scholarly journals DOCTOR OF AGRICULTURAL SCIENCES Yu. P. POLUPAN – REACHED CREATIVE PRICES AND PRIVACY OF SCIENCE

2019 ◽  
Vol 58 ◽  
pp. 5-18
Author(s):  
T. P. Koval ◽  
A. Ye. Pochukalin ◽  
N. L. Reznykova ◽  
H. D. Ilyashenko ◽  
O. V. Boiko
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
Agricultural Science ◽  
Educational Process ◽  
Protein Yield ◽  
Correct Selection ◽  
Sample Population ◽  
Agrarian Policy ◽  
Economic Use ◽  
Dairy Breed

Doctor of Agricultural Science, Professor, Corresponding Member of the National Academy of Agrarian Sciences of Ukraine Yuriy Polupan made a significant contribution to the development of native agricultural science, in particular in the field of breeding, genetics and breeding of agricultural animals of the late XX – early XXI centuries. His efforts laid the foundation and successfully implemented the basic principles and principles of large-scale breeding at a nationwide level of its organization. Yu. P. Polupan was not only the inspirer and author of new Ukrainian dairy breeds and types, but also was and remains the founder of basic modern methods and further directions of work with them. Taking into account above-mentioned, the relevance, practical and cognitive importance of this issue is beyond doubt. The aim of the authors is to carry out a thorough analysis of scientific and methodological developments and achievements of Yu. P. Polupan and to study their influence on modern agrarian science. The authors used historical-chronological, systematic, biographical and source-based methods. The research base covers the scientific works of a talented scientist. One of the foundations of modern breeding theory is the solution of the issues of breeding group consolidation. A wide range of unresolved issues regarding the relevance, genesis of the concept and the essence of consolidation, methods for its assessment by phenotype and genotype, needed to be addressed. Yu. P. Polupan proposed the coefficient of phenotypic consolidation. The scientist tested three variations of the above coefficient, which are based on the use of the coefficient of variability and the standard deviation for each breeding trait. The proposed coefficients have proven to be reliable and convenient for the practical selection and evaluation of different breeding groups. Yu. P. Polupan proposed methodics, that gives a broader picture of the duration and effectiveness of lifetime use of dairy cows and regulates the method of constructing a retrospective sample population for obtaining genetically correct selection estimates. Methodology, using the information on primary zootechnical records of dates of birth, calving and culling, life-time milk yield and milk fat and protein yield and the number of lactations during life provides the calculation of longevity, duration of economic use, lactating, average lifetime milk yield and milk fat and protein yield per 1 day of life, economic use and lactating and coefficients of economic use, lactation and productive use. An important methodological element is the construction of a retrospective sample population for the year of first calving (not culling!) and not later than eight years before the date of the selection analysis. The application of the proposed methodology in the studies of its author, his students and other scholars has proved its effectiveness and correctness. The scientific works of Yu. P. Polupan are also devoted to the development of theoretical and practical bases of estimation of the prepotency and breeding value of sires, prediction of dairy productivity of cows and conservation of the gene pool of farm animals. The scientific interests of the scientist also include grounding of the use of instrumental and visual methods of estimation of the exterior of animals, its ontogenetic and population-genetic laws of formation and relative correlation with the main economic useful traits. The main direction of breeding work, to which Yu. P. Polupan paid attention, is the creation of Ukrainian Red Dairy cattle breed, which until 1998 was proved as holstinized and fat milk intrabreed types, and since 2005 (Order No. 360/75 of the Ministry of Agrarian Policy and Food jointly with the Ukrainian Academy of Agrarian Sciences of Ukraine) – officially approved Ukrainian Red Dairy breed. The innerbreed structure of the Ukrainian Red Dairy breed is represented by the indicated two innerbreed types, the Crimean, Taurian, central and eastern zonal factory types, the Rigel 4939, Geneve 162939, Inganse 343514, Cavalier 1620453, Dairyman 1620274, Chief 1620273-Valiant 1620273, and Maple 1620273 (holsteinized type), Cirrus 16497, Frem 17291, Monarch 18965, Corbitz 16496, Hannibal (fat milk type) and more than 25 factory families. Typical for Yu. P. Polupan is the widespread and correct application of mathematical methods in breeding research using modern (including copyrighted) software and computer technology. In particular, his methodological recommendations for the use of programmable calculators in biometric and zootechnical calculations are one of the most cited scientific works of the author and have been used in the educational process for students of Ukrainian Agricultural Academy (now National University of Life and Environmental Sciences). A number of scientific works by Yu. P. Polupan are devoted to the study of conformational traits, resistance, hormonal status of livestock and economic issues of animal husbandry. Yuriy Pavlovich is characterized by progressive scientific thinking, constant creative search and unremitting energy of researcher. Well-known in Ukraine and far from it not only as scientist, but as well as breeder and Methodist with new creative thinking, Yurii Pavlovich Polupan is able honourably present headed by him institution in Ministry of Education, Agrarian Policy, European Union and FAO.

scholarly journals Duration and effectiveness of lifelong use of cows according to their milk yield for first and better lactation

2017 ◽  
Vol 19 (74) ◽  
Author(s):  
Y. V. Poslavska ◽  
Y. I. Fedorovych ◽  
P. V. Bodnar
Keyword(s):  
Life Expectancy ◽  
Correlation Analysis ◽  
Milk Yield ◽  
Milk Fat ◽  
Correlation Coefficients ◽  
Fat Content ◽  
The Impact ◽  
Economic Use ◽  
Dairy Breed ◽  
Different Levels

The aim of research was to study the duration the effectiveness and lifelong use of Ukrainian Black-Spotted dairy breed cows and the impact on these indicators of milk yield for the first and best of lactation. Research was carried out in Ltd. «Milk River» Sokal district, Lviv region. It is established, that the highly indices of life expectancy, productive use, lactation, number of lactations for life and the coefficient of economic use there were cows, milk yield for the first lactation of which was 3501–4000, for the best – 5001–5500 kg, but for the lifelong yields and the amount of milk fat – with the milk yield for the first lactation 4001–4500,  for better – more than 6000 kg. Better by yields and the number of butterfat on one day of life, productive use and lactation were cows with milk yield for the first lactation of over 5500 kg, and for better – more than 6000 kg. Thanks to the correlation analysis is set different levels and the direction of indicators duration communication and the efficiency and lifetime use of experimental cows with their milk yield for the first lactation. The highest positive and significant correlation coefficients have been established between the animals yields for the first lactation and their yields (0.426–0.812) and the amount of milk  fat  (0.445–0.811) for a day of life, productive use and lactation. Negative, but probable links were between milk yield of cows for the first lactation and the duration of their life, productive use, lactation, number of lactations in life, the coefficient economic use. The greatest influence of cows yield for the first lactation had their yield and the amount of milk fat for a day of productive use (61.89 and 62.47% respectively) and lactation (54.97 and 56.44%) and the lowest – in a lifelong yield (2.01%) and the lifelong number of milk fat (1.97%). The largest predicted value had the links between the yields for the best lactation of cows and their lifelong milk yield, lifelong number of milk fat, yields and the amount of milk fat for a day of life and productive use and lactation. These links in all cases were close, highly reliable and were in the range 0.598–0.911. The lowest correlation coefficient, in addition improbable and negative, was observed between milk yield of cows for the best lactation and average fat content in milk for all lactation (-0.008). Significant influence of better lactation on the above mentioned indicators are confirmed by our calculation the indicators of influence power, which ranged from 39.53 to 77.68%. The lowest power of influence of this factor was observed in the average fat content in milk for all investigated lactation (1.02%).

THE FORMATION OF FACTORY FAMILIES OF UKRAINIAN BROWN DAIRY BREED

2017 ◽  
Vol 54 ◽  
pp. 106-112
Author(s):  
Y. I. Sklyarenko ◽  
T. O. Chernyavska ◽  
L. V. Bondarchuk ◽  
I. P. Ivankova
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Milk Fat ◽  
Statistical Processing ◽  
State Enterprise ◽  
Average Lifetime ◽  
Milk Productivity ◽  
Average Value ◽  
Economic Use ◽  
Dairy Breed

The aim of the research was to study milk production of many factory families of Ukrainian Brown dairy breed and study the influence of origin on the indices of milk yield, duration and effectiveness of lifetime use of cows. Method. For research allocated 9 factory families of Ukrainian Brown dairy breed of State Enterprise «Experimental Farm of Institute of Agriculture of Northern East of NAAS» (Valuty 413, Voli 8369, Laymy 8221, Miry 7209, Ryabuhy 9728, Sujety 6091, Tochky 8169, Chubarochky 7743, Shchepky 4344). Among the indicators of the duration and effectiveness of lifetime use of cows was determined the duration (days) of life, economic use of and of lactation, number of lactations for life, lifetime milk yield and yield of milk fat (kg) average lifetime content (%) fat in milk, milk yield (kg) per day of life, economic use and lactation. The coefficient of economic use was calculated (expression in percent) by the proposed method by Pelehaty M. S. et al. In addition were determined (also in percentage) coefficient of lactation and the coefficient of productive use offered by Polupan Y. P. Milk productivity of the animals was evaluated according to the materials of the primary zoo-technical account. Statistical processing of results of studies was conducted by methods of mathematical statistics using the PC. The results of the research. By analyzing the productivity of cows managed to identify a significant level of specificity and differentiation of families according to the indications. Of the 90 cows accounted for the highest productivity of lactation, 28, or 31%, had hopes of 5.0 thousand kg and above. Most of these cows had family, Miry 7209 (67%), Ryabuhy 9728 (57%), Valuty 413 (55%), Shchepky 4344 (50%), less-Sujety 6091 (36%), Chubarochky 7743 (33%), Tochky 8169 (25%), Laymy 8221 (16%), Voli 8369 (10%). Over a long period of economic use and lactation of animals of Valuty 413 family resulted higher in comparison with other families a lifelong yield. The influence of the origin of cows on the indices of milk productivity and effectiveness for lifelong use was discovered. The origin of the family significantly influenced on milk yield for better lactation and milk yield per 1 day of life. Other indicators were not significant according to the origin, although they had high values (from 5.4 to 26.7%). So we can consider it expedient to work with families to improve the duration and effectiveness of lifetime use of cows. Conclusions. The highest average yield for the first lactation animals is characterized by animals of Ryabuhy 9728 family, the content of fat in milk – by animals of Voli 8369 family. Long average duration and a better efficiency is in the life of the cows of Valuty 413 family. The highest average milk yield in one day life had animals of Valuty 413 family. Animals of Valuty 413 family are allocated at the average value of the coefficient of economic use. Optimal average lactation animals belong to the Voli 8369 and Shchepky 4344 families. In some families identified animals that have a lifetime yield of more than 50.0 thousand kg of milk. The influence of the origin of cows on the indices of milk productivity and effectiveness of lifetime use was installed. Between separate parameters of milk production and indicators of the duration and effectiveness of lifetime use of a set of reliable correlation, the magnitude and direction of which are different in animals of different families.

scholarly journals FEATURES OF HEREDITARY INFLUENCE OF HOLSTEIN BLOOD SHARE ON INDICATORS OF LONGEVITY OF COWS OF UKRAINIAN RED-AND-WHITE DAIRY BREED

2018 ◽  
Vol 51 ◽  
pp. 170-177 ◽  
Author(s):  
L. M. Khmelnychyi ◽  
V. V. Vechorka
Keyword(s):  
Life Expectancy ◽  
Milk Yield ◽  
Milk Fat ◽  
Positive Influence ◽  
Milk Productivity ◽  
Significant Difference ◽  
Two Generations ◽  
The Impact ◽  
Economic Use ◽  
Dairy Breed

At the base of a breeding farm in Cherkassy region, with the modern highly mechanized technologies of milk production, five groups of cows – the crossbred genotypes of Ukrainian Red-and-White Dairy breed with a gradation of 12,5% blood share of Holstein (I – 37,5-50,0; II – 50,1-62,5; III – 62,6-75,0; IV – 75,1-87,5; V – 87,6-100,0) were studied. The aim of this study was to explore the impact of Holstein heredity on indicators of life expectancy, economic use and lifetime productivity of cows. The results of retrospective analysis proved significant effect of Holstein conditional heredity on indicators of life expectancy, economic use and lifetime productivity of the Ukrainian Red-and-White Dairy cows of the experimental farm. The best among all five groups by indicators of life expectancy, economic use, number of lactations, lifetime milk yield and yield of milk fat, and milk yield for one day were the crossbred genotypes of the second group with conditional heredity of Holsteins 50,1-62,5 %. The advantage of the second group of animals with Holstein heredity from 50,1 to 62,5 % differed significantly in life expectancy and economic use exceeding other groups of animals by these traits by 451-1449 and 465-1472 days respectively with a significant difference at P<0,001, except their comparison with the first group. The animals of this group were used the longest in the herd, during five lactations and characterized by the highest coefficient of economic use and it is higher by 1,2-3,1 lactation and by 6,0-20,7 coefficient of economic use respectively, with degree of reliability at P<0,01-0,001 compared with all the groups of crossbred genotypes. For lifetime milk productivity advantage was also in favor of crossbred animals with Holstein heredity from 50,1 to 62,5%. If milk yields of crossbred genotypes of the first and third groups were less than the yield of animals of the second group only by 5571 and 5848 kg (P<0,05 and 0,01), then for high-blood genotypes of the fourth and fifth groups they were less by 11813 and 14021 kg at P<0,001 or in 1,7 and 2,0 times. In general, cows with the highest share of Holstein blood (87,6-100,0%), and this is genotype which will have a dominant distribution in the array of Ukrainian Red-and-White Dairy breed at least for one or maximum for two generations, with 305-day milk yield of first-calf heifers of 5677 kg and for one day of economic use 14,0 kg of milk exceeded other groups of crossbred genotypes with degree of reliability by 455-806 (P<0,001) and 0,8-2,5 (P<0,01-0,001) kg of milk respectively; it unconditionally testifies to positive influence of Holstein heredity on these traits. The best crossbred genotypes by indicators of life expectancy, economic use, number of lactations and lifetime productivity were with 50,1-62,5% share of Holstein blood in the herd of Ukrainian Red-and-White Dairy cattle. Productivity of crossbred cows per lactation increased with growing share of Holstein blood, but indicators of longevity and lifetime productivity decreased significantly, especially at high-blood animals with heredity of improving breed higher than 75,1%.

scholarly journals Features of milk productivity of cows of Ukrainian brown dairy breed and the influence of genotypical and paratypical factors on its formation

2018 ◽  
Vol 20 (89) ◽  
pp. 8-16
Author(s):  
Y. I. Sklyarenko
Keyword(s):  
Milk Yield ◽  
Significant Influence ◽  
Milk Fat ◽  
Reproductive Capacity ◽  
Milk Productivity ◽  
Reproductive Ability ◽  
Breeding Farms ◽  
The Impact ◽  
Economic Use ◽  
Dairy Breed

The indicators of milk productivity of cows of Ukrainian brown dairy breed were studied. The research was carried out on the basis of breeding farms of animal breeding of this breed by assessing the data of primary zootechnical accounting. It is established that the level of milk productivity of cows meets the breed standard and is within 4.5 thousand kg of milk. A significant correlation between the indicators of milk productivity and reproductive capacity was found. Milk productivity is negatively correlated with the main indicators of reproductive ability. The influence of genetic and paratypic factors on the formation of milk productivity was studied. It is established that a conditional bloodedness, linear membership and origin in the father significantly affects the level of milk productivity of cows. The impact of genetic factors increases from conditional crow nest of Swiss breed to descent on the father. Animals with the highest proportion of Swiss breed were significantly dominated by other animals by the milk yield per the first lactation. The highest milk yield in the first lactation were obtained from the animal of Vigate 083352 line and the smallest of Payvan 136140 line. By the greater amount of milk fat and protein, the animals of the Vigate 083352 line also prevailed. Animals from different bulls for the first lactation had milk yield in the range of 2780–4464 kg of milk, the amount of milk fat and protein, respectively, 103–176 kg and 89–134 kg. A big impact on the economy of milk production having a term of economic use of animals. Therefore, in our view longevity as a symptom of dairy cows is an important selection basis. The significant influence of genotypic factors on the indicators of the duration of use and lifetime productivity of cows was established. The greatest impact of the paratypical factors had the farm, which contains animals. The conditions of keeping and feeding in the farm had a significant impact on the duration of use and lifetime productivity of cows. The presence of significant influence of genotypic and paratypical factors on the milk productivity of animals makes it possible to improve its breeding and technological activities.

scholarly journals Bioenergetic and ethological features of the first-calf heifers of different genotypes

2021 ◽  
Vol 4 (1) ◽  
pp. 51-55
Author(s):  
O. O. Borshch ◽  
S. Yu. Ruban ◽  
O. V. Borshch ◽  
V. M. Polishchuk
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
First Generation ◽  
Fat Content ◽  
Exchange Energy ◽  
Brown Swiss ◽  
Daily Milk Yield ◽  
Dairy Breed ◽  
Slight Advantage ◽  
Daily Milk

The aim of this work was to study bioenergetic and ethological indicators in crossbred first-calf heifers compared to purebred first-calf heifers. The research was conducted on the first-calf heifers of Ukrainian Black-Pied dairy breed and first-generation crossbreeds obtained as a result of crossing with Brown Swiss breed, as well as, on the first-calf heifers of Ukrainian Red-Pied dairy breed and first-generation crossbreeds obtained as a result of crossing Ukrainian Red-Pied dairy with Montbéliarde breed. The purebred Black-and Red-Pied first-calf heifers prevailed over crossbreed first-calf heifers on the indicator of milk yield for 305 days of lactation by 106.45 and 218.36 kg, respectively. Accordingly, the indicators of average daily milk yield were also higher by 0.35 and 0.72 kg and the indicators of average daily milk yield adjusted by 4 % fat content per 0.15 and 0.16 kg. At the same time, the indicator of average fat content in milk prevailed in crossbreeds of Black-Pied and Brown Swiss breed by 0.08 % compared to purebred Black-Pied breeds, and in Red-Pied crossbreeds with Montbéliarde breed by 0.16 % compared to purebred Red-Pied breeds. The purebred Black-Pied first-calf heifers had an advantage by 2.04 MJ compared to crossbreeds, while the Red-Pied first-calf heifers had a slight advantage by 0.06 MJ compared to crossbreed first-calf heifers on the indicator of daily cost of exchange energy (EE). The purebred Black-and Red-Pied first-calf heifers had higher cost of exchange energy allocated with milk compared to crossbreed first-calf heifers by 0.42 and 0.82 MJ. They also had higher cost of exchange energy rates for heat products by 0.79 and 0.25 MJ. According to the energy index indicator, purebred Black - and Red-Pied first-calf heifers prevailed over crossbreeds first-calf heifers by 0.16 and 0.07 %, respectively. The same trend was observed in relation to the productive index indicator. The purebred Black-and Red-Pied first-calf heifers had a slight advantage by 0.001 and 0.002 kg adjusted by 4 % of milk fat content per 1 MJ. According to the indicators of daily behavioral reactions, no special differences between a purebred and crossbreed were found.

scholarly journals GENESIS AND PROSPECTS OF RED DAIRY CATTLE IN UKRAINE

2018 ◽  
Vol 51 ◽  
pp. 41-60 ◽  
Author(s):  
M. V. Gladiy ◽  
Yu. P. Polupan ◽  
I. V. Bazyshina ◽  
A. E. Pochukalyn ◽  
T. P. Koval ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Milk Yield ◽  
Gene Pool ◽  
Milk Fat ◽  
Large Scale ◽  
Breeding Value ◽  
Simultaneous Increase ◽  
The Past ◽  
Breeding Farms ◽  
Dairy Breed

Ukrainian population of red dairy cattle is genetically active, its gene pool is significantly improved in each of the next generations, mainly due to artificial selection. Currently breeding structure of Ukrainian Red Dairy breed has the prospect of future expansion due to creating Podolian zonal type. Features of its formation are to use as the original breed, which being improved, Red Polish cattle. This breed, as Red Steppe cattle, was listed as a breed to preserve the gene pool under pure breeding. However, gene pool preservation of these breeds is impossible through lack of sufficient number of purebred bulls or their semen at breeding enterprises in Ukraine. The aim of our research was to study genesis and development prospects of red dairy cattle in Ukraine. Materials and methods of research. The materials of the research were the data of identifying breed composition of cattle in Ukraine by January 1, 2015, State Breeding List for 2005, 2010 and 2015, the electronic information database of leading breeding farms for 2007 and 2011 and database of bulls admitted to using during 2005, 2010 and 2015 of Institute of Animal Breeding and Genetics named after M.V. Zubets of NAAS. Results. Currently the group of cows of red breeds is about 365 thousand head, including 97.9 thousand head concentrated in agricultural enterprises. The largest share of this group takes the Red Steppe cattle (84.5%), the smallest one –Ayrshire and Angler breeds (0.7-0.8%). In Ukraine, the total number of Ukrainian Red Dairy cattle is about 40 thousand head, including 21.4 thousand head of cattle concentrated in agricultural enterprises. The results of these annual reports have shown that the average milk yield of the group of cows of red breeds was 3328 kg of milk in 2001. Then milk yield increased with each subsequent studied period and reached the highest figure of 4681 kg in 2014. So, increasing milk yield of cows was by 1353 kg of milk or 29% during fourteen years (2001-2014). The number of breeding animals of Red Steppe, Red Polish, Ayrshire, and Ukrainian Red Dairy breeds significantly decreased in the controlled part of population during the past fourteen years. However, level of milk production and quality increased slightly, except for Red Polish breed. Thus, 4688 cows of Ukrainian Red Dairy breed had milk yield in 5981 kg and milk fat content in 3.88% according to the appraisal of 2014, whereas, in 2013, 4902 cows had milk yield in 5837 kg with milk fat content in 3.86%. Up to 90% of the realized genetic progress in large-scale breeding is provided by using proven bulls, resulting most current need is to restore the national system of selection and testing of sires. The results show that during the past ten years, the number of proven bulls, admitted to using within the red breeds decreased almost seven times with a simultaneous increase 2.2 times in breeding value. Among 410 proven bulls, admitted to using in 2005 (bulls which being tested by progeny), unreasonably disproportionate share was for Holstein sires – 245 (59.8%), whereas, the share of bulls of the red breeds – 13.7%. In 2010, 123 bulls (65.4%) were of Holstein breed and only 9 ones (4.8%) – of Ukrainian Red Dairy among 188 bulls, admitted to using. In 2014, a similar situation was observed; there were 93 bulls, admitted to using, including 48 ones (51.6%) of Holstein and only 3 ones (3.2%) of Ukrainian Red Dairy breed. Given the current state of livestock breeding base on all the red breeds (Red Steppe, Ukrainian Red Dairy, Angler, Red Polish) we developed possible options of parameters of large-scale breeding. During the planning period the number of the controlled cows of the red breeds (mainly Ukrainian Red Dairy cattle) should be significantly increased. Calculations show that in the first stage of the program available number of cows in breeding farms, even if 30% of cows allocated to mating with laid-off bulls, is less than a third of the minimum at pressure of selection among laid-off bulls 1: 4 by productivity of 50 daughters. At the end of the program it is planned to increase the pressure of selection among laid-off bulls to 1:5 under increase of the controlled livestock number to 43700 cows (nearly 4.4 times against currently available one) Conclusion. Our results showed that, the number of breeding farms, in which were bred red cattle, significantly declined and the livestock number also decreased whereas milk production increased during 2001-2015. The high level of genetic potential of Ukrainian Red Dairy cows indicates the presence of highest-yielding cows with yield more than 10 000 kg of milk. At the same time, such animals at breeding farms for breeding Red Polish, Steppe, Ayrshire and Angler cattle weren’t found. During the past ten years, the number of proven bulls of red breeds, admitted to using, decreased almost seven times with a simultaneous increase of breeding value in 2.2 times. Predominance of Holstein bulls remains indisputable on reliability of assessment of breeding value. It causes the biggest request and the widest offer on the market of semen from bulls of the breed. The actual destruction of domestic system of sires breeding caused significantly lower rate of repeatability of breeding values in bulls of the red breeds. This is a concern and threatens possible loss or significant restriction of the gene pool of red breeds.

scholarly journals CONDITIONALITY OF PRODUCTIVE LONGEVITY AND LIFELONG PRODUCTIVITY OF COWS OF BLACK-WHITE BREED BY GENETIC FACTORS

2017 ◽  
Vol 53 ◽  
pp. 222-227
Author(s):  
T. M. Komendant
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
Total Duration ◽  
Statistical Processing ◽  
Lactation Period ◽  
Milk Productivity ◽  
Holstein Breed ◽  
Long Period ◽  
The Impact ◽  
Economic Use

Objective: to study the dependence of productive longevity of cows of black and motley breed on genetically determined factors - linearity and bloodiness in Holstein breed. Methods: zootechnical, biological, statistical. The materials of the studies were pedigree cards of cows  and bulls, bull catalogs, zootechnical reports on pedigree work with the herd, the cattle base of the Grodno region, and also registers of rearing and rearing of the litter. To study the effect on the longevity of cows and their lifelong productivity of the "linear accessory" factor, all animals that were eliminated in 2006-2014 were divided into groups according to the lines: Adema 25437, Annas Adema 30587, Vis Eidial 933122, Montvik Chiftein 95679, Nico 31652 , Pabst Governera 882933, Reflection Sovering 198998, S. Sensation 1267271, Hiltes Adema 37910. Depending on the bloodiness of the Holstein breed, the animals were divided into four groups: I - up to 25% of Holstein genes, II- 25,0 – 49,9% of the genes of the Holstein genus, III - Holstein blood 50% and more, IV - purebred black-motley cows. Indicators of milk productivity (life-time milk yield (kg) and lifetime yield of milk fat (kg), milk yield for 1 day of lactation (kg), total duration of the lactation period (days) were studied in the experimental animals, and the duration of economic use (lactations). Main results. The results obtained during the statistical processing of data indicate that the cows belonging to the Pabst Governera line 882933 differed in the longest period of economic use among the abandoned animals. Duration of use in animals of this line was 8.43 lactations, which is more than for cows of other lines at 1,72-6,67 lactation. It should be noted that cows belonging to the Adem 25437 lines (6,71 lactations) and S. Sensation 1267271 (5,49 lactations) were also characterized by a rather long period of economic use. Due to the long period of use of the cow, the Pabst Governera line 882933 had the highest indicator of lifelong milk yield – 51535,58 kg of milk and the yield of milk fat – 1914,03. But as for milk for one day of lactation, here the leadership belonged to individuals belonging to the line Vis Eidial 933122 and amounted to 21,19 kg of milk per day. Also, a fairly high indicator of milk yield for one day of lactation was observed in animals belonging to the line Montvik Chiftain 95679 – 21,02 kg of milk. As a result of the research it was found that the largest term of economic use was characterized by low-breed hybrids with Holstein breed (up to 25%) – 3,63 lactations. This group of animals exceeded the individuals of the remaining groups by 0,21-0,76 lactations. It is worth noting that purebred black-motley individuals also differed by a long period of productive use – 3,42 lactations. Conclusions. Analysis of the impact on productive longevity and indicators of lifetime productivity of the "linearity" factor among abandoned animals in the "Progress-Vertelishki" made it possible to establish the existence of significant differences in the duration of economic use of cows of different linear affiliation. Cows of the Pabst Governera line 882933 – 8,43 lactations, 51535,58 kg of milk and 1914,03 kg of milk fat were distinguished by the greatest period of productive longevity, and also by the highest milk yield and milk fat content. It was established that the crossing of black and white cattle with Holstein breed positively influenced the productive longevity of animals, but on condition that the blood on the improving rock did not exceed 25%. Low-breed hybrids with Holstein breed exceeded the animals of other groups by the duration of their economic use by 0,21-0,76 lactations. Thus, we recommend breeding cows of black and motley breeds in the "Progress-Vertelishki", taking into account the impact on productive longevity and milk productivity of such factors as linearity and bloodiness in Holstein breed.

SIRE BY HERD INTERACTIONS FOR MILK YIELD AND COMPOSITION TRAITS

1977 ◽  
Vol 57 (3) ◽  
pp. 383-388 ◽  
Author(s):  
A. K. W. TONG ◽  
B. W. KENNEDY ◽  
J. E. MOXLEY
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
Genetic Parameter ◽  
Genetic Correlations ◽  
Dairy Herd ◽  
Protein Yield ◽  
Reduced Model ◽  
Parameter Estimates ◽  
Full Model ◽  
Reduced Models

A total of 13,561 Holstein 305-day lactation records from 779 Quebec and Maritime herds enrolled on the Dairy Herd Analysis Service were used to evaluate the importance of sire × herd interactions for milk yield and composition traits. Sire × herd interaction accounted for 4.1, 1.1, 0.3, 2.6 and 5.6% of the total variation of milk, fat and protein yield and fat and protein percent, respectively. Genetic parameter estimates obtained under two different models, a full model that accounted for sire × herd interaction and a reduced model that ignored it, were examined. Heritabilities of milk, fat and protein yield and fat and protein percent were, respectively: for the full model, 0.36, 0.47, 0.45, 0.59 and 0.31 and for the reduced model, 0.49, 0.50, 0.46, 0.66 and 0.46. Phenotypic correlations between the traits were not appreciably different when estimated under the full and reduced models. Genetic correlations between the yield traits were also similar when estimated under the full and reduced models, but genetic correlations between yield and percentage traits were more stongly positive, or less negative, when sire × herd interaction was accounted for. The genetic correlation between fat and protein percent was larger under the reduced model than under the full model.

scholarly journals Schätzung genetischer Parameter für Testtagsergebnisse von Milchleistungsmerkmalen bei Bunten Deutschen Edelziegen

2004 ◽  
Vol 47 (2) ◽  
pp. 193-202
Author(s):  
D. Bömkes ◽  
H. Hamann ◽  
O. Distl
Keyword(s):  
Protein Content ◽  
Milk Yield ◽  
Milk Fat ◽  
Genetic Parameters ◽  
Genetic Correlations ◽  
Protein Yield ◽  
Lower Saxony ◽  
Genetic Progress ◽  
Performance Traits ◽  
Milk Performance

Abstract. Title of the paper: Estimation of genetic parameters for test day records of milk performance traits in German Improved Fawn The objectives of this study were to estimate genetic parameters for milk performance traits of German Improved Fawn by using univariate und multivariate animal models. The analysis was based on 27,778 test day records of 1,848 German Improved Fawn with 3,574 lactation records distributed over 229 flocks in Lower Saxony, Saxony and Baden-Wuerttemberg. Milk records were sampled between 1988 and 2002. The animals in our analysis were the progeny of 455 sires and 1.148 does. Heritabilities estimated with a multivariate test day model with fixed regression were h2 = 0.19, 0.16 and 0.15 for milk, fat and protein yield. For fat and protein content and Somatic Cell Score (SCS) heritabilities were h2 = 0.17, 0.14 and 0.16, respectively. The additive genetic correlations between milk yield and fat as well as protein yield of German Improved Fawn were very high and positive (rg = 0.84 and rg = 0.77). Milk yield and milk contents were genetically negative correlated with rg = −0.28 for fat and rg = −0.22 for protein content. A moderate additive genetic correlation (rg = 0.48) between fat and protein content was estimated. There were no considerable additive genetic correlations between fat yield and protein content as well as between fat content and protein yield (rg = 0.05 and rg = 0.09). Additive genetic correlations between milk, fat or protein yield and SCS were high and negative, whereas additive genetic correlations between fat or protein content and SCS were low and positive. The genetic parameters estimated from field test records allow to achieve genetic progress in milk performance traits of German Improved Fawn.

Milk productivity of cows of Black-and-White breed depending on the part of Holstein blood

2020 ◽  
pp. 16-29
Author(s):  
T. Shishkina ◽  
T. Guseva ◽  
A. Galiullin ◽  
N. Semikova
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
Milk Productivity ◽  
Black And White ◽  
Holstein Breed ◽  
Genetic Potential ◽  
White Breed ◽  
New Generation ◽  
Economic Use ◽  
Best Parameters

A retrospective analysis of the dynamics of traits of milk productivity of Black-and-White cows with increased the part of Holstein breed blood has been carried out. Two groups have been formed from the number of culling animals of two adjacent generations: the 1st group (basic generation) with the part of Holstein breed blood of 3/4 (75 %) and the 2nd group with the part of Holstein breed blood of 7/8 (87,5 %) per 35 heads in each. As a result, it has been found that cows with the part of blood of 7/8 had the best indicators of milk productivity for I, II and III lactation. They significantly exceeded the indicators of cows with part of Holstein blood of 3/4 in terms of milk yield and yield of milk fat. The decrease in average daily milk yields for months of lactation in high-blooded cows was lower by 3 %, and the indicator of full-competed lactation was higher by 17,8 %. High-blooded animals have been culled out of the herd more intensively. By the end of the third lactation, the livability of livestock in the 1st group was 100 %, and in the second group – 23 %. The best parameters of productive longevity were distinguished by animals of the basic generation with the part of Holstein breed blood of 3/4. They signifi cantly surpassed of high-blooded animals in terms of longevity and period of productive longevity, respectively, by 1109 (P < 0,001) and 739 (P < 0,001) days, and in terms of lifetime milk yield – by 14392 kg (P < 0,001). The increase of the part of the blood of cows to 7/8 was carried out using purebred producers of foreign selection, the new generation of high-blooded animals had a relatively high genetic potential. However, 7/8-blooded cows of Holstein breed used it only by 53,4 %, which was by 24,3 % (P < 0,001) lower than the base generation. Thus, in the current environments of CJSC “Konstantinovo” high-blooded animals of Holstein breed do not suffi ciently realize the genetic potential, and the increase in productivity is associated with the loss of milk due to the decrease in the duration of economic use of animals. Based on this, we propose at the present stage to suspend the upgrading crossbreeding and return to the using Holsteinized sires domestic selection with the part of Holstein breed blood of 75 to 85 %.

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