scholarly journals Analyzing the Genetic Structure of Novoaltayskaya Horse Breed Taking into Account the Allele Pool of the Base Breeds

2019 ◽  
Author(s):  
Nina Blokhina ◽  
Marina Tsareva
Keyword(s):  
Genetic Structure ◽  
Horse Breed ◽  
Allele Pool

scholarly journals Biodiversity and functional variability of the allele pool of horse breed populations

2021 ◽  
Vol 848 (1) ◽  
pp. 012229
Author(s):  
N V Blohina ◽  
S I Sorokin ◽  
L A Khrabrova ◽  
A A Zelenchenkova ◽  
B Z Bazaron
Keyword(s):  
Horse Breed ◽  
Allele Pool

scholarly journals GENETIC VARIABILITY OF SIRE BULLS IN THE ARKHANGELSK POPULATION OF THE KHOLMOGORY BREED WHEN OBSERVED OVER GENERATIONS

2020 ◽  
pp. 47-54
Author(s):  
В.П. ПРОЖЕРИН ◽  
Ия.В. СЕЛЬКОВА ◽  
А.Е. КАЛАШНИКОВ
Keyword(s):  
Genetic Structure ◽  
Genetic Distance ◽  
Observation Interval ◽  
High Sensitivity ◽  
Blood Groups ◽  
Steady Increase ◽  
Holstein Breed ◽  
Individual Marker ◽  
Over Time ◽  
Allele Pool

Проблема и цель. Целью настоящего исследования являлось изучение и анализ генетической структуры потомства у быков-производителей по поколениям (периодам наблюдений). Мониторинг генетической структуры холмогорской породы крупного рогатого скота позволяет провести исследования, дающие информацию во временной шкале по частотам генотипов групп крови для холмогорской породы; осуществлено наблюдение для интервалов наблюдений. Методология. Проведены исследования частот аллелей ЕАВ-локуса. Для холмогорской породы по быкам-производителям определена динамика формирования современной генетической структуры архангельской популяции. Определены частотные характеристики аллелей и анализ динамики их изменения. Результаты. Исследования показали, что аллелофонд холмогорской породы сбалансирован, но отмечена динамика убыли и возрастания частот отдельных аллелей-маркеров, которые свойственны только холмогорской породе крупного рогатого скота. Наблюдалась также достаточно высокая чувствительность и специфичность тестирования. Отмечено, что степень гомозиготности в разрезе анализируемых поколений быков-производителей имеет тенденцию к снижению с 11,4 % (1-й интервал наблюдений) до 5,7 % (9-й интервал). С другой стороны, количество эффективных аллелей – к росту – с 8,8 до 17,6 %. Наибольшее генетическое расстояние имеют чистокровные быки-производители холмогорской породы первого-второго интервалов наблюдений с голштинизированными восьмого-девятого интервалов (расстояния 0,25 и 0,23; 0,27 и 0,47 соответственно). Продолжающееся дистанцирование современных быков-производителей от предыдущих поколений подтверждает проведение поглотительного скрещивания и смещение породы в сторону голштинской с течением времени и в перспективе развития. Заключение. В результате работы проведена оценка генетической структуры холмогорской породы КРС Архангельской популяции и установлено, что в процессе проводимых селекционных мероприятий у быков холмогорской породы отмечается устойчивое увеличение числа аллелей, а чистопородные быки генетически дистанцируются от быков, межпородно гибридизованных с голштинской породой, в ряду поколений с течением времени. Выявлено, что наиболее генетически отдаленными являются чистопородные и голштинизированные быки-производители. Kholmogorskaya breed, Holsteinized stud bulls, allele pool, alleles of the EAB locus blood groups, homozygosity, genetic similarity, genetic distance Problems and purpose of investigation. The purpose of this research was to study and analyze the genetic structure of the bulls ofspring of stud bulls by generations (observation periods). Monitoring of the genetic structure of Kholmogorskaya breed made it possible to carry out studies that provide information on the time scale on the frequencies of genotypes of blood groups for Kholmogorskaya breed. The checkup of the observation intervals was carried out. Methodology. The studies of the allele frequencies of the EAB-locus were carried out. For Kholmogorskaya breed stud bulls, the dynamics of formation of the modern genetic structure of the Arkhangelsk population was determined. The frequency characteristics of the alleles and the analysis of the dynamics of their change were determined. Results. Studies showed that the allele pool of Kholmogorskaya breed was balanced, but the dynamics of the decrease and increase in the frequencies of individual marker alleles, which were characteristic only of Kholmogorskaya breed of cattle, were noted, and a sufciently high sensitivity and specifcs of testing wereobserved. It was noted that the degree of homozygosity in the context of the analyzed generations of stud bulls tended to decrease from 11.4 % (1st observation interval) to 5.7 % (9th interval). On the other hand, the number of efective alleles increased from 8.8 to 17.6 %. The maximal genetic distance was in purebred stud bulls of Kholmogorskaya breed of the frst and second observation intervals with Holsteinized bulls of the eighth to ninth generation intervals (distances 0.25 and 0.23; 0.27 and 0.47, respectively). The continuing distancing of modern stud bulls from previous generations confrmed accumulation cross breeding and the shift of the breed towards Holstein over time and in the future. Conclusion. As a result of the work, the assessment of the genetic structure of Kholmogorskaya breed of the Arkhangelsk population was carried out and it was found that in the process of breeding activities in the bulls of Kholmogorskaya breed there was a steady increase in the number of alleles, and purebred bulls genetically distance themselves from bulls interbreed hybridized with Holstein breed in a number of generations over time. It was revealed that the most genetically distant animals were purebred and Holsteinized stud bulls.

scholarly journals Study of allele pool and genetic structure of russian population of lowland-caucasian line of European bison (Bison bonasus)

2017 ◽  
Vol 15 (2) ◽  
pp. 4-10
Author(s):  
Arsen V Dotsev ◽  
Polina V Aksenova ◽  
Valeriya V Volkova ◽  
Veronika R Kharzinova ◽  
Olga V Kostyunina ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Population Genetic ◽  
Bos Taurus ◽  
Bison Bison ◽  
European Bison ◽  
Bison Bonasus ◽  
Effective Population ◽  
Average Value ◽  
Inbreeding Level ◽  
Allele Pool

Background. The European bison (Bison bonasus) is the only wild ox of Europe, survived to our days. Whilst numerous studies have been undertaken to characterize the Lowland line of European bison, it is little known about allele pool and population genetic structure of the Lowland-Caucasian line of wisent. Materials and methods. The samples were collected from twenty-six animals of Russian breeding nucleus of Lowland-Caucasian line. Ten Bos Taurus microsatellites (TGLA227, BM2113, ETH10, SPS115, TGLA122, INRA23, TGLA126, BM1818, ETH225, and BM1824) were used for analysis. Results. Eight of ten microsatellite loci (excluding TGLA227 and INRA23) were polymorphic. The number of alleles per locus is varied of one to five with average value of 2.80 ± 0.47. The alleles, which are specific for Lowland-Caucasian line, were identified. We observed relatively high inbreeding level (FIS = 0,091) and very low effective population size (Ne = 1.8, 95% CIs, Parametric 1.1-2.9). We showed that two genetically distinct groups have taken part in formation of allele pool of studied wisent population. Conclusion. Our data indicated that the development of breeding program to decrease the inbreeding degree and to increase the level of genetic diversity is necessary.

Study of Allele Pool and Genetic Structure of Russian Population of Lowland-Caucasian Line of European Bison (Bison bonasus)

2018 ◽  
Vol 8 (1) ◽  
pp. 31-36 ◽  
Author(s):  
A. V. Dotsev ◽  
P. V. Aksenova ◽  
V. V. Volkova ◽  
V. R. Kharzinova ◽  
O. V. Kostyunina ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Russian Population ◽  
Bison Bison ◽  
European Bison ◽  
Bison Bonasus ◽  
Allele Pool

CHARACTERISTICS OF ALLELE POOL OF THE ROMANOV SHEEP BREED FOR THE PRION PROTEIN GENE ASSOCIATED WITH GENETIC SUSTAINABILITY TO SCRAPIE

2017 ◽  
Vol 52 (6) ◽  
pp. 1157-1165
Author(s):  
E.A. Gladyr ◽  
◽  
T.E. Deniskova ◽  
V.A. Bagirov ◽  
O.V. Kostyunina ◽  
...  
Keyword(s):  
Prion Protein ◽  
Protein Gene ◽  
Sheep Breed ◽  
Prion Protein Gene ◽  
Allele Pool
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