. The diseases of poultry. Poultry. DISKASKS OF POULTRY 57 gillus fflancus, aiid Aspergillus candidns. Usually these fungi are found in nature growing upon dead organic matter; but they have great vegetative and resisting power and are able to adapt themselves to various conditions of existence. Many species of birds are affected by them, the dis- ease caused by their develop- ment having been observed in pig- eons, pheasants, fowls, ducks, geese and swans, as well as in vari- ous cage and wild birds. Pam- pered and deli- cate birds are be- lieved to be most frequently at- tacked. The dis- eas
. The diseases of poultry. Poultry. DISKASKS OF POULTRY 57 gillus fflancus, aiid Aspergillus candidns. Usually these fungi are found in nature growing upon dead organic matter; but they have great vegetative and resisting power and are able to adapt themselves to various conditions of existence. Many species of birds are affected by them, the dis- ease caused by their develop- ment having been observed in pig- eons, pheasants, fowls, ducks, geese and swans, as well as in vari- ous cage and wild birds. Pam- pered and deli- cate birds are be- lieved to be most frequently at- tacked. The dis- ease may take on the characters of an epizootic and attack a large. Fig. rpprespiitation of the air" sacs showiiif^ their relation to each other, and to the lunj^s. A, trachea; B, interclavicular sac; C, D, E, F, extensions of the interclavicular sac; <i, anterior thorocic sac; H, humerus; I, poster- ior thoracic sac; J, entrance of bronchial mem- brane; K, abdominal sac. number of indi- viduals. Symptoms.— In the early stages of the disease no symptoms are noticed, and it is only after it has progressed considerably that these be- come apparent. The affected birds do not follow the flock; they are very weak, scarcely able to stand, 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
