. The diseases of poultry. Poultry. 218 DISEASES OF POUI/rRY. diphtheritic sore throat. On the other hand it is asserted that the diphtheria of children is sometimes communicated to birds, and that the contagion may be thus preserved for a considerable time and again transmitted to children. The avian diphtheria affects the common fowl, turkeys, ducks, pea-fowls, pigeons, pheasants and probably many other varieties of birds. In some out- breaks, it is very acute, progresses with great rapidity, and destroys most of the birds attacked. Symptoms.— When first attacked, the affected birds present
. The diseases of poultry. Poultry. 218 DISEASES OF POUI/rRY. diphtheritic sore throat. On the other hand it is asserted that the diphtheria of children is sometimes communicated to birds, and that the contagion may be thus preserved for a considerable time and again transmitted to children. The avian diphtheria affects the common fowl, turkeys, ducks, pea-fowls, pigeons, pheasants and probably many other varieties of birds. In some out- breaks, it is very acute, progresses with great rapidity, and destroys most of the birds attacked. Symptoms.— When first attacked, the affected birds present the symp- toms of common cold or catarrh. There is a watery secretion from the nostrils and often from the eyes, with general weakness and prostration greater than would be expected from simple catarrh. The birds sit with the back arched, the head and neck drawn down towards the body, the plumage roughened; the respiration is more or less obstructed, rapid, audible and strident; the vision swallowing is difficult. There is frequent shaking of the head, sneezing and expectoration of mucous secre- tions. If the mouth is examined at this early period the tongue is found to be pale, while small grayish spots, shaded with black, and slightly projecting above the surface are seen along the border, the upper surface or at the base. The following day the condition is aggravated, the temperature is several degrees above the normal, the appetite has disappeared, and there is diarrhea with. Figr. 66.— Floor of the mouth showiiifj the diphtlieritic exu- date over the toilrrue. is impaired and. 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 Salmon, D. E. Washington, D. C. , G. E. Howard & co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpoultry, bookyear1899
