Adaptation of the Third Generation Aberdeen Angus Heifers in the North Kazakhstan Region
- 1 Department of Technology and Processing of Livestock Production, Kazakh Agrotechnical University, Kazakhstan
- 2 Department of Microbiology and Biotechnology, Kazakh Agrotechnical University, Kazakhstan
- 3 Department of Nutrition and Animal Products Quality, Estonian University of Life Sciences, Estonia
Abstract
The article presents research materials on the adaptive and productive qualities of the third-generation heifers of Aberdeen Angus cattle in the conditions of the "Zholdasbay-agro" farming enterprise of the North Kazakhstan region. The object of study was the growth and development of third-generation heifers obtained by Canadian and European selection of the Aberdeen-Angus breed. According to the results of the study and the summary of clinical signs, the frequency of antenatal hypotrophy in newborn calves of the Aberdeen-Angus breed of Canadian selection was 12.3%, European 8.7%. The research results showed that the relative growth rate in European calves up to 6 months is higher than in peers of Canadian breeding, but in the period from 6 to 8 months, calves obtained from cows of the second generation of Canadian breeding are superior to calves of European selection. The established tendency of a lower growth rate of heifers obtained from cows of Canadian breeding may be associated with an increase in the tension of regulatory mechanisms that ensure the adaptation of animals to new environmental conditions.
DOI: https://doi.org/10.3844/ojbsci.2023.133.141
Copyright: © 2023 Zhanat Titanov, Nurlybay Kazhgaliyev, Talgat Kulmagambetov, Saltanat Amantay and David Arney. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Keywords
- Physiological Adaptation
- Selection
- Growth and Development
- Aberdeen Angus Cattle