File:Elementary lectures on veterinary science, for agricultural students, farmers, and stockkeepers (1913) (14597856468).jpg

Identifier: elementarylectur00thomrich (find matches)
Title: Elementary lectures on veterinary science, for agricultural students, farmers, and stockkeepers ..
Year: 1913 (1910s)
Authors: Thompson, Henry
Subjects:
Publisher: London, Baillière, Tindall and Cox
Contributing Library: University of California Libraries
Digitizing Sponsor: MSN

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o my surgery,from December to June, to have their mouths examined, when, ifnecessary, I remove the crowns. This long and varying period isdue to the time when the animals are born, as well as to theirmode of feeding. 353. When from three and a half to four years old (7) the horse casts its lateral incisors and the third temporary premolar,and these are replaced by permanent ones, one on each side, aboveand below. The sixth tooth or third molar now comes into view;thus, at four years old, it casts eight temporary and gets twelvepermanent teeth (Plate XXX.), but it seldom seems to suffer somuch as at three years old, although there is an old saying that afour-year-old horse cannot stand work so well as a three-year-old.This, in my opinion, is due to the punishment it has gone through asa three-year-old, and the effects of which it has not been able tothrow off. If you find an animal not doing well at this period,examine the mouth, and, if necessary, remove the shells from the PLATE XXIX
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bSNTITION AND DENTAL DISEASES 241 third molars. As a rule, the shells of the milk teeth come off fromthe lower jaw sooner than from the upper. In many cases whenthe shells are removed, also in cases of retarded dentition, a foetidsmell, as of diseased bone, is noticed, and from the irritation set upin the lining membrane of the mouth, which extends to the throat, atroublesome cough may be induced. 354. At five years old (8) the corner milk incisors are replacedby permanent teeth, and the canines, or tusks, appear in the horse,but are generally absent in the mare ; occasionally we find smallrudimentary tusks in the latter. The horse is now full-mouthed. 355. With the exception of a young horse casting its teeth, and anold one with unevenly worn surfaces, I am not in favour of givingcrushed or bruised oats to horses, as the crowns of the horses molarteeth resemble the surface of the old-fashioned millstone, beingproperly adapted for grinding the grain. I therefore recommendoats to be gi

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