Population Genetic Structure of Ural Black Pied Cattle

Modorov, M. V.; Tkachenko, I. V.; Гринь, Андрей Анатольевич; Sevost’yanov, M. Yu.; Zezin, N. N.

doi:10.1134/s1022795421040104

Cited by 6 publications

(7 citation statements)

References 18 publications

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“…The highest (5.760) and lowest (2.160) numbers of effective alleles were detected in the TGLA122 and SPS115 loci, which also correlates with the results obtained by M.V. Modorov et al (2021). The values of observed and expected heterozygosity (0.729 and 0.694) obtained for our sample were similar to those for the Black Pied cattle from the Sverdlovsk Region (0.73 and 0.72) (Modorov et al, 2021) but lower than the numbers for the pedigree bulls of the same breed (0.779 and 0.751) (Zinovieva et al, 2015).…”

Section: Discussionsupporting

confidence: 89%

“…Modorov et al (2021). The values of observed and expected heterozygosity (0.729 and 0.694) obtained for our sample were similar to those for the Black Pied cattle from the Sverdlovsk Region (0.73 and 0.72) (Modorov et al, 2021) but lower than the numbers for the pedigree bulls of the same breed (0.779 and 0.751) (Zinovieva et al, 2015).…”

Section: Discussionsupporting

confidence: 82%

“…Analysis of 11 microsatellite loci from the whole sample of Black Pied cattle of the Novosibirsk Region revealed 105 alleles, which is lower than the number obtained after investigating 13 224 Holsteinized Black Pied animals in the Sverdlovsk Region (Modorov et al, 2021). The 15 loci that included the microsatellites investigated in our study contained 164 alleles, but the frequency of 38 of them did not exceed 0.1 %.…”

Section: Discussioncontrasting

confidence: 81%

“…A similar score for this locus (14 alleles) was obtained in a study investigating the Black Pied breed from the Pskov Region (Arzhankova et al, 2015). The lowest average number of alleles per locus (5.333) was found in TGLA126, which correlates with the analogous parameter in the Black Pied breed from the Sverdlov Region (7 alleles, the frequency of 2 of them does not exceed 0.1 %) (Modorov et al, 2021). The highest (5.760) and lowest (2.160) numbers of effective alleles were detected in the TGLA122 and SPS115 loci, which also correlates with the results obtained by M.V.…”

Section: Discussionsupporting

confidence: 67%

“…Studying individual populations of the same breed makes it possible to assess their genetic diversity, relationships, and breed improve ment potential (Zsolnai et al, 2014;Agung et al, 2016;Szucs et al, 2019). However, studies on genetic diversity in local Black Pied breed populations are very few (Sma ragdov, 2018;Modorov et al, 2021); this is especially true for the Novosibirsk Region, which remains poorly studied in this regard.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of genetic diversity and phylogenetic relationships in Black Pied cattle in the Novosibirsk Region using microsatellite markers

2022

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There are currently over a thousand indigenous cattle breeds well adapted to local habitat conditions thanks to their long history of evolution and breeding. Identification of the genetic variations controlling the adaptation of local cattle breeds for their further introduction into the genome of highly productive global breeds is a matter of great relevance. Studying individual populations of the same breed with the use of microsatellite markers makes it possible to assess their genetic diversity, relationships, and breed improvement potential. Although the Black Pied breed is the most common dairy cattle breed in Russia, there are only a few studies on genetic diversity in local Black Pied populations in some Russian regions. The goal of the present study was to analyze the genetic diversity in Black Pied cattle populations in the Novosibirsk Region and compare them with other Russian populations; to identify significantly divergent populations with a view to preserving them under the programs aimed at maintaining the genetic diversity of the domestic Black Pied breed. DNA samples from 4788 animals of the Black Pied breed from six breeding enterprises in the Novosibirsk Region have been studied using 11 microsatellite markers. No significant differences in genetic variability parameters were found between individual populations. Private alleles have been identified in five out of six populations. Five populations have shown inbreeding coefficient values (FIS) below zero, which indicates heterozygosity excess. The population distribution test, principal component analysis, FST and DEST values, cluster analysis, and phylogenetic analysis have revealed two populations genetically distinct from the others. Essentially, the genetic diversity parameters of the six studied Black Pied cattle populations from the Novosibirsk Region show no significant differences from other Russian populations of the breed. Excess heterozygosity is observed in most breeding enterprises, which is a sign of a low inbreeding rate. To maintain the genetic diversity of the Russian Black Pied cattle, we recommend focusing on the two populations with significant genetic distinctions from the others.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionsupporting

confidence: 82%

Section: Discussioncontrasting

confidence: 81%

Section: Discussionsupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

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Assessment of genetic diversity and phylogenetic relationships in Black Pied cattle in the Novosibirsk Region using microsatellite markers

2022

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Comparative evaluation of the breeding value of Holstein bulls-producers

Gorelik,

Sevostyanov,

Sagitdinov

2023

E3S Web of Conf.

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Modern dairy cattle breeding efficiency is largely determined by the strategy of choosing a producer for herd reproduction, which determines the growth rate of herd productivity for the next 3 to 5 years. According to the results of 2022, there are 20 organisations in the Sverdlovsk region with milk production per feed cow of more than 9 thousand kg, including 10 farms with milk production of more than 10 thousand kg. The best farm in the region, APC “Kilachevsky”, produced an average of 12829 kg of milk for each of 3000 cows. Two record-breaking cows were milked there, each of which yielded more than 21 tonnes of milk for a standard lactation. Thirty-four breeding bulls were included in the study. As a result of their evaluation, it was found that in bulls whose genomic breeding value for milk yield exceeded 1000 kg of milk 80.0% of producers were actual improvers for this trait, and in bulls with low genomic breeding value for milk yield (0-99 kg) only 25.0% of producers were actual improvers. Bulls with a negative breeding value for milk production in 66.6 percent of cases turned out to be actual improvers. In terms of protein content in milk, the dependence is similar, the higher the genomic value of the sire according to MDB, the more bulls actually have a positive effect on the protein-milk content of daughters (Tables 3,4). However, the number of sires that confirmed genomic breeding value for protein-milk yield is much less than for milk yield. For milk yield, 17 sires out of 34 (50.0%) received confirmation of breeding value, and for protein-milk yield only 11 (32.0%).

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