Common Diseases of Farm Animals

Produced by Charles Aldarondo, Tiffany Vergon, Beth Trapaga,
Charles Franks and the Online Distributed Proofreading Team.
By R. A. Craig, D.V.M.
In preparing the material for this book, the author has endeavored to arrange and discuss the subject matter in a way to be of the greatest service and help to the agricultural student and stockman, and place at their disposal a text and reference book.
The general discussions at the beginning of the different sections and chapters, and the discussions of the different diseases are naturally brief. An effort has been made to conveniently arrange the topics for both practical and class-room work. The chapters have been grouped under the necessary heads, with review questions at the end of each chapter, and the book divided into seven parts.
The chapters on diseases of the locomotory organs, the teeth, surgical diseases and castration, although not commonly discussed in books of this class, the writer believes will be of value for reference and instructional work.
When used as a text-book, it will be well for the instructor to supplement the text with class-room discussions.
The writer has given special emphasis to the cause and prevention of disease, and not so much to the medicinal treatment. Stockmen are not expected to practise the medicinal treatment, but rather the preventive treatment of disease. For this reason it is not deemed advisable to give a large number of formulas for the preparation of medicinal mixtures to be used for the treatment of disease, but such treatment is suggested in the most necessary cases.
PURDUE UNIVERSITY, LaFayette, Ind. August, 1915.
FIG. (Frontispiece) Insanitary dairy stable and yards. 1. Side and posterior view of bull showing conformation favorable to the development of disease. 2. Insanitary yards. 3. Showing where pulse of horse is taken. 4. Auscultation of the lungs. 5. Fever thermometer. 6. Dose syringe. 7. Hypodermic syringes. 8. Photograph of model of horse's stomach. 9. Photograph of model of stomach of ruminant. 10. Oesophageal groove. 11. Dilated stomach of horse. 12. Rupture of stomach of horse. 13. Showing the point where the wall of flank and rumen are punctured with trocar and cannula in bloat . 14. Photograph of model of digestive tract of horse. 15. Photograph of model of digestive tract of ruminant. 16. A yearling colt that died of aneurism colic. 17. Photograph of model of udder of cow. 18. Photograph of model of uterus of cow containing foetus. 19. Placenta of cow. 20. A case of milk-fever. 21. Milk-fever apparatus. 22. A case of catarrhal cold. 23. Photograph of model of horse's heart. 24. Elephantiasis in horse. 25. Photograph of model of horse's brain. 26. Unilateral facial paralysis. 27. Bilateral facial paralysis. 28. Skeleton of horse. 29. Photograph of model of stifle joint. 30. Atrophy of the muscles of the thigh. 31. Shoulder lameness. 32. Shoe-boil. 33. Sprung knees. 34. Splints. 35. Bones of digit. 36. Photograph of a model of the foot. 37. Foot showing neglect in trimming wall. 38. A very large side bone. 39. A case of navicular disease. 40. An improperly shod foot. 41. Toe-cracks. 42. Quarter-crack caused by barb-wire cut. 43. Changes occurring in chronic laminitis. 44. Atrophy of the muscles of the quarter. 45. String-halt. 46. A large bone spavin. 47. Normal cannon bone and cannon bone showing bony enlargement. 48. Bog spavins. 49. Thorough pin. 50. Curbs. 51. Head of young horse showing position and size of teeth. 52. Longitudinal section of incisor tooth. 53. Cross-section of head of young horse, showing replacement of molar tooth. 54. Transverse section of incisor tooth 55. Transverse sections of incisor tooth showing changes at different ages. 56. Teeth showing uneven wear occurring in old horses. 57. Fistula of jaw. 58. A large hock caused by a punctured wound of the joint. 59. A large inflammatory growth following injury. 60. Fistula of the withers. 61. Shoulder abscess caused by loose-fitting harness. 62. A piece of the wall of the horse's stomach showing bot-fly larvae attached. 63. Biting louse. 64. Sucking louse. 65. Nits attached to hair. 66. Sheep-tick. 67. Sheep scab mite. 68. Sheep scab. 69. A severe case of mange. 70. Liver flukes. 71. Tapeworm larvae in liver. 72. Tapeworms. 73. Tapeworm larvae in the peritoneum. 74. Thorn-headed worms. 75. Large round-worm in intestine of hog. 76. Lamb affected with stomach worm disease. 77. Whip-worms attached to wall of intestine. 78. Pin-worms in intestine. 79. A hog yard where disease-producing germs may be carried over from year to year. 80. Carcass of a cholera hog. 81. Kidneys from hog that died of acute hog-cholera. 82. Lungs from hog that died of acute hog-cholera. 83. A piece of intestine showing intestinal ulcers. 84. Cleaning up a hog lot. 85. Hyperimmune hogs used for the production of anti-hog-cholera serum. 86. Preparing the hog for vaccination. 87. Vaccinating a hog. 88. Koch's Bacillus tuberculosis . 89. A tubercular cow. 90. Tubercular spleens. 91. The carcass of a tubercular cow. 92. A section of the chest wall of a tubercular cow. 93. A very large tubercular gland. 94. A tubercular gland that is split open. 95. Caul showing tuberculosis. 96. Foot of hog showing tuberculosis of joint. 97. Staphylococcus pyogenes . 98. Streptococcus pyogenes . 99. Bacillus of malignant oedema, showing spores. 100. Bacillus of malignant oedema. 101. Bacillus bovisepticus . 102. A yearling steer affected with septicaemia haemorrhagica. 103. Bacillus anthracis . 104. Bacillus necrophorus . 105. Negri bodies in nerve-tissue. 106. A cow affected with foot-and-mouth disease. 107. Slaughtering a herd of cattle affected with foot-and-mouth disease. 108. Disinfecting boots and coats before leaving a farm where cattle have been inspected for foot-and-mouth disease. 109. Cleaning up and disinfecting premises. 110. Bacillus tetani . 111. Head of horse affected with tetanus. 112. A subacute case of tetanus. 113. Streptococcus of strangles. 114. Bacillus mallei . 115. Nasal septum showing nodules and ulcers. 116. Streptococcus pyogenes equi . 117. A case of lumpy jaw . 118. The ray fungus. 119. Bacillus of emphysematous anthrax. 120. Cattle tick (male). 121. Cattle tick (female). 122. Blood-cells with Piroplasma bigeminum in them. 123. Bacillus avisepticus .