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
The LEMURES, of which we have eighty-six autopsies, do not differ much
in anatomy from the Primates, however greatly they disagree in habits
and outward appearance; their diet is the same. Clinically the slothful
behavior of a normal lemur probably obscures symptoms and signs of
illness, for our antemortem notes with the exception of a few
observations of loose stools, fail to offer a lead as to diagnosis. This
order has a large incidence (twenty-three cases) of gastroenteric
conditions as shown in Table 11, but some explanation of the figures is
deserved. In the first place, only one case of acute gastritis occurred,
and this was apparently a part of a general infection, and if induced at
all by food this was only secondary. Indeed as one reviews the records
it does not seem that the lemurs are easily disturbed in their gastric
digestion. Acute and subacute inflammations from bacterial action seem
definitely more prominent since they take the catarrhal, follicular and
deep submucous form and are frequently associated with generalized
infectious processes. One amœbic case was observed and there was another
in which a heavy cestode and nematode infestation seemed to have paved
the way for bacteria.
CARNIVORA.
The food of this order is received into the fundal part of the stomach,
the distensible but normally capacious left and superior two-thirds of
the organ. The general shape of the viscus, that of a gourd, permits a
fairly sharp separation of the fundal and pyloric sections, so definite
indeed that the pathology of the two parts was studied. The intestines
vary in length, but in the land carnivores are relatively short, narrow
in lumen and rich in wall. A cecum, or at least a blind end of the large
gut made by the insertion of the small intestine above the tip of the
colon, is suggested in all families, although, as in the bears, it may
be quite insignificant or rudimentary. Theoretically no stasis should
occur at this point. The colon is short in all carnivores and, like the
small gut, with a heavy wall. The comparative simplicity of the
carnivorous gut tract, the ability of many of these animals to disgorge,
the suggestion of high resistance of the upper end of the tract to
infection and the ease with which diarrhœa can clear out the tube, would
seem to warrant the expectation that inflammation would not be serious.
Such, however, is not the fact for, on the contrary, they have shown a
higher incidence than any other order for which we have adequate
comparison. Anatomically considered their stomach occupies the second
place in vulnerability, next to the marsupials, and their intestines the
highest place; this indicates of course that combined gastric and
intestinal disease has often occurred. Involvement of the colon occupies
the second place, in ordinate susceptibility, being exceeded only by the
monkeys, due to heavy parasitic infestation, but would occupy the first
place were the eleven amœbic dysenteries in monkeys subtracted from
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account