Comparative morphometric characterization of tooth rows in the domestic horse and cattle

The article presents the morphometric characterization of tooth rows in horse and cattle. The studies were conducted at the Department of Anatomy and Histology of Animals named after prof. A. F. Klimov of the Moscow State Academy of Veterinary Medicine and Biotechnology – MVA by K. I. Skryabin and the Zoological Museum of the Moscow State University named after M. V. Lomonosov. The object of the study were mature animals: domestic horse (n=15) and cattle of Holsteinized breed (n=15). The study material was skulls. On the basis of the complex methodical approach including: macromorphometry with determination of linear parameters (length of upper and lower jaw and tooth row) with the subsequent statistical processing of the obtained numerical data according to the generally accepted method, both species and species-wide regularities and features of anatomical organization of jaws in the studied animals were established. The similarity in the studied animals in the absence of asymmetry on both jaw bones and the same percentage ratio of the length of the upper dental arcade to the length of the jaws was revealed, which may be related to the peculiarities of their chewing act and the type of feed received. The obtained results are basic for diagnostics, identification and development of methods of dentopathies correction in veterinary dentistry.