76 PRINCIPLES OP VETERINARY SCIENCE 



shovel-shaped. The root is rounded, and is embedded in the jaw 

 in such manner as to allow a small amount of movement. These 

 teeth do not undergo continuous eruption, as in the horse, but 

 gradually wear away so that in old age only mere stubs remain 

 visible. The cheek teeth of the ox resemble those of the horse 

 in number and general arrangement. Wolf teeth seldom occur 

 in this animal. 



The deciduous or temporary teeth of the ox are smaller, 

 whiter, and smoother than the permanent set. The dental 

 formula for them is : 



2 (iM 5 Dc§ Dp |) = 20 



Table op Average Periods op Eruption op Teeth in the Ox 

 Teeth Eruption 



A. Deciduous: 



1st incisor (Dil) ] 



2d incisor (LH2) I _. , , . „ , 



3d incisor (Di3) Burth to 3 weeks. 



4th incisor (Dii) J 



1st cheek tooth (Dpi) Birth to 3 weeks. 



2d cheek tooth (Dp2) 

 3d cheek 



tooth (Dp2) \ „. , , , , , 



tooth (d P 3) / Blrth t0 few da y s - 



B. Permanent: 



1st incisor (71) 1^-2 years. 



2d incisor (72) 2-23^ years. 



3d incisor (73) 2J^-3 years. 



4th incisor (74) 3J^-4 years. 



1st cheek tooth (PI) 2-2J^ years. 



2d cheek tooth (P2) lJ^-23^ years. 



3d cheek tooth (P3) ■. 2^-3 years. 



4th cheek tooth (Ml) 6-6 months. 



5th cheek tooth (M2) 1-1K years. 



6th cheek tooth (MZ) 2-2J^ years. 



The eruption of both sets of teeth is very irregular in the ox 

 due to forced feeding and pampering. The figures in the above 

 table represent the average of observations on a large number of 

 cattle of different breeds. 



The salivary glands occur in pairs. They are named the 

 parotid, the submaxillary, and the sublingual. The 'parotid 



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