Association of genotypes of cows of the Kholmogory breed by beta-casein with milk productivity
The aim of the study is to identify the frequency of occurrence of various allelic variants and genotypes of beta-casein in cows of the Kholmogory breed and their relationship with dairy productivity. The tasks of the research are genotyping of cattle of the Kholmogory breed by the beta-casein locus...
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| Format: | Article |
| Language: | Russian |
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Federal Agricultural Research Center of the North-East named N.V. Rudnitsky
2022-12-01
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| Series: | Аграрная наука Евро-Северо-Востока |
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| Online Access: | https://www.agronauka-sv.ru/jour/article/view/1184 |
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| author | E. V. Parygina N. A. Khudyakova O. V. Tulinova A. A. Pervukhina I. V. Selkova I. S. Kozhevnikova M. A. Kudrina |
| author_facet | E. V. Parygina N. A. Khudyakova O. V. Tulinova A. A. Pervukhina I. V. Selkova I. S. Kozhevnikova M. A. Kudrina |
| author_sort | E. V. Parygina |
| collection | DOAJ |
| description | The aim of the study is to identify the frequency of occurrence of various allelic variants and genotypes of beta-casein in cows of the Kholmogory breed and their relationship with dairy productivity. The tasks of the research are genotyping of cattle of the Kholmogory breed by the beta-casein locus and establishing its connection with qualitative and quantitative indicators of dairy productivity. As the objects for the research there were taken 150 cows of the 1st, 2nd and 3rd lactation. An allele-specific variant of the PCR method (AS-PCR) was used to identify A1 and A2 beta-casein. As the result it had been established that in the studied part of the herd, 23 % of animals had the A2A2 genotype, 43 % of animals had the A1A1 genotype and 34 % of animals had the A1A2 genotype. For 100 days of the first lactation, animals with A1A2 genotype showed the highest value in milk yield. Animals with A2A2 genotype for 305 days of lactation had the highest milk yield and the amount of milk protein, however, the difference was not statistically significant compared to the animals with A1A2 genotype. Genotype A1A1 has lower indicators by all the parameters studied, with a significant difference relative to genotypes A1A2 and A2A2. Thus, the study of CSN2 is a promising area of scientific research, and the results of the study of beta-casein genotypes can be used as a marker selection in improving the herds of the Kholmogory breed. |
| format | Article |
| id | doaj-art-e994f4e2a14f41b49781adcb4f9ce5b9 |
| institution | Kabale University |
| issn | 2072-9081 2500-1396 |
| language | Russian |
| publishDate | 2022-12-01 |
| publisher | Federal Agricultural Research Center of the North-East named N.V. Rudnitsky |
| record_format | Article |
| series | Аграрная наука Евро-Северо-Востока |
| spelling | doaj-art-e994f4e2a14f41b49781adcb4f9ce5b92025-08-20T03:57:31ZrusFederal Agricultural Research Center of the North-East named N.V. RudnitskyАграрная наука Евро-Северо-Востока2072-90812500-13962022-12-0123687788310.30766/2072-9081.2022.23.6.877-883623Association of genotypes of cows of the Kholmogory breed by beta-casein with milk productivityE. V. Parygina0N. A. Khudyakova1O. V. Tulinova2A. A. Pervukhina3I. V. Selkova4I. S. Kozhevnikova5M. A. Kudrina6Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of SciencesLaverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of SciencesRussian Research Institute of Farm Animal Genetics and Breeding — Branch of the L.K. Ernst Federal Research Center for Animal HusbandryLaverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of SciencesLaverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of SciencesLaverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of SciencesLaverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of SciencesThe aim of the study is to identify the frequency of occurrence of various allelic variants and genotypes of beta-casein in cows of the Kholmogory breed and their relationship with dairy productivity. The tasks of the research are genotyping of cattle of the Kholmogory breed by the beta-casein locus and establishing its connection with qualitative and quantitative indicators of dairy productivity. As the objects for the research there were taken 150 cows of the 1st, 2nd and 3rd lactation. An allele-specific variant of the PCR method (AS-PCR) was used to identify A1 and A2 beta-casein. As the result it had been established that in the studied part of the herd, 23 % of animals had the A2A2 genotype, 43 % of animals had the A1A1 genotype and 34 % of animals had the A1A2 genotype. For 100 days of the first lactation, animals with A1A2 genotype showed the highest value in milk yield. Animals with A2A2 genotype for 305 days of lactation had the highest milk yield and the amount of milk protein, however, the difference was not statistically significant compared to the animals with A1A2 genotype. Genotype A1A1 has lower indicators by all the parameters studied, with a significant difference relative to genotypes A1A2 and A2A2. Thus, the study of CSN2 is a promising area of scientific research, and the results of the study of beta-casein genotypes can be used as a marker selection in improving the herds of the Kholmogory breed.https://www.agronauka-sv.ru/jour/article/view/1184milk proteingenotypefrequency of occurrencecowarkhangelsk region |
| spellingShingle | E. V. Parygina N. A. Khudyakova O. V. Tulinova A. A. Pervukhina I. V. Selkova I. S. Kozhevnikova M. A. Kudrina Association of genotypes of cows of the Kholmogory breed by beta-casein with milk productivity Аграрная наука Евро-Северо-Востока milk protein genotype frequency of occurrence cow arkhangelsk region |
| title | Association of genotypes of cows of the Kholmogory breed by beta-casein with milk productivity |
| title_full | Association of genotypes of cows of the Kholmogory breed by beta-casein with milk productivity |
| title_fullStr | Association of genotypes of cows of the Kholmogory breed by beta-casein with milk productivity |
| title_full_unstemmed | Association of genotypes of cows of the Kholmogory breed by beta-casein with milk productivity |
| title_short | Association of genotypes of cows of the Kholmogory breed by beta-casein with milk productivity |
| title_sort | association of genotypes of cows of the kholmogory breed by beta casein with milk productivity |
| topic | milk protein genotype frequency of occurrence cow arkhangelsk region |
| url | https://www.agronauka-sv.ru/jour/article/view/1184 |
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