Extraterritorial-constitutional features of Вlack-and-Spotted Dairy cows of different affinity and production types

Голуб, О М; Shalovylo, S. H.; Bojko, A.; Oseredchuk, R. S.

doi:10.32718/nvlvet8907

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…Наразі група чорно-рябих порід великої рогатої худоби найбільш поширена як у світі, так і в Україні (Poslavska et al, 2016;Shcherbatyj et al, 2017;Golub et al, 2018;Sachuk et al, 2019;Borshch et al, 2020;Slivinska et al, 2020). До цієї групи порід зачисляють голландську чорно-рябу, голштинську чорно-рябу США і Канади, українську чорно-рябу молочну та ін.…”

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Influence of seasonal changes on the karyotype stability of Ukrainian Black and White dairy cows

Temekh

Starodub

2020

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Of the total dairy cattle, 49 % belong to the Ukrainian black-and-white dairy breed. Animals are demanding to the conditions of detention, so the aim of the study was to study the impact of seasonal changes in the environment on the stability of the karyotype of cows of three age groups (first-born, adult and cows 8–10 years). The variability of the karyotype of the studied animals in different seasons of the year was manifested in the form of quantitative and structural disorders of chromosomes. Of the total dairy cattle, 49 % belong to the Ukrainian black-and-white dairy breed. Animals are demanding to the conditions of detention, so the aim of the study was to study the impact of seasonal changes in the environment on the stability of the karyotype of cows of three age groups (first-born, adult and cows 8–10 years). The variability of the karyotype of the studied animals in different seasons of the year was manifested in the form of quantitative and structural disorders of chromosomes. In primiparous women, the most pronounced genomic variability (aneuploidy) was observed in summer and winter and was 16.4 % and 8.8 %. In summer, this variability was more than twice the limit of spontaneous chromosomal variability. The highest percentage of structural chromosome abnormalities (chromosomal breaks) in cows of three age groups was observed in winter and was 2.5 %, 2.8 %, 3.0 %, respectively, and did not exceed the limit of spontaneous mutagenesis characteristic of cattle. An increased proportion of lymphocytes with a micronucleus in first-borns and cows aged 8–10 years (5.6 ‰, 6.4 ‰, respectively) was observed in the summer. The increased proportion of dinuclear lymphocytes appeared in the first-born in the summer season and amounted to 7.6 ‰ (at P > 0.99), and in cows 8–10 years, this variability in the summer season was 6.2 ‰, in winter – 6.7 ‰ with a statistically significant difference (P > 0.95) between the spontaneous level of cytogenetic variability. The association between karyotype stability of the studied animals and seasonal environmental factors was determined using a correlation coefficient (r). A significant positive correlation was found between aneuploidy and air temperature in primiparous and cows aged 8–10 years, relative humidity, precipitation and wind strength and chromosomal gaps in primiparous and adult cows, atmospheric pressure, relative humidity and asynchronous divergence. in adult cows and cows aged 8–10 years. A positive reliable associative dependence of the appearance of micronucleus lymphocytes and dinuclear lymphocytes on the amount of precipitation and wind strength in this area in primiparous and adult cows was established.

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Section: вступunclassified

Influence of seasonal changes on the karyotype stability of Ukrainian Black and White dairy cows

Temekh

Starodub

2020

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“…Генетичні ресурси тваринництва є одними із вагомих у стратегічному плані багатств будь-якої країни (Shmal'gauzen, 1969;Ibatullin et al, 2007;Kovalchuk, 2016). Молочне та м'ясне скотарство були, є і будуть провідними галузями у тваринництві (Golub et al, 2018). Використання їх генетичного потенціалу у багатьох випадках обумовлює економіку господарств, які займаються розвитком молочного та м'ясного скотарства (Jejsner, 1986).…”

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“…Тварини м'ясних порід мають добру пластичність у пристосуванні до різних природно-кліматичних умов усіх зон України та господарських умов більшості господарств. Висока продуктивність тварин, відносно швидкий темп їх відтворення та скороспілість, а також можливість краще, порівняно з іншими видами сільськогосподарських тварин, використовувати грубі та пасовищні корми і давати м'яку, соковиту яловичину -сприятимуть розведенню тварин тих порід (Kharko et al, 2017;Bodnaruk et al, 2017).…”

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Ethological observations of reproductive qualities of Aberdeen-Angus and Grey Ukrainian breed in the conditions of forest-steppe and steppe zones of Ukraine

et al. 2019

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The results of researches in modern herds of meat breeds – classical British, Aberdeen-Angus and autochthonous gray Ukrainian for conducting of pollination in research farms “Polivanivka” of the Institute of Agriculture of Steppe Regions of NAAS of Ukraine and “Progress” of Chernihiv Institute of Agro-Industrial Production in 2009–2012. The ethological behavior of mothers (cows) and their calves was studied in the conditions of keeping and growing livestock on the technology of meat cattle breeding. Animals for conducting research were selected taking into account age, body weight of cows, sex calves, body weight of calves at birth. Collection of accounting materials was carried out according to the data of the primary technological and pedigree records, artificial insemination magazines, materials of ethological observations. Observations were conducted in accordance with the task of preserving genetic diversity in gene pool herds of Aberdeen-Angus and Gray Ukrainian breeds. The herds of animals in the experimental farms kept the meat keeping technology adopted by the farms. The feeding of breeding stock of animals of these breeds was carried out in accordance with established and accepted at experimental farms rations, which consisted of the presence and number of harvested at farms feed. Obtained materials indicate the plasticity and the ability to control the system reproduction reproductive population in modern economic conditions farms. Attention is paid not only to purely selective approaches, but also an attempt is made to substantiate the necessity of adapting breeding breeds to modern systems of economic relations. Knowledge of the ethology of Aberdin-Angus and gray Ukrainian breeds in the conditions of the forest-steppe and steppe zones of Ukraine will allow controlling the processes of reproduction of mother and repair animals in livestock breeding herds, as well as the conservation of genetic resources of aboriginal breeds.

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Extraterritorial-constitutional features of Вlack-and-Spotted Dairy cows of different affinity and production types

Cited by 2 publications

References 6 publications

Influence of seasonal changes on the karyotype stability of Ukrainian Black and White dairy cows

Influence of seasonal changes on the karyotype stability of Ukrainian Black and White dairy cows

Ethological observations of reproductive qualities of Aberdeen-Angus and Grey Ukrainian breed in the conditions of forest-steppe and steppe zones of Ukraine

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