Analysis of breed and class composition cattle of the ural region

Гридин, В Ф; Гридина, С. Л.

doi:10.31857/s2500-26272019150-51

Cited by 13 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Однако наряду с положительными результатами перехода на новую породу выявились и проблемы: животные данной породы оказались требовательными к условиям кормления и содержания, а снижение воспроизводительных функций, которое сопровождается увеличением длительности сервис-периода, сокращением количества приплода, в конечном итоге привело к изменению длительности продуктивного долголетия и поставило новые задачи перед работниками, занятыми в отрасли молочного скотоводства [7][8][9][10][11][12].…”

Section: введение/Introductionunclassified

“…При разведении данных животных необходимо учитывать и то, что для полного проявления генетического потенциала продуктивности их необходимо обеспечить сбалансированным по всем питательным веществам рационом. Применение кормовых добавок как инструмента повышения продуктивности молочного скота актуально в современном сельском хозяйстве [12][13][14]. Кормовые добавки обеспечивают нормализацию минерального, витаминного обмена, повышают резистентность, а также улучшают общее состояние здоровья животных 2 [18][19][20][21].…”

Section: введение/Introductionunclassified

See 1 more Smart Citation

Dynamics of variation of dairy characteristics in cows when using the feed additive “VivAktiv”

Baerinas,

Neverova,

Gorelik

et al. 2024

Agrarnaâ nauka

View full text Add to dashboard Cite

Relevance. Holstein dairy cattle are bred in the Sverdlovsk region, its improvement is carried out by selecting and selecting the best for further breeding. In order for them to display their genetic potential of productivity, it is necessary to ensure a balanced diet. The aim of the work was to assess the diversity of dairy characteristics in Holstein cows when using the “VivAktiv” feed additive.Methods. To conduct the study, 4 groups of calved heifers with 10 heads each were formed in a typical breeding plant for the region: a control group and three experimental ones based on the principle of pairs of analogues. The dairy productivity of cows was evaluated for the first lactation and for the calendar year by control milking once a month. The fat and protein content in milk was assessed in an average milk sample once a month from each cow. The coefficient of variability (variation) was calculated according to the generally accepted formula.Results. As a result of the conducted research, it was found that the use of the “VivAktiv” feed additive did not significantly affect the productivity of cows. The milk yield for lactation by group was 10582.3 ± 187.35, 10640.8 ± 163.89, 10293.9 ± 176.45 and 10080.1 ± 178.13 kg, respectively, the difference was unreliable and insignificant. Considering the changes in the coefficient of variation between the groups, we can note a lower variability of the trait in cows of the 2nd experimental group. The animals of the control group came in second place. The largest variety of the trait turned out to be in the 3rd experimental group. Thus, the variability of the trait is influenced by the period (month) of lactation, to some extent the duration of lactation, as well as the use of the feed additive “VivAktiv”, which had a stabilizing effect on cow yield when used at a dose of 20 g/head/day.

show abstract

Section: введение/Introductionunclassified

Dynamics of variation of dairy characteristics in cows when using the feed additive “VivAktiv”

Baerinas,

Neverova,

Gorelik

et al. 2024

Agrarnaâ nauka

View full text Add to dashboard Cite

show abstract

Breeding parameters of the main economically useful traits of milk productivity of black-and-white Ural type cows

Sevostyanov¹,

Likhodeevskaya²,

Горелик³

2021

jour

View full text Add to dashboard Cite

Currently first place in the number is a domestic black-motley breed, second place – Holstein. In the Sverdlovsk region, the Ural type of black-and-white cattle was created and officially registered in 2002 by crossing the breeding stock of the black-and-white breed of the Ural offspring with the Holstein bulls. In recent years, there has been a stable significant increase in milk productivity, as a result of which in five years the milk yield for the herd increased by 1388 kg of milk, and for full-aged cows by 1655 kg and reached 10257 kg. A significant increase in productivity was accompanied by a significant increase in the fat content in milk by 0.26% on average for the herd, and by 0.47% for first heifers. protein-Milk content has not changed much, but it is still not high enough. Over the past five years, there has been an increase in the variability of the main selectible trait – milk yield for both the first and third lactation. The selection boundaries for such an important quality indicator of milk as protein content have been slightly expanded. Coefficient of variability in protein content. The negative impact of milk yield on the level of fat content of the herd over the past more than 15 years has naturally changed from an average negative to an average positive in first-heifers, and in full-aged cows it has decreased from -0.17 to -0.08. The dependence of milk yield after the third calving on the results of the first lactation has decreased, but it is still quite significant, as evidenced by the corresponding correlation coefficient of 0.28. The increase in the correlation coefficient between the milk yield of mothers and daughters has almost doubled in ten years.

show abstract

Dynamics of milk productivity and service period by lactation in cows of different lines

Горелик

2022

Agrarian Bulletin of The

View full text Add to dashboard Cite

Abstract. The purpose is to study the dynamics of milk productivity and service period of Holstein black-and-white cattle by lactation, depending on origin. Methods. Milk productivity was assessed by the method of control milking, milk quality indicators – by the instrument method on the Lactan-1M device, reproductive qualities – by conventional methods. Results. The breeding farms breed animals that belong to the following genealogical lines: Vis Back Ideal, Reflection Sovering, Montwick Chieftain, Pabst Governor and Siling Trijun Rockit. The main livestock is represented by 3 lines. Most of the cows belong to the Vis Back Idial line – 55 % of the total livestock of more than 11.5 thousand heads, of which 61.51 % for the 1st and 2nd lactation. The dynamics of changes in milk yield during lactation confirms a well-known pattern, increasing to full-age 4th lactation. The greatest significant increase was found on the 2nd relative to the 1st (P ≤ 0.01). From the 5th lactation, milk yield gradually decreases by 9.4–9.8 % for each subsequent lactation. The effect of the duration of the service period on milk productivity has not been established. KVS is 0.86 on average for livestock, which allows us to conclude about certain problems with reproduction in cows of this line. The productive longevity of cows of this line is 2.36 lactation. The group of cows of the Reflection Sovering line includes 31.5 % of the total number of dairy cows with a share of young cows of 70.1 %. The duration of productive use is lower and amounts to 1.95 lactation, and the coefficient of reproductive ability varied depending on lactation from 0.88 to 0.93, reaching a maximum of 0.96–0.98 in the 9th and 10th lactation. The longest duration of productive longevity was established in the group of cows belonging to the Siling Trijun Rokita line, which are used for 5.6 lactation, more than 41 tons of milk were obtained from them, but lower productivity indicators were revealed. In general, there is an increase in milk yield in livestock, which leads to a decrease in productive longevity. Materials of breeding and zootechnical accounting of the Selex database, breeding cards of cows were used for research. The scientific novelty of the work lies in the fact that the influence of origin on productive longevity has been proven, which allows through breeding work to have a positive effect on increasing the duration of productive use.

show abstract

Analysis of breed and class composition cattle of the ural region

Cited by 13 publications

References 0 publications

Dynamics of variation of dairy characteristics in cows when using the feed additive “VivAktiv”

Dynamics of variation of dairy characteristics in cows when using the feed additive “VivAktiv”

Breeding parameters of the main economically useful traits of milk productivity of black-and-white Ural type cows

Dynamics of milk productivity and service period by lactation in cows of different lines

Contact Info

Product

Resources

About