According to Roche Lubin croup is sometimes observed in spring in lambs
and hogs. The common cause is “the shutting up of the animals for the
whole twenty-four hours in a hot confined place, the floor of which is
covered by a fine dust, and the air loaded with the same, owing to the
jostling of the sheep together, the effects being intensified by the
weight of the fleeces.”
The disease is manifested by constant working of the jaws, extreme
tension of the neck, abundant salivation, respiration hurried and
whistling, extreme pain and threatened suffocation when the slightest
pressure is made on the throat, and refusal of all food liquid or solid.
The weak, hacking, convulsive cough is associated with the discharge of
a whitish glairy mucus by the nose until the third or fourth day when
false membranes may be expected.
_Treatment_ is like that for the ox, medicine being given in about
one-fifth of the doses.