Disease in captive wild mammals and birds : $b incidence, description, comparisonFox, Herbert
Science
Disease in captive wild mammals and birds : $b incidence, description, comparison
Fox, Herbert
Veterinary medicine
There have been two small outbreaks of an acute nonspecific infection—
that is not suggestive of cholera, psittacosis or infectious enteritis—
among the parrots in which during a short time 4 and 6 parrots died with
nasopharyngosinusitis as the prominent lesion. One outbreak was studied
bacteriologically without definite result. There was no uniform internal
pathology unless, in one outbreak, congestion of the cerebellum may be
mentioned. Fowl diphtheria and its associated condition from which a
satisfactory separation has not been accomplished, epithelioma
contagiosum, has happily given us little concern, so that it is not
possible to record any instructive facts upon its cause or differential
diagnosis. There was recorded in the 1911 Report of the Society the
occurrence of two fatal cases in cassowaries from which it was possible
to isolate the B. columbarum and one bird with the same clinical
appearances whose recovery seemed to be due to the use of human
diphtheria antitoxin. In light of more information and consideration of
the accepted variability of this disease, it is possible that this bird
may have recovered without the injections or with the use of normal
serum. Nowadays it is possible to obtain antiroup serum which is stated
by Blair of New York to be efficacious. The disease has been observed in
a wild turkey and an Abyssinian Ground Hornbill, beside the two
struthious birds mentioned above.
MYCOSIS.
Mycotic disease of the nasopharynx seldom restricts itself to this
cavity, usually extending by continuity to the esophagus, or by
inspiration to the lungs whence it spreads to the air sacs. This
condition of the upper passages has occurred here only in Psittaci and
Accipitres although it is reported by veterinarians as occurring in
Anseres and Struthiones. In the first order four birds were affected,
two showing extension to the esophagus and a like number having
pulmonary and serous membrane involvement. These cases were all due to
aspergillus whereas those next to be mentioned were caused by an oidium
close to the “albicans” variety. In four Mississippi kites the prominent
changes were found in the pharynx and esophagus down as far as the
proventricle with only a few rather trifling lesions in the nasal area.
Infiltrative and necrotizing processes characterized the action of the
oidium while that exerted by the aspergillus was more superficial and
extensive. In one case of a parrot the whole nasal cavity was completely
filled with a yellow gray exudate whereas the esophageal wall of the
kites was thoroughly infiltrated by a gray-brown, friable, necrotic
mass. Attempts at treatment were made in the case of the latter, using
potassium chlorate and saline solution on cotton swabs. The result was
entirely negative and the applications seemed to have no effect upon the
course of the infection.
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