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TESTING AND DISTRIBUTION OF A NEW GENETIC ANOMALY IN HOLSTIN CATTLE HMW (OMIA ID 002819-9913)

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В 2022 году впервые появилась информация о новой аномалии голштинского скота. Телята, гомозиготные носители аномалии, не могут встать на ноги после рождения, 52% таких носителей гибнут в возрасте до 18 мес. Так называемый синдром мышечной слабости (HMW) встречается в популяции голштинского скота у 17% животных. Рецессивный гаплотип, приводящий к повышенной смертности молодняка, локализован на хромосоме 16, в гене CACNA1S. Нами разработана и успешно апробирована, с использованием образца, полученного от известного носителя, тест-система на основе аллель-специфической ПЦР для выявления синдрома мышечной слабости. Проанализированы данные племенного учета коров и телок из 3 племенных хозяйств Краснодарского края (n=7616). Носителями синдрома мышечной слабости являются свыше 5,5% животных. Проведенное генотипирование выборки коров (n=25) быкопроизводящей группы по локусу CACNA1S выявило 28% носителей. Аномалия HMW голштинского скота имеет опасный уровень распространения в субпопуляции Краснодарского края и, на наш взгляд, требует ограничения использования быков-носителей HMW. In 2022, information about a new anomaly in Holstein cattle first appeared. Calves who are homozygous carriers of the anomaly cannot stand on their feet after birth; 52% of calves with such carriers die before the age of 18 months. The so-called muscle weakness syndrome (HMW) occurs in 17% of the Holstein cattle population. The recessive haplotype, leading to increased mortality of calves, is localized on chromosome 16, in the CACNA1S gene. A test system based on allele-specific PCR was developed and successfully tested, using a sample obtained from a known carrier, to detect “muscle weakness” syndrome. Data from breeding records of cows and heifers from three breeding farms in the Krasnodar region (n=7616) were analyzed. Over 5.5% of animals are probably carriers of muscle weakness syndrome. Genotyping of a sample (n=25) of the bull-producing group of animals at the CACNA1S locus revealed 28% of carriers. The anomaly of HMW Holstein cattle has a dangerous level of distribution in the subpopulation of the Krasnodar Territory and, in our opinion, requires limiting the use of bulls carrying HMW.
Title: TESTING AND DISTRIBUTION OF A NEW GENETIC ANOMALY IN HOLSTIN CATTLE HMW (OMIA ID 002819-9913)
Description:
В 2022 году впервые появилась информация о новой аномалии голштинского скота.
Телята, гомозиготные носители аномалии, не могут встать на ноги после рождения, 52% таких носителей гибнут в возрасте до 18 мес.
Так называемый синдром мышечной слабости (HMW) встречается в популяции голштинского скота у 17% животных.
Рецессивный гаплотип, приводящий к повышенной смертности молодняка, локализован на хромосоме 16, в гене CACNA1S.
Нами разработана и успешно апробирована, с использованием образца, полученного от известного носителя, тест-система на основе аллель-специфической ПЦР для выявления синдрома мышечной слабости.
Проанализированы данные племенного учета коров и телок из 3 племенных хозяйств Краснодарского края (n=7616).
Носителями синдрома мышечной слабости являются свыше 5,5% животных.
Проведенное генотипирование выборки коров (n=25) быкопроизводящей группы по локусу CACNA1S выявило 28% носителей.
Аномалия HMW голштинского скота имеет опасный уровень распространения в субпопуляции Краснодарского края и, на наш взгляд, требует ограничения использования быков-носителей HMW.
In 2022, information about a new anomaly in Holstein cattle first appeared.
Calves who are homozygous carriers of the anomaly cannot stand on their feet after birth; 52% of calves with such carriers die before the age of 18 months.
The so-called muscle weakness syndrome (HMW) occurs in 17% of the Holstein cattle population.
The recessive haplotype, leading to increased mortality of calves, is localized on chromosome 16, in the CACNA1S gene.
A test system based on allele-specific PCR was developed and successfully tested, using a sample obtained from a known carrier, to detect “muscle weakness” syndrome.
Data from breeding records of cows and heifers from three breeding farms in the Krasnodar region (n=7616) were analyzed.
Over 5.
5% of animals are probably carriers of muscle weakness syndrome.
Genotyping of a sample (n=25) of the bull-producing group of animals at the CACNA1S locus revealed 28% of carriers.
The anomaly of HMW Holstein cattle has a dangerous level of distribution in the subpopulation of the Krasnodar Territory and, in our opinion, requires limiting the use of bulls carrying HMW.

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