Changes in the gene pool of the Kalmyk cattle

Чимидова, Н В; Moiseykina, L. G.; Ubushieva, A. V.; Kalugina, Olga V; Avsheeva, Aisa B

doi:10.33284/2658-3135-103-4-65

Cited by 2 publications

(1 citation statement)

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“…Животные этой породы отличаются крепкой конституцией, ей нет равных по здоровью, выносливости, устойчивости к заболеваниям. Мясо говядины, полученное от калмыцкого скота, отличается «мраморностью» и высочайшим качеством [5,6].…”

Section: Introductionunclassified

Biotechnologies for accelerated reproduction of Kalmyk cattle

Babenkov

Khakhlinov²,

Sangadzhiev³

et al. 2023

Vestn. Ross. univ. družby nar., Ser. Agron. životnovod.

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In Russia, the number of beef cattle until recently was concentrated mainly in Kalmykia and adjacent regions. However, the lack of purposeful breeding has led to the fact that the purebred livestock of Kalmyk meat breed has significantly decreased and lost its unique qualities. Introduction of embryo transfer biotechnology can solve the problem of restoring breed qualities under the condition of accelerated reproduction of genotyped livestock. The aim of the research was to study Kalmyk breed response to polyovulation considering further increase in transferrable embryo productivity - the main indicator specific to each breed. As the formation of the breed took place in pasture conditions with a pronounced seasonal sexual cycle, there were doubts about the possibility of using embryo transfer technology in any season. The experiments were carried out on Kalmyk cows at Kalmytskoye farm in 2010 and at the Regional Research and Production Center for Reproduction of Farm Animals, Kalmyk State University, in 2022. The results of the study showed that it was better to synchronize sexual hunting using prostaglandins after 3-4 months after calving (May-October). According to the results of immunogenetic testing, 10 breeding cows and 2 breeding bulls were selected as donors. In September-October, in order to test the embryo transfer method in nomadic animal husbandry, the first work was carried out to stimulate poliovulation and obtain embryos from 3 donor cows. A total of 23 embryos and eggs were obtained, 10 of which were suitable for transplantation. Transferrable embryos were frozen on a ZEM-4 software freezer after equilibration in 1.5 M ethylene glycol cryoprotector solution.

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Section: Introductionunclassified

Biotechnologies for accelerated reproduction of Kalmyk cattle

Babenkov

Khakhlinov²,

Sangadzhiev³

et al. 2023

Vestn. Ross. univ. družby nar., Ser. Agron. životnovod.

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Assessment the Kalmyk cattle breed genetic diversity in the Kalmykia republic based on genome-wide analysis

Gorlov,

Slozhenkina,

Fedorov

et al. 2023

Vestnik of the Russian agricultural science

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In the article results of the biodiversity evaluation of the indigenous breed resources of cattle of the Republic of Kalmykia by whole-genome genotyping are presented. The objects of research were samples of biomaterial obtained from two herds of Kalmyk cattle raised in the Republic of Kalmykia (n = 20). Other samples for population-genetic studies were taken from L.K. Ernst FRC (Podolsk, Russia). Modern molecular-genetics and bioinformatics methods were used in this research. As a result, DNA was isolated and comparative study was carried out. The obtained DNA samples are suitable for carrying out whole-genome SNP studies using Bovine SNP HD BeadChip according to their qualitative and quantitative characteristics. The concentration of double-stranded DNA in the studied samples varied up 16 to 80 ng/µl, the ratio of OD260/OD280 varied up 1.77 to 2.12. The efficiency of genotyping (call rate) varied up 99.72 to 99.84%. The novelty of this research is the genetic diversity of two populations of Kalmyk cattle raised in the Republic of Kalmykia was established at the first time using high-density DNA chips and population-genetic estimation was also carried out for comparison with three breeds of Turano-Mongolian origin. Kalmyk breed have shown the highest level of genetic diversity compared to other breeds of Turano-Mongolian origin. This fact may be a consequence of the use of free mating in the breeding , as well as a relatively high number of Kalmyk cattle compared to other breeds. The minimum level of genetic diversity established in the Yakut breed is a consequence of the small number of livestock. The results obtained will be useful in the development of breeding and conservation programs of the Kalmyk cattle.

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Changes in the gene pool of the Kalmyk cattle

Cited by 2 publications

References 0 publications

Biotechnologies for accelerated reproduction of Kalmyk cattle

Biotechnologies for accelerated reproduction of Kalmyk cattle

Assessment the Kalmyk cattle breed genetic diversity in the Kalmykia republic based on genome-wide analysis

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