. Diseases and enemies of poultry . oduced by an entirely different parasite,and on dose exsnMnation it can be seen that the condi-tion of the skin is different from that whicli exists inmange. The parasiteof favns is a vegetable«j:rowth, known as Acho- rion schorleinii, Favus usually com-mences about the comb, head and neck. It causes the feathers to become brittle and break off and fall out, and when these are examined clOsely itis seen that their interioris filled with scales and with branching threads cesembling minute roots. These are the filamentsof the vegetable parasite or fungus. When
. Diseases and enemies of poultry . oduced by an entirely different parasite,and on dose exsnMnation it can be seen that the condi-tion of the skin is different from that whicli exists inmange. The parasiteof favns is a vegetable«j:rowth, known as Acho- rion schorleinii, Favus usually com-mences about the comb, head and neck. It causes the feathers to become brittle and break off and fall out, and when these are examined clOsely itis seen that their interioris filled with scales and with branching threads cesembling minute roots. These are the filamentsof the vegetable parasite or fungus. When thecomb is involved, it becomes swollen, its surface becomes scaly, whitish and powderly. The eyelids arefrequently afleeted, ajid in some rare cases the feath-ered surfaces are involved to such an extent that thebird becomes almost naked. tTpon the skin there de-velops a thick yellowish or grayish crust or scab in theform of rather small, roundish disks, depressed at thecentre. Tlie odor of tli< diseased bird is peculiai- and. Head and Neck of a Fowl, AffectedWITH Generalized Favus. 85 disagreeable and resembles that of a mouldy or mustygrain bin. It becomes tliin, weak, exhausted, and uuless relieved it dies. If a small poi-tion of a crust or the contents of afeather growing on the diseased skin is mioistened witha weak solution of acetic acid and placed under themicroscope it will be seen tliat it is made up of cells
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, booksubjectmam
