Authors:
D. Yu. Nokhrin,
O. V. Sokolova,
A. I. Belousov,
A. G. Isaeva,
E. V. Mokerova,
Yu. S. Gerasimova
Ural Federal Agrarian Scientific Research Centre of the Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russia
“Kirovskoe” for breeding work JSC, Kirov, Russia
“Smolenskoe” for breeding work JSC, Smolensk, Russia
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract. The purpose of this study was to identify and explain patterns of biochemical parameters in dairy cows, taking into account the characteristics of their breed. Methods. A comparison was made of samples of animals of five breeds (Holstein, Tagil, Suksun, Sychevsk, Istoben) according to 17 biochemical parameters. The total number of animals studied was 407. To analyze the obtained results, statistical analysis methods were used, including the method of nonlinear principal component analysis using the CATPCA (Categorical PCA) algorithm. Scientific novelty. The chosen method made it possible to summarize a large number of biochemical indicators and identify processes in which the studied groups of cows differed to a greater or lesser extent. Results. Five principal components were identified and interpreted, explaining a total of 67.4 % of the total variance. Some observed patterns may indicate the development of pathological conditions in animals. Similar biochemical patterns were observed, on the one hand, in cows of the Tagil, Holstein and Suksun breeds, and on the other, in the Istoben and Sychev breeds. The animals of the Suksun breed were closest to the physiological norm. More pronounced changes associated with a negative energy balance were observed in Holstein cows.
Keywords: metabolomics, cattle, biochemical parameters, principal component analysis, breed differences
Acknowledgements. The work was carried out within the framework of the Russian Science Foundation project No. 22-16-00021 “Study of associations of molecular genetic markers with valuable physiological traits of farm animals for the purpose of targeted selection to increase adaptive potential and longevity.” The authors express their gratitude to the chief specialist of the Department of Agriculture and Entrepreneurship of the Oktyabrsky Urban District of the Perm Territory V. M. Absalikov, General Director of Suksunskoe LLC S. A. Pestrikov, Director of Suksunskoe LLC N. P. Suetina, General Director of Kirovskoe JSC for breeding work N. A. Belyavin for assistance in conducting scientific research.
For citation: Nokhrin D. Yu., Sokolova O. V., Belousov A. I., Isaeva A. G., Mokerova E. V., Gerasimova Yu. S. Nonlinear main components of the biochemical profile of dairy cattle of five breeds. Agrarian Bulletin of the Urals. 2024; 24 (08): 1056‒1070. https://doi.org/10.32417/1997-4868-2024-24-08-1056-1070. (In Russ.)
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