Milk productivity and reproductive ability of ukrainian black-spotted dairy breed cows of different type of constitution

Shсherbatyj, Z. Y.; Bodnar, P. V.; Kropyvka, Yu. G.

doi:10.15421/nvlvet7440

Cited by 8 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.…”

Section: вступunclassified

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

Temekh

Starodub

2020

SMLNUVMBA

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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

SMLNUVMBA

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“…Інтенсифікація розвитку такої галузі тваринництва, як молочна спрямована на пошук шляхів найбільш ефективного використання кормів, що за вартістю займають 55-60% і більше на виробництво молока (Shсherbatyj et al, 2017;Kharko et al, 2017). У зв'язку з цим для збереження поголів'я, підвищення продуктивності та рентабельності його виробництва фахівці працюють над вирішенням проблеми повноцінної збалансованої годівлі дійних корів.…”

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Probiotic feed supplement “PROGAL” in feeding the milking cows

Denkovich¹,

Pivtorak²,

Gordiychuk³

2019

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Full-fledged feeding of milking cows, based on scientifically based standards, is the key to realizing their genetic potential for productivity, preserving health, normalizing reproductive capacity, as well as the rational use of fodder resources and the proper payment of feed. Nowadays, the situation regarding the standardization of cattle feeding in the world and domestic, both in scientific and industrial practice, has changed radically, which requires a significant revision of the traditional provisions on the organization of full feeding of cows, especially high-productive ones. At the same time, the conceptual requirements for the organization of standardized nutrition and full feeding of dairy cattle should be based on the generalization of the world experience of the animal's need for energy, nutrients and biologically active substances, taking into account age and level of productivity, conditions of keeping with special emphasis on quality and products. In conditions of intensive milk production, in order to ensure high productivity and at the same time to maintain the health of animals, it is impossible to do it without the use of fodder of a natural substance, which should include additives with a probiotic effect. One of these is the “PROGAL” feed additive, which contains a probiotic component: Laktobacilus casei strain (CM 1759), a potentiating component is maltodextrin, a fructo-oligosaccharide, and is a probiotic additive for ruminants. High dairy productivity requires constant monitoring of metabolism, animal health, early diagnosis and timely treatment and prevention. The whole process of metabolism takes place in the digestive tract and is transmitted to the cells of the body through blood. This explains the relevance of the study of biochemical processes in rumination. The basis of the research is the task of optimizing the normalized feeding of real cows due to the use in the diet of probiotic supplement “PROGAL” on the background of a semi-concentrated juicy silage-hay type feeding. On the basis of scientific-economic (90 days) experiment, to determine its influence on the processes of digestion in the rumen, milk productivity and quality indicators of milk and to conclude on the optimal amount of it in the diet. The studies were conducted on Simmental cows in the conditions of the “Pchany-Denkovych” farm in the Zhydachiv district of Lviv region. It was found that feeding of the diet with feed supplements “PROGAL” aided to improve the intensity of metabolic processes in the body of cows, in particular in the rumen. Possible growth of amylo- and cellulosolytic and proteolytic bacteria was found, which ensured their enzyme activity and caused intensive hydrolysis of feed carbohydrates, resulting in an increase in LFA as precursors to milk fat. A positive result was obtained with respect to the level of dairy productivity of the cows of the experimental groups in comparison with the control group on the average daily milk yield, which is 1.0–2.3 kg, or 4.4–9.7% more. There was a steady upward trend in fat content in milk by 0.05% and protein by 0.02–0.04%, which indicates an improvement in its quality. Consequently, the studies conducted concerning the estimation of the productive action of bio supplement “PROGAL” on milking productivity of cows and quality indicators of milk, gives reason to confirm the feasibility of its use in the structure of the diet when feeding cows. The optimal dose of compound feed is 10 g/day, the maximum dose can be no more than 15 g/day. No adverse effects of “PROGAL” supplement on the overall functional status of cows were found.

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“…Оптимальне поєднання цих показників є критерієм співвідношення "генотипсередовище", що характеризує ступінь пристосованості популяції, стада або окремої тварини до певних виробничо-технологічних умов (Zubets, 2003;Kuziv & Fedorovych, 2016;Babik, 2018;Crowe et al, 2018). У сучасних умовах інтенсивного ведення скотарства питання покращення відтворювальних якостей корів представляє значний як практичний, так науковий інтерес, оскільки порушення відтворних функцій у великої рогатої худоби, скорочує термін її господарського використання, знижує рівень молочної продуктивності, а отже рентабельність галузі скотарства в цілому (Berry et al, 2014;Bolgova, 2014;Shcherbatyy et al, 2017).…”

Section: вступunclassified

Evaluation of the reproductive ability of cows of different production types of the simmental breed

2019

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In today 's conditions of intensive cattle breeding, the improvement of the reproductive qualities of cows has significant practical and scientific interest since reproductive function impairment of cattle, shortens the period of its economic use, lowers the level of dairy productivity and therefore the profitability of the livestock industry as a whole. In this respect the reproductive metrics studying of cows of different production types of Simmental breed is important. Researches were held at agricultural limited liability company “Litinske” in the Drohobych district of Lviv oblast. It is established that the average age of the first insemination of Simmental breed animals was 549 days or 18.1 months, age of first calving – 827.3 days or 27.2 months, and the live weight in the specified physiological periods – 453.7 and respectively 529.1 kg. The duration of pregnant heifers was 278.4 days, and the duration of the service period of cows, depending on lactation, was within 89.7–94.4, the interval period – within 371.8–375.1 and the dry period – within 73.1–73.5 days. Indicators of reproductive capacity of animals depend on their production type. In particular, the first insemination and the first calving of animals of dairy production type occurred later than of animals of meat and dairy and meat types. However, heifers of dairy production type were smaller live weight during these periods compared to animals of other production types. It is found that the shortest duration of pregnancy and the longest duration of service and inter service periods were characterized by cows of dairy production type. The strength of impact of production type of animals on age of the first insemination accounted for 11.5% of the total phenotypic variability on the age of the first calving – 9,9%, on the duration of the service period – 7.8–11.0%, inter-calving – 4.8–10.4%, and on the duration of the body and the dry period was insignificant and unbelievable.

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Milk productivity and reproductive ability of ukrainian black-spotted dairy breed cows of different type of constitution

Cited by 8 publications

References 0 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

Probiotic feed supplement “PROGAL” in feeding the milking cows

Evaluation of the reproductive ability of cows of different production types of the simmental breed

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