scholarly journals Stress tolerance and productive longevity of cows with intensive milk production technologies

2021 ◽  
Vol 282 ◽  
pp. 02006
Author(s):  
I.M. Donnik ◽  
O.G. Loretts ◽  
O.S. Chechenikhina
Keyword(s):  
Stress Tolerance ◽  
Milk Production ◽  
Adrenocorticotropic Hormone ◽  
High Type ◽  
Black And White ◽  
Breed Type ◽  
Production Technologies ◽  
White Cattle ◽  
Robotic Milking

The studies were carried out on black-and-white cattle of the Ural intra-breed type, bred at the enterprises of the Sverdlovsk region. The studied groups of animals are formed depending on the milking technology (milking in a milk pipe, in milking parlors, robotic milking). The level of hormones in the groups of cows, where intensive milking technologies were used, is higher than in the groups of linear milking in the milk pipeline: prolactin by 17.2 ng / ml; adrenocorticotropic hormone by 10.3 pg / ml; cortisol by 5.3 nmol / l. The number of heifers with a high type of stress tolerance is on average 6.3% less in groups where intensive milking technologies were used in comparison with linear milking in a milk pipe.

scholarly journals BILATERAL OVULATIONS FOR THE DAIRY BREEDS: DIAGNOSTICS, PREVALENCE, PRACTICAL VALUE

2017 ◽  
Vol 54 ◽  
pp. 169-177
Author(s):  
S. O. Sidashova ◽  
S. I. Kovtun
Keyword(s):  
Milk Production ◽  
Diagnostic Method ◽  
Follicular Phase ◽  
Sexual Cycle ◽  
Biological Value ◽  
Black And White ◽  
Production Technologies ◽  
White Cattle ◽  
Cattle Reproduction ◽  
First Time

Results of monitoring research of morphological features of ovaries of cows of dairy breeds in 0th day of a follicular phase of a sexual cycle are presented. By differential manual technic diagnostic method one significantly established that the frequency of cases of bilateral ovulations of follicles is influenced by the level of milk production: amongst cows, that have milk production lower, than 5 thousand, this phenomenon was found in 12,88% of cycles, and among highly productive cows (6 000–10 000 kg) – only in 4,34% of cases. Significantly more frequent prevalence of bilateral ovulations was found amongst thoroughbred cows (7,34% of cycles) in comparison with local cattle (0,82% of cycles). Genetic influence on the frequency of bilateral ovulations is significantly established by the statistical analysis of data: amongst cows of red and red-and-white breeds – 10,96% of cycles were with bilateral ovulations, and amongst black-and-white cattle, respectively – 6,57%. For the first time the biological value of bilateralism of development of the dominating cow follicles is experimentally established. Among females with double ovulations after insemination the pregnancy was fixed by 1,5–6,4 times more often, than among cows with single ovulations (respectively, for the herds of Ukrainian Red Dairy and Ayrshire breeds). Pair gonads of cows are key bodies in dairy cattle reproduction, therefore studying of ovary morphogenesis and identification of biological resources of reproduction are important tasks in herd reproduction problem solving under the conditions of industrial milk production technologies.

The improvement of the type Karatomar of Black-and-White cattle breed under the conditions of Northern Kazakhstan

2020 ◽  
pp. 23-31
Author(s):  
L. Ovchinnikova ◽  
E. Babich
Keyword(s):  
Research Work ◽  
Cattle Breed ◽  
Reproductive Traits ◽  
Farm Animals ◽  
Development Indicators ◽  
Black And White ◽  
Breed Type ◽  
Northern Kazakhstan ◽  
White Breed ◽  
White Cattle

In the Republic of Kazakhstan over the past decade positive changes have been observed in increasing the number of farm animals, increasing their productivity, and increasing the gross production of milk, meat and other products. At the same time the development of dairy cattle breeding is mainly due to the breeding of Black-and-White, Red Steppe, Simmental breeds and their intra-breed types as well as imported from abroad Holstein breed. The purpose of the research was to analyze ways to improve the intra-breed type Karatomar of Black-and-White breed in Northern Kazakhstan. Research work has been carried out on breeding animals such as Karatomar type cattle of Black-and-White breed in LLP “Experimental farm Zarechnoe” in the Kostanay district in the Kostanay region. The dynamics of growth and development indicators, reproductive traits of heifers of a new intra-breed type Karatomar of Black-and-White cattle have been studied. A comprehensive assessment of their economically useful traits in the first lactation, determined by the resistance of animals to climatic and forage conditions, the efficiency of breeding of animals of different genotypes has been conducted. It has been found that the replacement heifers – daughters of American breeding sires inherited precocity and showed higher growth energy after 6 months of age and continued to grow rapidly until 18 months. The advantage in metabolism was in the daughters of Holstein sires of the American selection Orbit 4078, and the increased immune status of the organism in the daughters of the sire of the domestic selection Yamal 975 as the most adapted to the conditions of Northern Kazakhstan. The best ability to increasing the milk yield, stable lactation activity, high milk productivity, gross content of dry matter and nonfat milk solids have been characterized by the daughters of sires of the American selection Orbit 4078 and Lowrider 4129. Analysis of economic indicators of milk production has been shown that from cows – daughters of sires Orbit 4078 and Lowrider 4129 for 305 days of lactation received 15,8 and 15,2 % more milk of base fat, the expenditures of EFU per 1 kg of production was lower by 10,2 and 5,9 %. A higher level of profitability has been observed in the group of daughters of the sires Orbit 4078 – 35,5 % and Lowrider 4129 – 33,1 %, which was 8,5 and 10,8 % higher than in the group of daughters of the sire Yamal 975.

Evaluation the prospects of related groups of black-and-white cattle in breeding farms of the republic of Udmurtiya

10.12737/6536 ◽  
2014 ◽  
Vol 9 (3) ◽  
pp. 104-106
Author(s):  
Азимова ◽  
Glafira Azimova
Keyword(s):  
Protein Content ◽  
Correlation Coefficient ◽  
Milk Production ◽  
Coefficient Of Variation ◽  
Milk Productivity ◽  
Agricultural Producers ◽  
Black And White ◽  
White Cattle ◽  
The Republic ◽  
Breeding Farms

groups Gannoverhill Starbak 352790 - 3.13% and Blekstar 1929410 - 3.10%. Minimum index of protein content was in cows of Svit Haven Tradition 1682485 line and Vis Bek Ideald 1013415 - 3.04%. The coefficient of variation of protein content The article assesses the milk production of cows of different related groups of black-and-white cattle in breeding farms of the Republic of Udmuritya. We investigated the milk productivity of cows of different related groups in the last completed lactation. These studies were conducted in JSC “Uchkhoz Iyulskoe of Izhevsk State Agricultural Academy” of Votkinsk region, in agricultural producers cooperative “Kolos” of Vavozh district, in the agricultural producers cooperative named after “Michurin” of Balezino region of the Republic of Udmuritya. The data from the program “Seleks” was used to study the linear supplies and milk production. The maximum fat content observed in related groups Paklamar Astronavt 1458744, Valiant 165414, Osborndeyl Ayvengo 1189870 - 3.97%; 3.94%; 3.92% respectively. The coefficient of variation of this trait is 6.8-11.3%. The protein content at last completed lactation was characterized by low rates in all related groups. The best result was in cows of two related was light, and it ranges from 2.9 to 3.5%. It should be noted, that there was a slight negative correlation between the milk productivity and protein content, the correlation coefficient was 0.01 to 0.11. The conjugacy of the fat content in milk - the protein content of milk – is negative, the correlation coefficient ranges from - 0.18 to -0.36.

scholarly journals Associations between <i>Leu/Val</i> polymorphism of growth hormone gene and milk production traits in Black-and-White cattle

2002 ◽  
Vol 45 (5) ◽  
pp. 421-428 ◽  
Author(s):  
A. Dybus
Keyword(s):  
Growth Hormone ◽  
Milk Production ◽  
Milk Fat ◽  
Growth Hormone Gene ◽  
Production Traits ◽  
Milk Production Traits ◽  
Black And White ◽  
Holstein Friesian ◽  
Pcr Rflp ◽  
White Cattle

Abstract. Associations between polymorphism of the bovine growth hormone (GH) gene (Leu/Val) and milk production traits of Black-and-White cattle with different proportional share of Holstein Friesian genes were analysed. A total of 1086 cows were included in the study. PCR-RFLP method was used for genotyping. The frequencies of genotypes and alleles were as follows: 0.653 for LL genotype, 0.324 for LV and 0.023 for VV, and 0.815 for GHL and 0.185 for GHV. Associations between Leu/Val polymorphism and milk production traits of cows were found only in first lactation. Cows with LL genotype had higher milk, fat and protein yield compared to LV individuals (P ≤ 0.01).

scholarly journals Milk productivity and reproductive performance of black and white cows, depending on the technology of milk production

2021 ◽  
Vol 204 (01) ◽  
pp. 51-59
Author(s):  
Kristina Nazarova ◽  
G. Berezkina
Keyword(s):  
Milk Production ◽  
Physiological State ◽  
Collective Farm ◽  
Milk Productivity ◽  
Black And White ◽  
Udmurt Republic ◽  
Robotic Milking ◽  
The Republic ◽  
The Impact ◽  
Modern Technologies

Abstract. Milking cows is the final stage, which determines the effectiveness of milk production with all other issues resolved. The number of dairy farms equipped with modern milking machines is growing in the republic. Simultaneously with the increase in milk productivity of cows, the task is to use the least labor-intensive and energy-intensive technologies for milk production. At the same time, the health and tranquility of cows is a prerequisite for this, it is necessary to use modern technologies. The purpose is to study the impact of milking technology on the level of milk productivity, milk quality and reproductive indicators of cows. The object of the study is cows of black-and-pesky breed in the leading tribal farms of the Vavozhskiy district of the Udmurt Republic – collective farm (APC) named after Michurin and APC collective farm “Kolos”. Methods. Three groups of cows were formed using the pair-analog method: 1st group – loose-box keeping of cows using a robotic milking system, 2nd – loose-box keeping using milking machines “Evroparallel”, 3rd – loose-box keeping using the technology of milking cows through the milking parlor “Кarusel”. Results. Thus, in case of careless-box content and use of robotic milking plant, cows of black and pesky breeds outnumbered cows, which were fed using “Evroparallel” plant and milking technology with the help of milking hall “Кarusel” on all indicators of dairy productivity investigated by us (except for content of mass fraction of protein in milk) and reproduction qualities. Scientific novelty. Milking machines of outdated designs do not quite meet the physiological state of the animals, which leads to the loss of milk, premature start of cows and the incidence of mastitis. Thus, in the Udmurt Republic, new farms and complexes are being built, which are equipped with modern automated milking equipment, which excludes direct human participation in the process of obtaining milk, thereby increasing the quality and quantity of milk.

scholarly journals <i>GHRH/Hae</i>III gene polymorphism and its associations with milk production traits in Polish Black-and-White cattle (short communication)

2006 ◽  
Vol 49 (5) ◽  
pp. 434-438 ◽  
Author(s):  
A. Dybus ◽  
W. Grzesiak
Keyword(s):  
Gene Polymorphism ◽  
Milk Production ◽  
Short Communication ◽  
Production Traits ◽  
Milk Production Traits ◽  
Black And White ◽  
Pcr Rflp ◽  
White Cattle ◽  
The Relationship

Abstract. The objective of this paper was to evaluate the relationship between the polymorphism of the GHRH and milk production traits of Polish Black-and-White. A total of 881 cows were included in the study. A PCR-RFLP method was used to genotyping. The frequencies of the genotypes and alleles were as follows: 0.0545 for AA, 0.3133 for AB and 0.6322 for BB, and 0.2111 for GHRHA and 0.7889 – GHRHB. There were no significant associations between GHRH/HaeIII polymorphism and milk production traits of the analysed cows.

scholarly journals Association of genetic variants of bovine <i>prolactin</i> with milk production traits of Black-and-White and Jersey cattle

2005 ◽  
Vol 48 (2) ◽  
pp. 149-156 ◽  
Author(s):  
A. Dybus ◽  
W. Grzesiak ◽  
H. Kamieniecki ◽  
I. Szatkowska ◽  
Z. Sobek ◽  
...  
Keyword(s):  
Milk Production ◽  
Production Traits ◽  
Milk Production Traits ◽  
Black And White ◽  
Jersey Cattle ◽  
Prolactin Gene ◽  
Pcr Rflp ◽  
Rsai Polymorphism ◽  
White Cattle ◽  
Jersey Cows

Abstract. Associations between polymorphism localised in the third exon of the prolactin gene (PRL-RsaI) and milk xproduction traits of Black-and-White and Jersey cattle were analysed. A total of 427 cows were included in the study. PCR-RFLP method was used. The frequencies of genotypes and alleles were as follows: 0.7107 – AA, 0.2851 – AB, 0.0042 – BB; 0.8533 – PRLA and 0.1467 – PRLB for Black-and-White cattle and 0.0919 – AA, 0.4324 – AB, 0.4757 – BB; 0.3081 – PRLA and 0.6919 – PRLB for Jersey cattle. Statistically significant differences between the breeds were observed in the frequencies of genotypes and alleles. Associations between PRL-RsaI polymorphism and milk production traits of Jersey cows and lack of associations with these traits in Black-and-White cows were observed.

scholarly journals Assessment of the type of stress tolerance mother cows and their descendants

2020 ◽  
Vol 201 (10) ◽  
pp. 43-49
Author(s):  
Irina Donnik ◽  
Ol'ga Loretc ◽  
Ol'ga Chechenihina ◽  
Ol'ga Bykova ◽  
Aleksey Stepanov
Keyword(s):  
Stress Tolerance ◽  
Milk Production ◽  
Stress Resistance ◽  
Dairy Herd ◽  
Stress Factors ◽  
Tolerance Index ◽  
Body Type ◽  
High Type ◽  
Average Value ◽  
The Impact

Abstract. Resistance to stress in cows depends on factors such as age, gender, fatness, body type and heredity. The effects of long-term stress factors on the dairy herd cause hard-to-recover damage during production. The purpose of our research was to assess the types of stress resistance of mother cows and their offspring. Methods. The stress tolerance index of the studied animals was calculated according to the method of N. A. Safiullin and others. This method includes the impact on animals during machine milking of a stress factor and changes in milk production indicators, determining the stress resistance indicator of cows by the average value of the sum of estimated indicators: the ratio of 1 % milk, changes in the intensity and completeness of milk production, the duration of the latent milking period. Results. It was found that the most stress-resistant animals were less productive (8000 kg and less for maximum lactation). The stress tolerance index in the mother cows of this group is on average 0.137 (p < 0.001) higher than in other animals evaluated. At the same time, their descendants also had a stress tolerance index higher than in other evaluated groups by an average of 0.041 (p < 0.01). A high type of stress tolerance was determined in 75.0 % of heads in the group of cows-mothers with the lowest productivity for maximum lactation. Slightly less animals with a high type of stress resistance in the group of their descendants – 33.0 % of heads. At the same time, in these groups of mothers and daughters, cows with a low type of stress resistance were not found at all. Repeatability coefficients indicate that in low-yielding mother cows, the stress tolerance index is repeated in groups of daughter cows to a much lesser extent (at r = 0.26) compared to groups of high-yielding cows. The scientific novelty lies in the fact that the indicators of stress resistance of cows and their offspring are established depending on the highest productivity of mothers.

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