SERVICE PERIOD AND MILK PRODUCTIVITY OF COWS OF DIFFERENT GENOTYPES CSN3 AND DGAT1

2018 ◽  
Vol 234 (2) ◽  
pp. 67-73
Author(s):  
A.S. Ganiev ◽  
◽  
F.S. Sibagatullin ◽  
R.R. Shaydullin ◽  
T.H. Faizov ◽  
...  
Keyword(s):  
Milk Productivity ◽  
Service Period

scholarly journals Influence of reproductive qualities on dairy productivity of cows of the Simmental breed

2021 ◽  
Vol 285 ◽  
pp. 04005
Author(s):  
Maria Grinchuk ◽  
Yulia Nesterova
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Mass Fraction ◽  
Milk Protein ◽  
Production Performance ◽  
Dry Period ◽  
Milk Productivity ◽  
Service Period ◽  
Positive Effect ◽  
Different Levels

The aim of work is to explore influence of first fruitful insemination, service period and dry period to dairy productivity of Simmental cows. The research is aimed at studying the milk production of Simmental cows with different levels of reproductive qualities. The result of the research, a relation was established between the age of the first fruitful insemination, the duration of the service period, the duration of the dry period and milk production performance. It has been established that the age of the first fruitful insemination at 18-24 months has the most beneficial effect on subsequent milk production. The service period of 90-120 days has a positive effect to an increase in milk yield per 305 days of lactation, the longer service period negatively affects to the mass fraction of fat. With an increase in the duration of the dry period, the mass fraction of fat increases, but milk yield decreases. The influence of reproductive qualities to the milk protein is negligible. It was revealed that the age of the first insemination at 18-24 months is the most profitable for production. According to the results of the research, it can be judged that reproductive qualities, in combination with other factors, affect the milk productivity of Simmental cows.

scholarly journals Reproductive qualities of dairy cows at different levels of milk yield

2021 ◽  
Vol 22 (4) ◽  
pp. 589-596
Author(s):  
Svetlana V. Titova
Keyword(s):  
Milk Yield ◽  
Correlation Coefficients ◽  
Comparison Method ◽  
Reproductive Capacity ◽  
Calving Interval ◽  
Milk Productivity ◽  
Reproductive Ability ◽  
Service Period ◽  
The Impact ◽  
Different Levels

The article presents the results of the analysis of the reproductive ability of cows depending on the level of their milk productivity. The studies were conducted in the Republic of Mari El on cows of the Holstein black-and-white breed (n = 3828). There have been studied the influence of different levels of milk yield on the duration of the service period and period between calvings, the output of calves per 100 cows, the coefficient of reproductive ability. The studies used the comparison method, correlation, regression and one-factor analysis of variance. It has been established that the milk yield increases with the age of cows, but at the same time the duration of the service period and calving interval increases. In first-calf cows, the service period was 128.8 days (Cv = 75.1 %), the calving interval was 403.6 days (Cv = 23.5 %). By the third lactation, with an increase in milk yield by 1030 kg (15.4 %), the duration of the service period increased by 7.2 days (5.6 %), the calving interval  -by 12.3 days (3.0 %). The share of the impact (ƞ2x) of milk yield on the duration of the service period was 5.4 %, the calving interval -4.7 %. The correlation coefficients between milk yield for 305 days of the first lactation and the duration of the service period and calving interval were 0.24 and 0.22 (p<0.05), with milk yield for the entire lactation 0.81 (p<0.05). The optimal indicators of the service period (89.4 days), the calving interval (369.4 days), the reproductive capacity (0.94) and the output of calves (1.0) were possessed by the first heifers with low milk productivity-milk yield less than 5000 kg of milk. In animals with the milk yield of 6000-9000 kg of milk or more, the duration of the service period was 12.4-249.6 % higher, the calving interval -by 1.9-32.5 % (p<0.05). According to the regression coefficients, on average, each increase in milk yield per 1000 kg increased the duration of the service period by 25.9 days, the calving interval -by 23.1 days, which worsened the output of calves by 0.24 %, and the coefficient of reproductive ability decreased by 16.0 %.

scholarly journals Reproductive qualities and milk productivity of black-and-white cows depending on sire lineage

2020 ◽  
Vol 50 (5) ◽  
pp. 47-55
Author(s):  
S. L. Belozertseva ◽  
L. L. Petrukhina
Keyword(s):  
Milk Yield ◽  
Research Work ◽  
Live Weight ◽  
Reproductive Capacity ◽  
Calving Interval ◽  
Milk Productivity ◽  
Black And White ◽  
Service Period ◽  
Significant Difference

The paper presents the results of studying the effect of sire lineage on reproductive qualities and milk yield of cows. The study was carried out inIrkutskregion on a herd of Holsteinized black-andwhite cattle of Pribaikalsky type. The analysis of the main characteristics of reproductive capacity of herd cows on a farm was performed during 2013–2018. The material of the research work was based on the informational database of animals from the program of breeding register Selex. Cows were divided according to sire lineage and milk productivity into five groups by the level of milk yield: from 5000 to6500 kg, 6501-8000, 8001-9500, 9501-11000 and more than11001 kg. Successful insemination of heifers took place at the age of 15.7-16.6 months with the live weight of more than400 kg, which corresponds to zootechnical standards. The earliest (15.7 months) insemination was in heifers of Reflection Sovereign sire line, the age of first calving was 753 days with the live weight of561 kg. The latest (498 days) successful insemination was observed in heifers of Montvik Chieftain bull line with the live weight of498 kg. Cows of Sealing Trygen Rocket (8766 kg) and Reflection Sovereign (8704 kg) sire lines had the highest milk productivity with a significant difference (p ≥ 0.90). The cows of these lines had the longest service period (164 and 179 days), as well as the length of the calving interval (445 and 458 days), respectively. The coefficient of reproductive capacity of cows of different sire lines ranged from 0.80 to 0.88, which is a low indicator.

scholarly journals Reproductive ability and milk productivity of cows depending on breeding value of their progenitors

2017 ◽  
Vol 19 (74) ◽  
pp. 48-51
Author(s):  
L. V. Ferenz
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Live Weight ◽  
Breeding Value ◽  
Milk Productivity ◽  
The Third ◽  
Reproductive Ability ◽  
Service Period ◽  
Significant Difference ◽  
The Difference

The influence of bullock`s different breeding value for reproductive ability and milk production of their  daughters were investigated. Established that the age of first productive insemination of heifers Ukrainian black spotted milk breed, was 17.5–18.6 months and age of first calving – 26.6–27.8 months. Heifers` live weight at the first insemination was 361.4–407.1 kg. During first lactation the highest productivity had daughters from parents with breeding value by milk yield more than 801 kg. In the first lactation wasn’t found significant difference in duration service-period and interparturition-period for cows derived from progenitors with different breeding value. In the second lactation best indexes in duration service-period and interparturition-period for cows derived from progenitors with breeding value by milk yield 601–800 kg and more than 801 kg. In the third, the highest lactation, these indexes were best for cows derived from progenitors with breeding value by milk yield 601–800 kg. The difference in milk yield during first lactation between heifers received from progenitors with breeding value by milk yield less than 200 kg and heifers from bullock`s  with breeding value 401–600 kg was 292 kg. The difference in milk yield between heifers received from progenitors with breeding value by milk yield less than 200 kg and heifers from bullock`s  with breeding value  with breeding value 601–800 kg  was 660.3 kg. The difference in milk yield between heifers received from progenitors with breeding value by milk yield less than 200 kg and heifers from bullock`s  with breeding value more than 801 kg was  920.8 kg In the second lactation this difference was 589.8 (Р < 0.001), 841.5 (Р < 0.001) і 894.4 (Р < 0.001) kg of milk, in the third, the highest lactation – 754.5 (Р < 0.001), 951.8 (Р < 0.001) і 1335.7 кг (Р < 0.001).

scholarly journals The Productivity of the Holstein Cows in the Process of Adaptation to the Conditions of the Iindustrial Complex of the Yaroslavl Region

2020 ◽  
Author(s):  
О.В. Филинская ◽  
М.Ю. Лапина ◽  
С.В. Зырянова
Keyword(s):  
Milk Yield ◽  
Fat Content ◽  
Dry Period ◽  
Milk Productivity ◽  
Mothers And Daughters ◽  
The Third ◽  
Reproductive Ability ◽  
Service Period ◽  
Industrial Complexes ◽  
Selection Of

Исследования проводились на одном из промышленных комплексов Ярославской области. Целью исследований являлась оценка по основным признакам продуктивности импортного скота голштинской породы селекции Нидерландов и их дочерей. Было установлено, что как матери, так и дочери имели удлинённую лактацию. Коровы импортной селекции имели высокую молочную продуктивность с первой лактации, которая составила 5597 кг с МДЖ и МДБ 4,23 и 3,38% соответственно, к третьей лактации удои увеличились до 6611,8 кг, МДЖ составила 4,35%, МДБ – 3,37%. Дочери достоверно превосходили своих матерей по продуктивным признакам, за исключением содержания белка по первой лактации, жира и белка – по третьей лактации. На комплексе и матери, и дочери имели удовлетворительную воспроизводительную способность. Выше принятых норм были продолжительность сервис-периода, сухостойного периода, возраст первого осеменения. При этом у дочерей сервис-период был меньше на 60,3 дня. Увеличение удоя является положительным показателем адаптации, с другой стороны, удовлетворительные показатели воспроизводства указывают на трудности адаптации импортного скота. Реализация продуктивных признаков имеет важное значение при ведении селекционной работы со стадом. При определении корреляции дочерей с матерями и генетического влияния наследуемости признаков от матерей была установлена корреляция по первой и третьей лактациям, соответственно: по удою – слабая отрицательная и слабая положительная, по содержанию жира в молоке – невысокая положительная, слабая отрицательная, по содержанию белка – положительная и отрицательная; наследуемость удоя, МДЖ и МДБ составила 45,1–48,3%, по третьей лактации наследуемость содержания жира от матерей – всего 12,4%. Основными причинами выбытия как матерей, так и дочерей послужили проблемы с воспроизводством, болезни конечностей и вымени. Меньше всего коровы выбывали из-за низкой продуктивности. Средний возраст использования матерей составил 1,6 лактации, у дочерей – 1,8. The researches were carried out at one of the industrial complexes of the Yaroslavl region. The aim of the research was to evaluate of imported Holstein cattle of the selection of the Netherlands and their daughters by the main characteristics of the productivity. It was found that both mothers and daughters had elongated lactation. Cows of imported selection had high milk productivity from the first lactation which was 5597 kg with WCF and WCP 4.23 and 3.38% respectively, by the third lactation milk yield increased to 6611.8 kg, WCF was 4.35%, WCP – 3.37%. The daughters were significantly superior to their mothers in productive features, with the exception of protein for the first lactation, fat and protein for the third lactation. In the complex both mothers and daughters had satisfactory reproductive ability. The duration of the service period, the dry period and the age of the first insemination were higher than the accepted norms. At the same time the service period for the daughters was 60.3 days less. The increase in milk yield is a positive indicator of adaptation on the other hand satisfactory reproduction rates indicate difficulties in adapting imported livestock. The realization of productive characteristics is important when conducting breeding work with a herd. When determining the correlation of daughters with mothers and the genetic influence of the heritability of signs from mothers, a correlation was established for the first and third lactations, respectively: by the milk yield – meanly negative and meanly positive, by fat content in milk – low positive, meanly negative, for protein content – positive and negative; the heritability of milk yield, WCF and WCP were 45.1–48.3%, according to the third lactation the heritability of fat content from mothers was only 12.4%. The main reasons for cow disposal of both mothers and daughters were problems with reproduction, diseases of the limbs and udders. Least of all cows were culled due to low productivity. The average age of use of mothers was 1.6 lactation, for daughters – 1.8.

scholarly journals The impact of reproductive capacity indicators of simmental cattle on their milk productivity

2017 ◽  
Vol 19 (74) ◽  
pp. 52-56
Author(s):  
V. V. Fedorovych
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
Correlation Coefficients ◽  
Reproductive Capacity ◽  
Optimal Parameters ◽  
Milk Productivity ◽  
Service Period ◽  
Simmental Cattle ◽  
The Impact

It is well known with an increase of milk productivity of cows their reproductive capacity in general became worse. Therefore, it is important to establish optimal parameters of the first age insemination and first calving, duration of service- and inter-calving periods. In view of the above, the purpose of our researches was to study the influence of reproductive capacity parameters of Simmental cows on the formation of milk productivity. The study were conducted on 331 cows in agricultural LLC «Litynskyy» Drohobych raion, Lviv oblast. Evaluation of milk productivity and reproductive capacity of the animals (in 20 years) were performed according to the data of zootechnical accounting for the first, second, third and the best lactations. The differences in rates of milk productivity depending on the parameters of their reproductive capacity were established. Animals with age of first fruitful insemination 18.1–20.0, with first calving age – 27.1–29.0, duration of service period – 101–120 and duration of the inter-calving period – 381–400 days had the best yields and the highest quantity of milk fat. According to the above mentioned indicators of milk productivity they are likely dominated by animals with bigger or smaller indicators of reproductive capacity, but in most cases, this advantage was unreliable. It was found positive highly significant links between indicators of reproductive capacity of cows and milk yield. The highest correlation coefficients were observed between age of first calving and their milk yields, depending on lactation, they were 0.380–0.498, lower – between age of first insemination and milk yield – 0.316–0.456 and the lowest – between service- and inter-calving periods and yield – 0.124–0.335; 0.127–0.331 respectively. The impact of the abovementioned indicators on yield was within 23.13–39.88; 28.63–45.02; 30.98–35.17%, respectively. 

ВЛИЯНИЕ ГЕНОТИПА БЫКОВ НА МОЛОЧНУЮ ПРОДУКТИВНОСТЬ И ВОСПРОИЗВОДИТЕЛЬНЫЕ КАЧЕСТВА ГОЛШТИНСКИХ КОРОВ

2019 ◽  
pp. 26-28
Author(s):  
Z.S. SANOVA
Keyword(s):  
Protein Content ◽  
Milk Yield ◽  
Negative Correlation ◽  
Genetic Improvement ◽  
Fat Content ◽  
Milk Productivity ◽  
Positive Correlation ◽  
Genetic Potential ◽  
Service Period ◽  
Selection Of

Приведены результаты оценки быковпроизводителей голштинской породы по молочной продуктивности и воспроизводительным качествам их дочерей. Обработаны данные 563 первотелок и 45 быковотцов. В среднем удой дочерей за 1ю лактацию от разных отцов колебался от 6784 до 7789 кг, по содержанию жира и белка в молоке различий не выявлено. Большинство производителей обладали желательной степенью реализации генетического потенциала. Основной вклад в генетическое совершенствование стада вносят быки Altahessel Sex138929389, Altajupiter Sex 66011448 и ClearEc Altar2 62916235, достоверно увеличивая удой дочерей за 305 дней 1й лактации от 350 кг до 490 кг по сравнению со средними показателями по стаду. Уровень раздоя коров по 1й лактации достоверно обусловливает их дальнейшую продуктивность. У дочерей ClearEc Altar2 отмечена положительная корреляция (0,44) между удоем и белком, а у дочерей Бодо 354239752 (r0,68) между жиром и белком. Отмечены дочери с отрицательной коррелятивной связью между удоем и жиром, это свидетельствует о том, что в этих группах с высокой молочной продуктивностью отбор коров по жирномолочности не обеспечивает повышение белковомолочности. Самый короткий сервиспериод (98 дней) характерен для дочерей Магикон 536522893, наиболее длинный у дочерей Dinom Altatyson 66133528 и Short Cut 3504510619. Используемые быкипроизводители в хозяйстве реализуют свой потенциал в более сжатые сроки, что необходимо учитывать при дальнейшем их закреплении.The results of estimation of Holstein sires based on milk productivity and reproductive qualities of their daughters are presented .The findings of 563 heifers and 45 bullsfathers were processed.on average, the milk yield of daughters for 1 lactation from different fathers ranged from 6784 to 7789 kg, theee were not found any differences in the content of fat and protein in milk.most producers had a desirable degree of realization of genetic potential. Bulls Altahessel Sex138929389, Altajupiter Sex 66011448 and ClearEc Altar2 62916235mainly contribut to the genetic improvement of the herd, significantly increasing yield of daughters in 305 days of the first lactation from 350 kg to 490 kg compared to the average for the herd. The level of milking cows on the 1st lactation reliably determines their further productivity. Daughters of ClearEc Altar2 had a positive correlation (0.44) between milk yield and protein, and daughters of Bodo bull 354239752 (r0.68) between fat and protein. Daughters with a negative correlation between milk yield and fat were noted, this indicates that the selection of cows by fat content does not provide an increase in protein content in these groups with high milk productivity. The shortest service period (98 days) are typical for daughters of Magikon 536522893, the longest the daughters Dinom Altatyson 66133528 and Short Cut 3504510619.sires, used in farming, realize their potential in a shorter time, which should be taken into account in their further consolidation.

scholarly journals Influence of biopreparations on the postnatal period of highly productive cows

2021 ◽  
Vol 935 (1) ◽  
pp. 012041
Author(s):  
V G Semenov ◽  
E P Simurzina ◽  
S G Kondruchina ◽  
V G Tyurin ◽  
A F Kuznetsov ◽  
...  
Keyword(s):  
Effective Means ◽  
Blood Parameters ◽  
Postnatal Period ◽  
Control Group ◽  
Milk Productivity ◽  
Service Period ◽  
Group 3 ◽  
Group 2 ◽  
Positive Effect ◽  
Group 1

Abstract The article describes the results of comparative studies on the influence of new immunostimulants on the course of postnatal recovery of the cows under conditions of intensive milk production technology. Injections of PS-2 (group 1) and Prevention-N-E (group 2) at a dose of 10 ml forty, twenty and ten days before calving, and a injection of PDE at a dose of 20 ml with E-Selenium of 10 ml (group 3) twenty days before calving prevent the occurrence of obstetric and gynecological pathology, improve reproductive qualities, as compared to the control group, where no biologicals were injected. This fact impacts the acceleration of the first heat onset by 13.7-21.1 days, the conception rate by 0.5-0.7 times, the service period by 16-29.9 days. A positive effect of the tested agents on metabolic processes, morphological and biochemical blood parameters, nonspecific immunological reactivity of the organism was also established. All these factors led to an increase in milk productivity for 305 days of lactation by 186-478 kg, at the same time, milk quality indicators improved correspondingly. Thus, biological preparations PS-2 and Prevention-N-E are highly effective means of preventing obstetric and gynecological pathology.

scholarly journals Rumen bacterial community, indicators of reproduction and milk productivity at different levels of protein concentrate in the diets of dairy cows

2021 ◽  
Vol 282 ◽  
pp. 03023
Author(s):  
Nikolay Buryakov ◽  
Georgi Laptev ◽  
Mariya Buryakova ◽  
Larisa Ilina ◽  
Dmitry Aleshin
Keyword(s):  
Bacterial Community ◽  
Performance Indicators ◽  
Dry Matter ◽  
Economic Conditions ◽  
Protein Concentrate ◽  
Milk Productivity ◽  
Service Period ◽  
Modern Economic ◽  
Different Levels

The use of new sources of by-pass protein in the cow diets to optimize milk production and herd reproduction performance indicators in modern economic conditions is relevant. The article presents data on the use of a protein concentrate containing plant and animal components and its effect on the quality of the milk obtained, the state of the rumen bacterial community and reproduction indicators. The use of protein concentrate of both 1.0 kg and 1.5 kg/head/day contributed to improving the quality and increasing the yield of dry matter of cow's milk by 0.17-0.43 %. During the days in milk, with the use of protein concentrate it was observed that increase the content of Selenomonas by 1.7 % and 4.1%, which cleave the urea, indicates a more efficient use of nitrogen in the diet. The inclusion of protein concentrate in the composition of daily diets helps to improve reproduction indicators, reduce the duration of the service period and the number of semen doses spent.

scholarly journals PRODUCTIVE AND REPRODUCTIVE QUALITIES OF HOLSTINIZED BLACK – AND-WHITE COWS

2021 ◽  
Vol 57 (2) ◽  
pp. 24-33
Author(s):  
D.N. Bekbaeva ◽  
◽  
B.T. Kulataev ◽  
Keyword(s):  
Live Weight ◽  
Protein Composition ◽  
Holstein Cows ◽  
Dry Period ◽  
Milk Productivity ◽  
Black And White ◽  
Service Period ◽  
White Breed ◽  
Peasant Farm ◽  
Economic Use

The article presents a comparative assessment of the milk productivity, reproductive qualities and productive longevity of Holstein cows of the black-and-white breed, depending on the first insemination of heifers and their linear affiliation. The optimal age of fertilization was established, taking into account the live weight and the duration of economic use of Holstinized black-and-white cows in the conditions of a peasant farm. A comparative analysis of the exterior of cows found that the optimal age for the first fruitful insemination of Holstein heifers of the black-and-white breed is 16-17 months, that cows with the age of the first insemination of 16-17 months to the third lactation came with higher indicators of linear evaluation. The economic efficiency of increasing milk productivity, reproductive qualities and productive longevity is determined depending on the age of the first insemination and the linear affiliation of Holstein cows of the black-and-white breed of cattle in the Almaty region. Keywords: reproduction, longevity, milk productivity, age of the first calving, insemination, live weight of cows, service period, dry period, blood oximetry, protein composition of blood serum.

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