. Common diseases of farm animals. Veterinary medicine. INFECTIOUS DISEASES 303 ease spreads rapidly, tliroiigli the movement of live-stock affected by the disease. Animals recently recovered may infect other animals. Dogs, birds, people, vehicles, milk, roughage, grains and other material from an infected farm may spread the disease. The period of incuhation is sliort. Symptoms of disease may be manifested in from one to six days following exposure. The first symptoms are fever, dulness, trembling and loss of appetite. This is followed by vesicles or blisters forming on the. Fig. 106.—A cow a
. Common diseases of farm animals. Veterinary medicine. INFECTIOUS DISEASES 303 ease spreads rapidly, tliroiigli the movement of live-stock affected by the disease. Animals recently recovered may infect other animals. Dogs, birds, people, vehicles, milk, roughage, grains and other material from an infected farm may spread the disease. The period of incuhation is sliort. Symptoms of disease may be manifested in from one to six days following exposure. The first symptoms are fever, dulness, trembling and loss of appetite. This is followed by vesicles or blisters forming on the. Fig. 106.—A cow affected with foot-and-mouth disease. Note the accumulation of saliva about the lips. (From report of the Bureau of Animal Industry.) mucous membrane of the mouth, lips, between and above the claws and the region of the udder. The inflammation of the mouth and feet may be very painful. Long strings of saliva may dribble from the mouth and collect about the lips (Fig. lOG). A smacking or " clucking " sound is produced when the animal moves its jaws and lips. The severe pain resulting from the inflammation of the mouth and feet, and the difficulty in moving about and eating and drinking, cause the animal to lose flesh and become emaciated. Milk cows may go dry. The death-rate is not heavy. Some writers place it as low. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Craig, Robert Alexander, 1872-. Philadelphia London, J. B. Lippincott company
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Keywords: ., bookpublisherphilad, booksubjectveterinarymedicine, bookyear1919
