Diseases of cattle, sheep, goats Diseases of cattle, sheep, goats and swine diseasesofcattl00mous Year: 1905 164 COLIC. Causation. This variety of colic is due to a number of somewhat obscure causes. In a general sense we may say that anything which increases intestinal peristalsis increases the risk of invagination. The accident may follow intestinal congestion, but is most frequent in animals suffering from intestinal worms, or in animals used for heavy work. Under the influence of violent, tractive efforts the peristaltic movements are stimulated, and the intestine being in an oblique
Diseases of cattle, sheep, goats Diseases of cattle, sheep, goats and swine diseasesofcattl00mous Year: 1905 164 COLIC. Causation. This variety of colic is due to a number of somewhat obscure causes. In a general sense we may say that anything which increases intestinal peristalsis increases the risk of invagination. The accident may follow intestinal congestion, but is most frequent in animals suffering from intestinal worms, or in animals used for heavy work. Under the influence of violent, tractive efforts the peristaltic movements are stimulated, and the intestine being in an oblique Fig. 68.—Invagination of the intestine in an ox (the constricting portion has been incised longitudinall}). position on a plane inclined backwards, the contracted portion may slip into the dilated section behind it. Invagination may also occur without any apparent cause, even in animals standing in the stable. Symptoms. The attack always occurs suddenly, develops rapidly, and is of an extremely grave character. Colic comes on while the animal is working, moving about, or resting, according to circumstances, and at first resembles that due to congestion. It afterwards becomes very violent; the animals paw, stamp, show great uneasiness, throw themselves violently down, and rise suddenly, only to again lie down as before. The face expresses anxiety, suffering and depression ; the tail is often kept lifted, and efforts are continually made to defaecate, mucus being passed. By passing the hand into the rectum the invagination may occasionally be discovered.
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