Diseases of cattle, sheep, goats and swineMoussu, G. (Gustave)
Science
Diseases of cattle, sheep, goats and swine
Moussu, G. (Gustave)
Veterinary medicine
Long journeys in crowded railway trucks may also produce the disease,
although the animal has not been forced to walk. Persons engaged in
exhibiting cattle at shows are well aware of this. Prolonged maintenance
of the standing position will produce the trouble, to which the joltings
of the railway journey may also contribute their share. Prolonged
standing on board ship may induce laminitis.
“Show condition” and the consumption of highly nitrogenous, and
particularly of farinaceous, foods favour the occurrence of laminitis.
Breed is also considered to have some influence, and laminitis is said
to occur more frequently in animals raised in flat districts, because in
their case the space between the digits is larger than in mountain-bred
cattle. In this connection the body weight may perhaps play a certain
part.
=The symptoms= vary somewhat, depending on whether laminitis is general
and affects all four feet, or restricted to the two front or the two
hind feet.
The internal claws always seem more severely affected and more sensitive
than the external. In very rare cases the animal remains standing, but
usually it lies down, and will only rise under strong compulsion.
When standing, the symptoms are similar to those noted in the horse; the
animal appears as though absolutely incapable of moving. If all four
feet are affected the animal assumes a position as though just about to
rise; if the front feet alone are affected the animal kneels in front
whilst it stands on its hind legs, a very unusual position for the ox to
assume; finally, if the hind feet alone are affected, the animal seems
to prefer a position with the feet under the body both in front and
behind. (See _Veterinarian_, 1894, case by Bayley, and note by Nunn.)
It is always difficult to make the animal move. Walking seems painful,
and most weight is thrown on the heels. The body swings from side to
side as the limbs are advanced, and each limb is moved with a kind of
general bodily effort.
The claws are hot, sensitive to the slightest touch, and painful on
percussion.
Throughout the development of laminitis the general symptoms are very
marked. The appetite falls off early, fever soon appears, and in grave
cases the temperature rises to 105° or to 106° Fahr. Thirst is marked,
and the animal seems to prefer cold drinks. The muzzle is dry, the face
anxious and expressive of pain. Wasting is rapid.
The ordinary termination is in resolution, which occurs between the
eighth and fifteenth day, provided the patient has been suitably
treated. The disease rarely becomes chronic. On the other hand, the claw
occasionally separates, as a consequence of hæmorrhage or suppuration,
between the horn proper and its secreting membrane. Should this
complication threaten, the pastern becomes greatly swollen, the
extremities become intensely congested, and separation commences at the
coronet. Loss of the claws, however, like suppuration, is rare.
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