Ebook Horse genetics (2/E): Part 1

Part 1 book "Horse genetics" includes content: Evolution and domesticationof horses; basic horse genetics; horse genomics; black, bay, and chestnut (extension and agouti); color diluting genes; tobiano, white, sabino, and roan (kit); gray; frame overo and splashed white; leopard (appaloosa) spotting.
Nội dung trích xuất từ tài liệu:
Ebook Horse genetics (2/E): Part 1 Horse Genetics, 2nd Edition Horse Genetics, 2nd Edition Ernest Bailey M.H. Gluck Equine Research Center University of Kentucky Lexington, Kentucky, USA and Samantha A. Brooks Department of Animal Science Cornell University Ithaca, New York, USA CABI is a trading name of CAB International CABI CABI Nosworthy Way 38 Chauncey Street Wallingford Suite 1002 Oxfordshire OX10 8DE Boston, MA 02111 UK USA Tel: +44 (0)1491 832111 Tel: +1 800 552 3083 (toll free) Fax: +44 (0)1491 833508 Tel: +1 (0)617 395 4051 E-mail: info@cabi.org E-mail: cabi-nao@cabi.org Website: www.cabi.org © E. Bailey and S.A. Brooks 2013. All rights reserved. No part of this publication may be reproduced in any form or by any means, electronically, mechanically, by photocopying, recording or otherwise, without the prior permission of the copyright owners. A catalogue record for this book is available from the British Library, London, UK. Library of Congress Cataloging-in-Publication Data Bailey, Ernest (Ernest Frank)   Horse genetics / Ernest Bailey, University of Kentucky, M.H. Gluck Equine Research Center, Lexington, KY, USA, and Samantha A. Brooks, Cornell University, Department of Animal S ­ cience, Ithaca, NY, USA. -- 2nd edition.   pages cm   Previous edition by Ann T. Bowling.   Includes bibliographical references and index.   ISBN 978-1-84593-675-4 (pbk. : alk. paper) -- ISBN 978-1-78064-329-8 (hardback : alk. paper)   1. Horses--Breeding. 2. Horses--Genetics. I. Brooks, Samantha A., 1979- II. Bowling, Ann T. Horse genetics. III. Title.   SF291.B63 2013  636.1'0821--dc23 2012049905 ISBN-13: 978 1 84593 675 4 (pbk) 978 1 78064 329 8 (hbk) Commissioning editor: Sarah Hulbert Editorial assistant: Alexandra Lainsbury Production editor: Lauren Povey Typeset by SPi, Pondicherry, India. Printed and bound by Gutenberg Press Ltd, Tarxien, Malta. Contents Preface to 1st Edition vii Ann T. Bowling Preface to 2nd Edition ix Ernest Bailey and Samantha A. Brooks 1. Evolution and Domestication of Horses 1 2. Basic Horse Genetics 6 3. Horse Genomics 27 4. Black, Bay, and Chestnut (Extension and Agouti)36 5. Color Diluting Genes 42 6. Tobiano, White, Sabino, and Roan (KIT)53 7. Gray 65 8. Frame Overo and Splashed White 69 9. Leopard (Appaloosa) Spotting 77 10. Putting It All Together: Color by Design 81 11. Parentage Testing 86 12. Medical Genetics 95 13. The Horse Karyotype and Chromosomal Abnormalities 112 14. Genetics of Performance 123 15. Pedigrees and Breeding Schemes 135 16. Y Chromosomes, Mitochondria, Epigenetics, and Incomplete Penetrance 146 17. Genetic Nature of Breeds 156 18. Equus166 19. Frequently Asked Questions 175 20. Where Do We Go From Here? 186 Index191  v Preface to 1st Edition Basic genetics textbooks seldom mention horses. Horse breeders tell me that they c ­ annot relate fruit flies, corn and mice to practical horse breeding. This book aims to provide a good overview of genetic principles using horses as the primary examples. I have sifted and distilled facts and ideas to provide horse breeders with relevant illustra- tions. While providing a basic primer, I will not oversimplify to the point of inaccuracy. Students and science professionals can confidently use this handbook as a resource. Do not expect to read this book from cover to cover! In my years of teaching, I have found that genetics is a subject that can only be taken in small doses. When you reach your saturation point, stop for the moment to return at another time. Browse the contents, the pictures and tables to become familiar with the material present. You may want to read only selected chapters or sections. The index may point you to several sections discussing a subject of particular interest. If you wish to read the original research papers, the reference section provides the citations to find them in a university library. You will probably want to have a general genetics text- book at hand to refresh your memory or to provide alternative and more detailed examples of basic principles. Knowledge about horse genes lags well behind that for human or mouse, or even for genes of other domestic animals such as [the] cow, pig, sheep, and chicken. Since the horse provides only a very limited set of examples, readers keen to know more about genetics are encouraged to consult current texts in general genetics. I especially recommend the veterinary genetics textbook by Nicholas (1987) [current edition Nicholas, F.W. (2010) Introduction to Veterinary Genetics. Wiley-Blackwell, Ames, Iowa] for its wealth of animal examples. You may find the contents overwhelmingly detailed about Paint horse pat ...