scholarly journals Labour productivity of dairy cattle farming in Central and Southeast Bulgaria

2020 ◽  
Vol 18 (3) ◽  
pp. 244-249
Author(s):  
K. Stankov
Keyword(s):  
Dairy Cattle ◽  
Milk Production ◽  
Labour Productivity ◽  
Work Unit ◽  
High Quality ◽  
Black And White ◽  
Technological Level ◽  
Cattle Farming ◽  
The Cost ◽  
Cattle Farms

A study was conducted on labour productivity in dairy cattle farms that breed Black-and-White cows. The study encompassed 90 farms, thus including 6471 cows. The farms were divided into four groups: small – 8 farms with an average of 3.6 cows; medium – 32 farms with an average of 22.9 cows; large – 32 farms with an average of 74.2 cows; and huge – 18 farms with 185.3 cows per farms. The results of the study indicated that large and huge farms are distinguished by high labour productivity. The income from production, profit, milk quantities, and the cost of one annual work unit (AWU) and a man-hour were several times higher compared to small and medium farms. Production was organised at a much better technological level, which was a contributing factor towards high-quality and competitive milk production. A recommendation to the small and medium farms would be to grow larger, improve their selection, and develop technologically.

THE LIVE WEIGHT GROWTH OF BULLS OF DIFFERENT BREEDS

2017 ◽  
Vol 53 ◽  
pp. 115-119
Author(s):  
A. V. Dymchuk ◽  
O. I. Lyubynskyy
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Dairy Cattle ◽  
Live Weight ◽  
Mathematical Statistics ◽  
High Quality ◽  
New Born ◽  
Black And White ◽  
Daily Average ◽  
Weight Growth

The studies of the dynamics results of body weight, absolute and daily average, relative increases averaging bulls of Ukrainian black-and-white and Ukrainian red-and-white dairy cattle. Researches are conducted in the conditions of POSP «Napadivske» Kalyinivka district of the Vinnytsya area after materials of primary pedigree account. In an economy use the whole-year of the same type feeding. In the structure of ration 40% make the concentrated sterns and also high-quality silage and soilage. Average daily increases of bulls for period of age to realization for a slaughter made over 1000 grammes. The dynamics of growth of living mass, absolute, average daily and relative increases of bulls, is analysed Ukrainian black-and-white and Ukrainian red-and-white dairy cattle. Living mass and weight gain researches of age to 12-monthly age with an interval in 3 months after the generally accepted methods. Materials of researches are worked out the methods of mathematical statistics with the use of programmatic package of Statistica 8.0. Living mass of bulls of the second group at birth made 36,3 kg, that anymore on 0,8 kg by comparison to new-born bulls of the first group. In all next periods living mass of animals of the second group was greater as compared to the animals of the same age of the first. In 3 months advantage made 1,7 kg, in 6 months – 4,6 kg (P>0,95), in 9 months – 8,8 kg (P>0,95), in 12 months – 12,5 kg (P>0,99). Difference of absolute increases of bulls of the second group above the bulls of the same age of the first of age to to 3-monthly age made 0,8 kg in behalf of animals of the second group. In a period 3-6 months a difference is after this index between the first and second groups made 2,9 kg in behalf of the last. In periods 6-9 and reliable advantage of animals of the second group is 9-12 months set above the bulls of the same age of the first on 4,1 kg (P>0,95) and 3,7 kg (P>0,95) accordingly. In a period of age to 18-monthly age absolute increases of bulls of the second group were greater by comparison to bulls first on 12,5 kg (R>0,99). Average daily increases of bulls of the second group of age to 3-monthly age made 763,0 grammes, that anymore on 8,9 grammes by comparison to bulls of the first group. In periods 3-6 months the average daily increases of animals of the second group prevailed the bulls of the same age of the first on 32,6 grammes. In a period 6-9 months the average daily increases of animals of the second group were made by 1045,9 grammes, that for certain anymore on 45,9 grammes (P>0,95) by comparison to the bulls of the same age of the first. Maximal increases of bulls were in a period 9-12 months and made 1210,4 grammes in the animals of the second group and 1168,9 grammes – for the bulls of the same age of the first, that for certain anymore on 41,5 grammes (P>0,95). In a period of age to 12-monthly age the average daily increases of bulls of the second group were made by 970,6 grammes, that was for certain anymore on 31,8 grammes (R>0,99) by comparison to the bulls of the same age of the first group. Relative increases of bulls of both groups were high. From birth to 3-monthly age greater increases had bulls of the first group – 97,8%, and in periods 3-6, 6-9 and 9-12 months greater were increases of bulls of the same age of the second group – 56,4; 40,1 and 32,4% accordingly. For all probed periods of reliable advantage it is not discovered between the compared groups. It is set researches, that at the identical terms of feeding and maintenance more rapid bulls grow Ukrainian red-and-white dairy cattle. In all age-old periods they prevailed the bulls of the same age of the Ukrainian black-and-white dairy cattle, in a that number, beginning from 9-monthly age, advantage was reliable (P>0,95–0,99). Average daily increases of bulls of two breeds were the least in a period of age to to 3-monthly age – 754,1-763,0 grammes, and most in a period 9-12 months – 1168,9–1210,4 grammes.

scholarly journals Genetic potential of milk productivity of black-and-white cows depending on selection and management

2020 ◽  
Vol 17 ◽  
pp. 00158
Author(s):  
Alexander Lyubimov ◽  
Ekaterina Martynova ◽  
Yulia Isupova ◽  
Ekaterina Yastrebova ◽  
Elena Achkasova
Keyword(s):  
Dairy Cattle ◽  
Milk Production ◽  
System Technology ◽  
Milk Productivity ◽  
Genetic Progress ◽  
Black And White ◽  
Traditional Technology ◽  
Genetic Potential ◽  
Livestock Productivity

Currently an increasing attention is paid to breeding animals ensuring the greatest genetic progress of populations in livestock productivity, i.e. stud bulls. Hence, the study of the realization degree of genetic potential of productivity of dairy cattle with different ecogenesis in the conditions of industrial and traditional technology of milk production seems quite relevant. The study revealed that the degree of realization of genetic potential of stud bulls in traditional (tied-up system) and industrial (cubicle system) technology is different.

scholarly journals Associations between milking technology, herd size and milk production parameters on commercial dairy cattle farms

2020 ◽  
Vol 70 (2) ◽  
pp. 103-111
Author(s):  
Dorottya Ivanyos ◽  
László Ózsvári ◽  
István Fodor ◽  
Csaba Németh ◽  
Attila Monostori
Keyword(s):  
Dairy Cattle ◽  
Milk Production ◽  
Milk Yield ◽  
Linear Models ◽  
Herd Size ◽  
Exact Test ◽  
Production Parameters ◽  
Daily Milk Yield ◽  
Cattle Farms ◽  
Daily Milk

The aim of the study was to survey the milking technology and to analyse the associations between milking parlour type, herd size, and milk production parameters on dairy cattle farms. The milking technology was surveyed by using a questionnaire in 417 Hungarian dairy herds with 177,514 cows in 2017, and it was compared with their official farm milk production data. The surveyed farms were categorized according to their size (1-50, 51-300, 301-600, and >600 cows) and to their milking parlour types (herringbone, parallel, carousel, and others). The relationships were analysed by multivariate linear models, one-way ANOVA, and Fisher’s exact test. Pairwise comparisons were performed by Tukey’s post hoc tests. The prevailing type of milking parlour was herringbone (71.0 %), but on larger farms the occurrence of parallel and carousel parlours increased (p<0.001). The number of milking stalls per farm increased with herd size (p<0.001). Farms with herringbone parlour had significantly smaller number of milking stalls than that of parallel (p=0.022) and carousel (p<0.001) parlours, and the cows were mostly milked two times, while in carousel milking parlours mostly three times a day. As the herd size increased, so did daily milk yield (p<0.001) and daily milk production per cow (p<0.001). Herd size was associated with somatic cell count (p<0.001). The type of milking parlour showed significant association with daily milk yield (p=0.039) and dairy units with herringbone milking system had the lowest milk quality. Our findings show that herd size has greater impact on milk production parameters than milking technologies.

scholarly journals PRODUCTIVITY OF COWS OF UKRAINIAN BLACK-AND-WHITE AND RED-AND-WHITE DAIRY BREEDS

2018 ◽  
Vol 51 ◽  
pp. 112-118
Author(s):  
V. V. Machulnyi
Keyword(s):  
Dairy Cattle ◽  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Fat Content ◽  
Reproductive Capacity ◽  
Black And White ◽  
Reproductive Ability ◽  
Service Period ◽  
Dairy Breed

Milk yield of cows in breeding herds, Cherkassy region, for last completed lactation averaged 6442 kg of milk with 3.62 % fat content. Currently the question of interconnection of cows’ milk production and reproductive capacity is especially important, because the significant increase in milk yields makes minimize calves. The successful conduct of breeding had set the goal to detect the best options for combining milk production and reproductive ability of animals.To characterize the level of milk production including reproductive ability of cows we used indicator of daily average milk yield per one day of periods between calving (PBC). The best service period can be considered period of 51-90 days, that allows you to get one calf per cow per year (average PBC is 351 days) and maintain high milk production (6431 ± 39.6 kg during 305 days of lactation). With this service period all indicators of milk production and reproductive ability are at high level. Reduced service period below recommended levels will reduce the duration of lactation and milk production, and increasing service period will increase the duration of lactation with a simultaneous reduction in milk production for 305 days. Herewith deterioration of reproductive ability is marked and manifested in the increase of the insemination index, decline in the reproductive capacity, increase of periods between calving and as a result, reduce of calves and culling barren cows.Analysis of genealogical structure of the studied herds points to low diversity (Ukrainian Black-and-White dairy cows belong to 6 lines and Ukrainian Red-and-White dairy cows – to 8 ones) with high affinity (by Chief 1427381.62 to R. Sovereign 198998 bloodline, by Starbuck 352790.79 to Elevation 1491007 and Ideal1013415 bloodlines).Genealogical structure of the herds is saturated a lot of bulls genealogical groups of Holstein cattle: Chief 1427381 – 11 bulls in the array of Ukrainian Black-and-White dairy breed and 5 ones in Ukrainian Red-and-White dairy breed, Starbuck 352790.79 – 10 sires in the array of Ukrainian Black-and-White dairy cattle and 3 ones in Ukrainian Red-and-White dairy breed, Elevation 1491007.65 – 4 sires in the array of Ukrainian Black-and-White dairy cattle and 3ones in Ukrainian Red-and-White dairy breed.Currently the sires of Chief 1427381.62 (7712-3,76-289,9-3,14-242,1), Starbuck 352790 (7857-3,87-295,4-3,07-241,2), Jocko Besne 694028588.94(6687-3,88-259,5-3,03-202,6), and Bell 1667366 bloodlines (61341-3,95-242,3-3,02-185,2) among sires of Ukrainian Black-and-White dairy cattle and the sires of Cavalier 1620273.72 (7285-3,98-289,9-3,08-224,4), Chief 1427381.62 (7522-3,76-282,8-3,00-225,7),Starbuck 392405 (7667-3,87-296,7-3,00-230,0), and Elevation 1491007.65 bloodlines (7544-3,80-286,7-3,5-230,0) among sires of Ukrainian Red-and-White dairy breed are classified to a highly productive and promising for breeding and wider use by productive qualities.After the first insemination the lowest proportion of fertilized cows is among offspring belonging to Chief 1427381 bloodline which is only 38 % among both breeds. However, the milk yield of breeding stock belonging to this bloodline is 7712 kg with 3.76 % fat content for Ukrainian Black-and-White dairy cows and 7522 kg of milk with 3.76 % fat content for Ukrainian Red-and-White dairy cows. Daughters belonging to Elevation1491007, Valiant 1650414, and Hanover 1629391 bloodlines with yields of 4566-5478 kg of milk per lactation had a part of fertilized cows, after the first insemination, at the level of 41-49 %. Fertilization after the first insemination above 50% was in daughters belonging to Cavalier 1620273.72 (52%), Starbuck 392405(50-55 %), Bell 1667366(56%) and Jocko Besne 694028588.94 bloodlines (64 %). The level of performance of these animals for milk yield ranged from 6134 kg to 7857 kg.Heritability coefficients of milk yield and duration of service period were low (0.118-0.289). A positive correlation can be explained by the fact that extension of service period (to a certain level) leads to growing number of milking days (duration of lactation) and defers a decrease in productivity of cows by physiological reasons, namely as a result of pregnancy. Low rates of heritability indicate little genetic diversity of traits and the significant influence of physiological and environmental factors in their formation.As Ukrainian Black-and-White and Ukrainian Red-and-White dairy breeds have a high proportion of heredity of Holstein breed which has genetically large fetus, there is need to study the characteristics of nature passing calving in cows of these breeds. Itis found the number of first-calf heifers which needed help was 52.4%. Animals calve alone in 47.6 % of all cases. Calving was without complications if the live weight of calves not exceeding 6-7% of mother’s weight. The cows calved without help of staff exceeded by 11.7% of the width of the pelvis in the buttocks, 7.5 % of the width of the ilium, and 7.1 % of its oblique length compared with animals of same age.

scholarly journals Age at first conception of high yielding cows

2011 ◽  
Vol 27 (3) ◽  
pp. 1043-1050 ◽  
Author(s):  
Z. Novakovic ◽  
Lj. Sretenovic ◽  
S. Aleksic ◽  
M.M. Petrovic ◽  
V. Pantelic ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Milk Production ◽  
Objective Assessment ◽  
Limiting Factor ◽  
Accurate Evaluation ◽  
Black And White ◽  
Holstein Friesian ◽  
Key Factor ◽  
High Production ◽  
Fertility Traits

Black and White low land dairy cattle have very pronounced ability for high production of milk. Fertility is the major trait of cattle and key factor in successful milk production. Fertility traits have pronounced variability and low heritability value. Fertility is regularly limiting factor in attempts to increase the milk yield. Age of dairy cattle at first conception is one of the major reproduction properties. Age of calves at first calving depends mainly on age at first conception. Previous researches have indicated what would be the optimum age at first conception of Black and White heifers. Age at first conception is determined by the date of birth and date of first conception. Knowledge of the strength of the environment factors on age at first conception in high yielding cows is important from the aspect of their inclusion into the model. According to the significance of individual systematic factors, their objective assessment was carried out for the purpose of accurate evaluation of obtained results. Objective of this paper is to study the age at first conception of high yielding Black and white cows through major systematic influences, by applying adequate methodology. Cows comprising the studied sample (n=331) belong to European type of Black and White dairy cattle in final stage of improving of this breed with Holstein-Friesian breed. Average age of dairy cattle at first conception was 491.19?9.36 days or 16.15?0.31 months. According to cows? the values were following: 479.31 days (> 73% HF), 486.12 days (58-73%HF) and 508.14 days (< 58% HF).

scholarly journals Impact of environmentally friendly technologies on costs and cost-effectiveness of a dairy cattle confinement system

2021 ◽  
Vol 42 (3Supl1) ◽  
pp. 1741-1758
Author(s):  
Marcos Aurelio Lopes ◽  
◽  
Fabiana Alves Demeu ◽  
Eduardo Mitke Brandão Reis ◽  
Francisval de Melo Carvalho ◽  
...  
Keyword(s):  
Cost Effectiveness ◽  
Dairy Cattle ◽  
Milk Production ◽  
Operating Cost ◽  
Environmentally Friendly ◽  
Total Cost ◽  
Cost Center ◽  
Confinement System ◽  
Break Even Point ◽  
The Cost

Our goal was to assess the economic impact of some environmentally friendly technologies on the production costs and cost-effectiveness of a dairy cattle confinement system, estimating environmental costs and their representativeness in both effective and total operating costs, as well as in the total cost. We assessed the cost-effectiveness of the cost center of milk production and identified the components that most affect final costs, estimating a break-even point (kg milk year-1) as well. The data were collected in a freestall full-confinement system of a dairy cattle farm located in southern Minas Gerais State (Brazil), from January 2016 to December 2017. The cost of milk production was estimated using a method based on the operating and total costs from a cost center involving lactating and dry dairy cows. The cost center of milk production showed to be economically feasible, showing positive gross and net margin results, as well as positive profitability and cost-effectiveness. Total environmental operating cost was on average R$ 0.015 per kg milk, which represented 1.985% of the total operating cost. Effective environmental operating cost was on average R$ 0.0059, which corresponded to 0.7788% of the total operating cost. Finally, total environmental cost was on average R$ 0.0317, representing 3.3280% of the total cost. The most representative items of the effective operating cost were in descending order: animal feed, workforce, animal health, animal production hormone (bovine somatotropin; bST), vehicle maintenance, machines and equipment, maintenance of improvements, electricity, and freestall bedding sand. Average break-even point was 1,104,038.54 kg milk year-1 or 3,024.76 kg milk day-1, while average production was 4,271,383.00 kg milk year-1 and 11,702.42 kg milk day-1.

scholarly journals Development of competitiveness and its determinants in Slovak dairy farms

2014 ◽  
Vol 60 (No. 2) ◽  
pp. 82-88
Author(s):  
M. Michaličková ◽  
Z. Krupová ◽  
P. Polák ◽  
L. Hetényi ◽  
E. Krupa
Keyword(s):  
Dairy Cattle ◽  
Milk Production ◽  
Milk Yield ◽  
Positive Impact ◽  
Dairy Farm ◽  
Effective Utilization ◽  
Unit Costs ◽  
Feed Costs ◽  
The Individual ◽  
Cattle Farms

The competitiveness and its determinants for Slovak dairy cattle farms during the years 2007 to 2011 was analysed. The economic database of the Research Institute for Animal Production Nitra was used as the basis. The profit in milk production with including the direct subsidies was assumed as the main parameter of the dairy farm competitiveness. The influence of the individual cost items and milk yield on the competitiveness was quantified using the multivariable linear regression model. Our results indicate that the farms were competitive in milk production only in 2007 and 2008. The highest profit (0.026&nbsp;&euro; per 1 kg of milk) was reached in 2007. It was mainly determined by the level of the milk price (+9%) and unit costs (&ndash;10%) in the evaluated period. The negative regression to the competitiveness was observed for the feed costs, labour costs, repairs and services, depreciations, other direct costs and overheads. On the other hand, the statistically positive impact of the milk yield was found. Generally, the effective utilization of the production potential of animals should be recommended as the main factor of the unit costs reduction as well as for the improvement of the dairy cattle farms profit. &nbsp;

scholarly journals Short communication: Impact of the intensity of milk production on ammonia and greenhouse gas emissions in Portuguese cattle farms

2015 ◽  
Vol 13 (4) ◽  
pp. e06SC05 ◽  
Author(s):  
José Pereira ◽  
Henrique Trindade
Keyword(s):  
Dairy Cattle ◽  
Greenhouse Gas ◽  
Milk Production ◽  
Ghg Emissions ◽  
Manure Management ◽  
Gaseous Emissions ◽  
Cattle Farm ◽  
Enteric Fermentation ◽  
Wide Range ◽  
Cattle Farms

<p>The aim of this study was evaluate the relationship between the intensity of milk production for a wide range of Portuguese commercial cattle farms and NH<sub>3</sub> and greenhouse gas (GHG) emissions from manure management and enteric fermentation. A survey was carried out at 1471 commercial dairy cattle farms (Holstein-Friesian) and the NH<sub>3</sub>, N<sub>2</sub>O and CH<sub>4</sub> emissions at each stage of manure management were estimated as well as CH<sub>4</sub> losses from enteric fermentation. Gaseous emissions were estimated by a mass flow approach and following the recommendations of IPCC guidelines. The manure management and enteric fermentation in a typical Portuguese cattle farm contributes with 7.5±0.15 g N/L milk produced as NH<sub>3</sub> and 1.2±0.22 kg CO<sub>2</sub> equivalent per litre of milk as GHG. Increasing milk production will significantly reduce NH<sub>3</sub> and GHG emissions per litre of milk produced. It can be concluded that a win-win strategy for reducing NH<sub>3</sub> and GHG emissions from dairy cattle farms will be the increase of milk production on these farms. This goal can be achieved by implementing animal breeding programs and improving feed efficiency in order to increase productivity.</p>

scholarly journals CRITERIA FOR ECONOMIC EVALUATION UNPRODUCTIVE COSTS FOR DAIRY CATTLE MAINTENANCE

2017 ◽  
Vol 54 ◽  
pp. 14-19
Author(s):  
M. V. Hladiy ◽  
O. V. Kruglyak ◽  
I. S. Martynyuk
Keyword(s):  
Economic Evaluation ◽  
Dairy Cattle ◽  
Milk Production ◽  
Financial Management ◽  
Economic Losses ◽  
Labor Costs ◽  
Quality Of Milk ◽  
Organization Of Production ◽  
The Cost

Costs are an important economic category that have a decisive influence on the definition of pricing policies and the formation of financial performance of the enterprise, characterizing the level of organization of production and application of technologies. According to expediency of their spending, costs are divided into productive and unproductive. Unproductive costs arise in the event of a violation of technology, deficiencies in the organization of production, etc. Therefore, it is necessary to ensure that the economic evaluation of unproductive costs in breeding dairy cattle is carried out in order to determine their volume and specific weight in total expenses. An economic evaluation unproductive costs for dairy cattle maintenance should be carried out on the basis of criteria that take into account the main factors affecting the efficiency. These criteria include innovation, production, market, social and environmental. Their assessment under all criteria is conducted using the methods of economic analysis. The reasons and dynamics of their emergence should be the subject of a thorough study of management accounting and financial management of enterprises. According to the analysis of the structure of the cost of livestock production in state enterprises "Experimental farm "Niva" and "Experimental farm "Khrystynivske" that are part of the network of the Institute of Animal Breeding and Genetics nd. a. M.V.Zubets NAAS (Cherkasy region) (Table 1 ), in the structure of the cost of milk production the largest share is the cost of feed (42.6%) and labor remuneration combined with accrual (20.4%). In the production of live weight of cattle for feed and wages account for 76.6% of all costs. Rational use of feed is one of the main ways to strengthen the economy of the enterprise. In order to avoid unproductive costs, it is necessary to observe all technological stages of production, storage, distribution and feeding of forages. Provision for increasing the efficiency of feed costs is to increase the conversion of feed to products and reduce the cost of the diet and its individual components. In particular, finding suppliers with lower prices for concentrated feeds and milk replacers, growing fodder crops with higher nutrition. The system for keeping animals is also important. For example, with untied, labor costs by 67% lower than with tied, the profitability of milk production is increased by 4%. The most economic losses to farms are caused by diseases of the mammary gland, which lead to a decrease in the milk productivity of cows, the quality of milk; an increase in the incidence of calves, and the abandonment of livestock. At present, the total unproductive costs of udder disease are estimated at the equivalent of 5-8% of the gross annual income, or from 2.6 to 4.1 thousand UAH. per cow. Other unproductive costs of dairy cattle maintenance of productivity direction are financial losses from the reduction of genetic potential, prolongation of the interotional period, the reduction of duration of the economic use of cows, the low quality of milk and the non-equivalent milk sales prices. Comprehensive economic assessment of unproductive costs, determined in accordance with innovative production, market, social and environmental criteria, will allow, in conditions of relative limited resources, to ensure the effective management of production processes of breeding dairy cattle, aimed at increasing profits.

scholarly journals Evolution of breeding process for reproduction of domestic producing bulls in the Republic of Belarus

2020 ◽  
Vol 58 (4) ◽  
pp. 455-471
Author(s):  
N. V. Kazarovets ◽  
I. P. Sheyko ◽  
T. V. Pavlova
Keyword(s):  
Dairy Cattle ◽  
Developed Countries ◽  
High Quality ◽  
Breeding Programs ◽  
Black And White ◽  
Legal Documents ◽  
The Social ◽  
White Breed ◽  
The Republic

The leading element in breeding programs for breeding and improving the breeds of dairy cattle in highly developed countries is reproduction of high-quality producing bulls. The paper presents the results of producing bulls breeding when creating Belarusian black-and-white breed of dairy cattle, techniques and methods of obtaining improving bulls when improving the Holsteinized dairy cattle of the republic at the present stage. It is shown that historically evolution of the breeding process of reproduction of domestic black-and-white bulls is based on imported breeding material from different countries (bulls, semen, heifers). Analysis of solution to the problem of using imported animals is presented. Periods of creating a breeding base for reproduction of imported material have been determined, methodological approaches and possibilities of breeding domestic producing bulls in the republic have been specified. Efficiency of breeding business for introduction of modern methods and techniques for assessing and reproduction of high quality breeding animals has been revealed. The periods of breeding process for reproduction of domestic producing bulls have been chronologically distinguished, including three stages: the first 1930-1990, the second 1990-2000, the third 2000 to the present. Substantiation of these time stages is based on the results of breeding activities carried out by scientists and breeders of the republic, and the social and economic conditions of those periods. Analysis of the created breeding base for reproduction of imported material has been carried out, including both breeding stock of breeding plants for parental forms breeding, as well as state breeding enterprises for rearing, evaluating and using the producing bulls. Normative legal documents developed by specialists of state services, scientists of the Belarusian Research Institute for Animal Breeding for the scheduled formation of the breeding base of dairy cattle in the republic have been indicated. The research results will make it possible to develop a concept for reproduction of highly valuable domestic improving bulls in terms of breeding for formation of Belarusian Holstein dairy cattle meeting modern production technology requirements in the context of intensification of the industry based on increase in the role of genetic factors. 

Sign in / Sign up

Export Citation Format

Share Document