Table of Contents

Preface vii

Acknowledgments ix

SECTION I Internal Parasites and Factors Affecting Their Transmission 1

1 Biology and Life Cycles of Equine Parasites 3

2 Pathology of Parasitism and Impact on Performance 24

3 Environmental Factors Affecting Parasite Transmission 45

4 Host Factors Affecting Parasite Transmission 53

5 Parasite Factors Affecting Transmission 58

SECTION II Principles of Equine Parasite Control 67

6 Decreasing Parasite Transmission by Nonchemical Means 69

7 Pharmaceutical Approaches to Parasite Control 80

SECTION III Diagnosis and Assessment of Parasitologic Information 101

8 Diagnostic Techniques for Equine Parasitism 103

9 Detection of Anthelmintic Resistance 128

10 Evaluating Historical Information 138

11 Synopsis of Evidence-Based Parasite Control 145

SECTION IV Case Histories 153

Case 1 Mystery Drug 155

Case 2 Pyrantel Efficacy Evaluation 158

Case 3 Egg Count Results From Illinois Yearlings 160

Case 4 Colic and Parasites 163

Case 5 Confinement after Deworming 166

Case 6 Abdominal Distress in a Foal 168

Case 7 Quarantining Advice 171

Case 8 Diarrhea and Colic 173

Case 9 Foal Diarrhea 176

Case 10 Oral Lesion 179

Case 11 Skin Lesion 181

Case 12 Legal Case 184

Case 13 Repeated Egg Counts 186

Case 14 Repeated Colic 189

Case 15 Ivermectin Efficacy 193

Case 16 Ten Commandments 195

Case 17 Ivermectin Egg Reappearance 198

Case 18 Name that Worm 201

Case 19 Parasite Control for Yearlings 203

Case 20 Reaction to Treatment 205

Index 207

About the Author

Craig R. Reinemeyer graduated from the Ohio StateUniversity College of Veterinary Medicine in 1976, and spent 5years in mixed animal practice before returning to OSU to pursue aPhD in veterinary parasitology. He was a faculty member ofthe University of Tennessee College of Veterinary Medicine from1984 to 1998, and served as the President of the AmericanAssociation of Veterinary Parasitologists from 2003 to 2004. In 1997, Dr. Reinemeyer founded East Tennessee Clinical Research, acontract research organization that conducts pharmaceutical studiesto facilitate the development of new veterinary drugs. ETCR s efforts have contributed to the approval of severalcurrently marketed anthelmintics for horses, cattle, andpets. Martin K. Nielsen is Assistant Professor in theDepartment of Veterinary Science of the Maxwell H. Gluck EquineResearch Center at the University of Kentucky. He has a doctoratefrom the University of Copenhagen, and was a faculty member therefor four years before moving to Kentucky. His research interestsinclude endoparasite infections of horses, clinical and moleculardiagnosis, epidemiology, surveillance, and control.

Reviews

This book combines classical parasitology with horsesense, making it a very useful tool for all who work with horses.The authors submit all the evidence available regarding theinternal parasites of the horse. Practitioners will appreciate theease with which they can access the information. (Doody s, 19 July 2013) This text (handbook) is fantastic. Very thorough, I seewhere they encompassed many decades of information that is sciencebased and also extremely practical. I see a tremendous amount ofDr. R s knowledge and style here, again both scientific andpractical included in this text. Extremely easy to read and veryconcise concerning what information equine vets need and shouldknow about equine parasites and the management and use of currentdewormers combined with management strategies. Ton more in herethan just deworm your horse every 2 months!. (Steven Grubbs of Boehringer Ingelheim)