratory diagnosis of livestock abortion / edited by Clyde A. Kirkbride. 3rd ed Includes bibliographical references and index. ISBN-13: (pbk. : alk. paper) ISBN-10: I. Njaa, Bradley. II. Kirkbride, Clyde A. Laboratory diagnosis of livestock abortion. III. American Association of Veterinary Laboratory Diagnosticians. IV. Laboratory diagnosis of livestock abortion. V. Title: Diagnosis of abortion and neonatal loss in animals. [DNLM: 1. Abortion, Veterinary diagnosis. 2. Animal Diseases diagnosis. 3. Laboratory Techniques and Procedures. 4. Stillbirth veterinary. SF 887] LC classification not assigned dc A catalogue record for this book is available from the British Library. Wiley also publishes its books in a variety of electronic formats. Some content that appears in print may not be available in electronic books. Set in 9/12.5pt Interstate by SPi Publisher Services, Pondicherry, India Disclaimer The publisher and the author make no representations or warranties with respect to the accuracy or completeness of the contents of this work and specifically disclaim all warranties, including without limitation warranties of fitness for a particular purpose. No warranty may be created or extended by sales or promotional materials. The advice and strategies contained herein may not be suitable for every situation. This work is sold with the understanding that the publisher is not engaged in rendering legal, accounting, or other professional services. If professional assistance is required, the services of a competent professional person should be sought. Neither the publisher nor the author shall be liable for damages arising herefrom. The fact that an organization or Website is referred to in this work as a citation and/or a potential source of further information does not mean that the author or the publisher endorses the information the organization or Website may provide or recommendations it may make. Further, readers should be aware that Internet Websites listed in this work may have changed or disappeared between when this work was written and when it is read

7 Clyde A. Kirkbride, Dr. Clyde A. Kirkbride served the AAVLD and the discipline of veterinary diagnostic medicine for approximately three decades. He did so with distinction, humility and excellence. His public service record goes back to WW II where he served as B-26 bomber pilot, flying 21 missions over Europe. He received his DVM from Oklahoma State University in 1953, was engaged in private practice for 10 years, held a faculty appointment at KSU, and finally served 22 years as a faculty member and diagnostician at South Dakota State University. He rapidly became the national authority on the diagnostic investigation of the causes of food animal abortion. He taught undergraduate students an animal disease course at SDSU for 20 years, and for which he was awarded teacher of the year in the course Animal Diseases and their Control. In cooperation with AAVLD he published Laboratory Diagnosis of Bovine Abortion in 1974; that book morphed into a second AAVLD publication Laboratory Diagnosis of Abortion in Food Animals in 1984; and finally the third edition published in 1989 became Laboratory Diagnosis of Livestock Abortions. All of these books were a huge success, drawing upon AAVLD diagnostic experts/ collaborators from across the country. The books are still found at the diagnostic benches of veterinary diagnostic labs around the world. Dr. Kirkbride was delighted and honored when he learned that a 4th edition would be published and would acknowledge him in the title. Dr. Kirkbride wrote numerous publications and reviews on the subject of reproductive failure in livestock, and conducted research projects that clarified many disease syndromes. In 1985 he described a new infectious agent causing abortion in sheep, the spirillum Flexispira. In 1989 he received the SDSU Gamma Sigma Delta Award for excellence in research. He retired to emeritus status in In retirement he continued to write, and published a series of JVDI manuscripts that summarized his diagnostic findings while a veterinary diagnostician at the SDSU Animal Disease Research and Diagnostic Laboratory that series is still frequently referenced by researchers working in the field of livestock reproductive wastage. David Zeman

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9 Contents Contributors Preface Editor s Acknowledgements ix xi xiii 1 General Approach to Fetal and Neonatal Loss 1 R. Flint Taylor and Bradley L. Njaa 2 Disorders of Cattle 13 Mark L. Anderson 3 Disorders of Sheep and Goats 49 Robert B. Moeller Jr. 4 Disorders of Pigs 89 Michael J. Yaeger 5 Disorders of Horses 147 Neil M. Williams 6 Disorders of Dogs and Cats 173 Claus D. Buergelt 7 Disorders of Nondomestic Mammals 201 Bruce A. Rideout Appendix A Gestational Age Estimation Based on Fetal Measures and Phenotypic Characteristics 221 Appendix B Summary Tables of Diagnostic Tests for Infectious Causes of Abortion and Neonatal Loss 225 Index 233 Companion website This book is accompanied by a companion website: The website includes powerpoints of all figures from the book for downloading. vii

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11 Contributors Mark L. Anderson, DVM, PhD, DACVP Professor of Clinical Diagnostic Pathology, California Animal Health & Food Safety Laboratory, DAHFS Davis Lab, School of Veterinary Medicine, University of California, Davis, CA Claus D. Buergelt, DVM, PhD, DACVP Professor, Emeritus, Department of Infectious Diseases and Pathology, University of Florida, Gainesville, FL Darin M. Madson, DVM, PhD, DACVP (Porcine Circovirus, only) Assistant Professor, Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA Robert B. Moeller Jr., DVM, PhD, DACVP Professor of Clinical Diagnostic Pathology, California Animal Health & Food Safety Laboratory, CAHFS Tulare Lab, School of Veterinary Medicine, University of California, Turlock, CA Bradley L. Njaa, DVM, MVSc, DACVP Associate Professor of Pathology, Department of Veterinary Pathobiology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK Tanja Opriessnig, Dr Med Vet, PhD (Porcine Circovirus, only) Associate Professor, Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA Bruce A. Rideout, DVM, PhD, DACVP Director, Wildlife Disease Laboratories, Institute for Conservation Research, San Diego Zoo Global, San Diego, CA R. Flint Taylor, DVM, MS Director, New Mexico Veterinary Diagnostic Services, New Mexico Department of Agriculture, Albuquerque, NM ix

12 x Contributors Neil M. Williams, DVM, PhD, DACVP Professor, Associate Director, Veterinary Diagnostic Laboratory, College of Agriculture, University of Kentucky, Lexington, KY Michael J. Yaeger, DVM, PhD, DACVP Associate Professor, Department of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, IA

13 Preface The first edition of this text was the result of an American Association of Veterinary Laboratory Diagnosticians (AAVLD) committee that formed nearly 40 years ago. Dr. Clyde Kirkbride was the committee chairperson for more than 17 years guiding the first and two subsequent editions of this work. What initially began as a 1974 book covering bovine abortions morphed into a food animal text in 1983 with the addition of sheep and swine. The third edition was the most complete, published in 1990, including cattle, small ruminants, pigs, and horses. Similarly, this new edition came out of discussions in the AAVLD Pathology Committee. Initially, authors were selected to write about abortion diagnostics based on interest or expertise of a particular species, and their manuscripts were to be placed on a Web site linked to AAVLD. It was later decided that a published manuscript would be a better option. The previous edition had 43 chapters, each devoted to a particular aspect of abortion diagnostics or a particular pathogen. It was roughly organized into species sections. This new edition has fewer chapters with each one devoted to one or two species. It covers conditions affecting cattle, sheep, goats, pigs, and horses, plus newly added chapters covering general approaches to abortion diagnostics and conditions affecting dogs and cats, and, finally, a chapter devoted to the broad topic of abortion and neonatal loss in nondomestic mammalian species. The intended audience of this new edition includes veterinary diagnosticians around the world, veterinary pathologists, veterinary practitioners, veterinary educators, animal and public health workers, veterinary students, and veterinary technicians. The format for each chapter begins with an introductory section outlining the pathogenesis of abortions and neonatal loss, a section of special diagnostic techniques, a section of fetal and placental anatomy and physiology, and then detailed descriptions of the various causes of abortion or neonatal loss. In the diseases section, the format is as follows: viruses, bacteria and fungal, nutritional and toxic etiologies, and, finally, miscellaneous causes. The focus for each chapter is disease recognition as well as proper sampling necessary to make a definitive diagnosis. It is my sincere hope that this publication will enhance our understanding of reproductive disease in animals, will build upon the reputation of previous editions, and will become an invaluable reference that helps decipher abortion and neonatal loss around the world. xi

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15 Editor s Acknowledgements Firstly, I would like to thank members of the AAVLD Pathology Committee for entrusting this project to me. In particular, thank you to Matti Kiupel and Donal O Toole for continually believing in me throughout the process. Secondly, I would like to express my deepest gratitude to each of the authors and contributors. Each of you contributed greatly to this effort and have built upon the foundation laid by Dr. Kirkbride and the previous authors. Thirdly, I wish to thank Erica Judisch, Susan Engelken, and all the staff at Wiley-Blackwell as well as Peggy Hazelwood for their professionalism, hard work, and belief in this project. Fourthly, I wish to thank all of you who have been a professional mentor to me. In particular, I wish to thank Edward G. ( Ted ) Clark, Craig Riddell, Greg Stevenson, Evan Janovitz, Sandy de Lahunta ( Dr. D ), Edward Dubovi, Tony Confer, and Roger Panciera for your encouragement, advice, and constructive criticism through the years. Finally, thank you Leanne, Brynne, Layne, and Brooke Anna, for all of your patience and continued support. I love you all! Sincerely, Bradley L. Njaa xiii