THE GROWTH AND DEVELOPMENT OF HOLSTEIN BREED CALVES DEPENDING ON THE VIABILITY OF BIRTH INDICATORS

2016 ◽  
Vol 1 (4) ◽  
pp. 67-70 ◽  
Author(s):  
Баймишев ◽  
Khamidulla Baymishev
Keyword(s):  
Milk Production ◽  
Production Technology ◽  
Experimental Studies ◽  
Dairy Farm ◽  
Tail Length ◽  
Functional Evaluation ◽  
Holstein Breed ◽  
Reproductive Ability ◽  
Newborn Calves ◽  
Growth Development

The purpose of research is improving quality indicators of Holstein youth in intensive milk production technology. Experimental studies were carried out on dairy farm GUI SU Kupinskiy Bezenchukskaya district of the Samara region. The material for the study were heifers obtained from cows with different mothers continuedtive physiological periods. We have investigated the influence of cows physiological periods duration by morphofunctional parameters of newborn calves – their growth, development and reproductive qualities. The number of newborn calves, obtained from cows with different mothers about the duration of physiological periods, was formed three groups of animals 10 animals in each according to their belonging to the parent group. In newborn calves-governmental morphofunctional assessment on such indicators as the density of hair, the implementation of standing posture, the implementation of sucking reflex, the amount of O-incisor teeth, blood and tail length distance from the calcaneal tuber hock it was held. It was found that the performance of calves viability depends on the duration of periods of physio-logical cows-mothers. Indicators of morphological and functional assessment of calves at birth determine their further growth, development and reproductive ability. To increase reproductive ability of rearing under intensive milk production technology is necessary to optimize the parameters of physiological periods in cows and led to morphological and functional evaluation of calves at birth.

ДИНАМИКА КОНЦЕНТРАЦИИ ТРИГЛИЦЕРИДОВ В КРОВИ И БИОХИМИЧЕСКИЙ СТАТУС ПЕРВОТЕЛОК В ПРЕДОТЕЛЬНЫЙ ПЕРИОД И ВТОРОЙ МЕСЯЦ ЛАКТАЦИИ, СВЯЗЬ С РЕПРОДУКЦИЕЙ

2019 ◽  
Author(s):  
V.B. LEJBOVA ◽  
S.V. TIMOFEEVA
Keyword(s):  
Milk Production ◽  
Transition Period ◽  
Reproductive Function ◽  
Sharp Decrease ◽  
Negative Energy ◽  
The Body ◽  
Sharp Drop ◽  
Holstein Breed ◽  
Reproductive Ability ◽  
Service Period

Поступление питательных веществ из корма не покрывает возрастающие потребности организма в переходный период, в результате чего формируется состояние отрицательного энергетического баланса, для компенсации которого используются внутренние резервы организма и, в первую очередь, запасы липидов. Особенно актуальна эта проблема для новотельных первотёлок, испытывающих повышенную потребность в питательных веществах и энергии для завершения собственного роста. В нашей работе была изучена связь биохимического статуса у животных с разной динамикой триглицеридов крови перед первым отелом и на 2й мес лактации и показателями воспроизводства и молочной продуктивности. Объектом исследования служили 14 коров (нетелей) голштинской породы. В сыворотке крови, которую отбирали за 715 дней до и 4552 дня после отела, определяли содержание триглицеридов, холестерина, глюкозы, общего белка, альбумина, мочевины, а также активность ферментов. В конце 2го мес лактации параллельно с отбором проб крови определяли кондиции тела. В качестве показателей репродуктивной способности использовали интервал от отела до первого осеменения и продолжительность сервиспериода, молочную продуктивность оценивали по величине удоя за первые 100 дней лактации. Коровы разделились на 2 группы по интенсивности падения концентрации триглицеридов в крови в изучаемый период. В I группу (n7) вошли животные, у которых содержание триглицеридов резко снизилось с 0,2960,025 до 0,1160,008 ммоль/л. У животных II группы (n7) отмечено плавное снижение концентрации триглицеридов (менее чем в 2 раза). Установлено, что у первотелок с плавным снижением концентрации триглицеридов в крови сервиспериод был короче по сравнению с животными, показавшими резкое падение триглицеридов. При одинаковых условиях кормления и содержания животные обладают разной адаптационной способностью к метаболическим изменениям переходного периода, что обусловливает изменение репродуктивной функции у коров сходной молочной продуктивности.During the transition period, the amount of nutrients obtained from the feed does not cover the needs of the body. As a result, a negative energy balance is formed. To compensate for it, the body uses internal reserves, primarily lipids. This problem is particularly relevant for heifers in need of energy and nutrition to complete growth. The aim of this work was investigation the relationship of biochemical status of cows with different dynamics of blood triglycerides and indicators of reproduction and milk production before the first calving and on the 2nd month of lactation. Iin experience were study 14 cows (heifers) of Holstein breed. Blood for biochemical analysis were collected for 715 days before calving and 45 to 52 days after calving. We estimated concentration of triglycerides, cholesterol, glucose, total protein, albumin, urea, and enzyme activity. Body condition (BCS) was also determined at the end of the 2nd month of lactation. The interval from calving to the first insemination and the duration of the service period were used as indicators of reproductive ability. Milk productivity was estimated by the value of milk yield for the first 100 days of lactation. The cows were divided into 2 groups. 1 group (n7) animals with a sharp decrease of the content of triglycerides from 50,2960,025 to 0,1160,008 mmol/l (G1), 2 group (n8) with a smooth decline of the content of triglycerides (G2). It was found that heifers with a smooth decrease of the triglycerides concentration in the blood (G2) have a short service period compared to animals with a sharp drop in triglycerides (G1). Thus, animals have different adaptive capacity for metabolic changes in the transition period under the same conditions of feeding and maintenance, this fact determines a change in reproductive function in cows with the same milk production.

Sources and uses of information on a West Coast dairy farm

2002 ◽  
pp. 31-32
Author(s):  
C. Van der Geest
Keyword(s):  
Milk Production ◽  
Time Pressure ◽  
Data Gathering ◽  
Technical Information ◽  
Dairy Farm ◽  
Farming System ◽  
Herd Size ◽  
Financial Benefit ◽  
Nitrogen Response ◽  
Directional Information

I am a 30-year-old sharemilker on my parent's 600 cow developing farm near Blackball on the western side of the Grey Valley. Earlier this year I competed in the National Young Farmer of the Year competition and finished a close third. So what is information? There are two types of information that I use. There is data gathered from my farm to help fine tune the running of the day to day operations on the farm And directional information This is the information that arrives in papers and directs the long-term direction and plans of the farm and farming businesses. Due to the variability in weather on the Coast there is a greater need to monitor and adjust the farming system compared to an area like Canterbury. This was shown last year (2001/02) when the farm was undergoing a rapid period of development and I was under time restraints from increasing the herd size, building a new shed as well as developing the farm. The results of the time pressure was that day to day information gathering was lower resulting in per cow production falling by 11% or around $182 per cow. So what information was lacking that caused this large drop in profit. • Pasture growth rates • Cow condition • Nitrogen requirements • Paddock performance • Milk production • Pre-mating heat detection As scientists and advisers I hear you say that it is the farmer's responsibility to gather and analyse this information. You have the bigger topics to research and discover, gene marking, improving pasture species, sexing of sperm and ideas that I have not even contemplated yet. This is indeed very valuable research. Where would farming be without the invention of electric fences, artificial breeding and nitrogen research? But my problem is to take a farm with below average production to the top 10% in production with the existing technology and farming principles. I have all the technical information I need at the end of a phone. I can and do ring my consultant, fertiliser rep, vet, neighbour and due to the size and openness of New Zealand science, at present if they do not know I can ring an expert in agronomy, nutrition, soils and receive the answer that I require. I hope that this openness remains as in a time of privatisation and cost cutting it is a true advantage. I feel that for myself the next leap in information is not in the growing of grass or production of milk but in the tools to collect, store and utilise that information. This being tied to a financial benefit to the farming business is the real reason that I farm. Think of the benefits of being able to read pasture cover on a motorbike instantly downloaded, overlaying cow intake with milk production, changes in cow weight, daily soil temperature and predicted nitrogen response. Telling me low producing cows and poor producing paddocks, any potential feed deficits or surpluses. This would be a powerful information tool to use. The majority of this information is already available but until the restraints of time and cost are removed from data gathering and storage, this will not happen.

CONSEQUENCES OF “HOLSTEINIZATION” OF UKRAINIAN BLACK-PIED DAIRY BREED BY GENE BOLA-DRB3.2

2017 ◽  
Vol 54 ◽  
pp. 146-156
Author(s):  
T. M. Suprovych ◽  
M. P. Suprovych ◽  
R. V. Kolinchuk
Keyword(s):  
Genetic Distance ◽  
Milk Production ◽  
Genetic Similarity ◽  
Restriction Analysis ◽  
Allelic Polymorphism ◽  
Milk Productivity ◽  
High Productivity ◽  
Black And White ◽  
Holstein Breed ◽  
Specific Pcr

Introduction. The main direction of increasing the productivity of milk is to increase the proportion of heredity of the Holstein breed in the genotype of cows. Industrial breeds in Ukraine are improving due to the increase in the Holstein inheritance in the genotype of cows. The "holsteinization" of the most widespread domestic Black-and-White diary breed is intensively conducted. Currently, the percentage of heredity from Holstein is 90% or more. The negative effect of "holsteinization" appeared in reducing the resistance of animals to diseases that led to the spread of necrobacterial pathology. The control of the spread of necrobacteriosis can be based on genetic markers. Important markers can be the allele of the BoLA-DRB3.2 gene responsible for the formation of adaptive immunity. Due to the ambiguity of the results of "holsteinization", the following tasks were solved: To study the genetic structure of the herd for the BoLA-DRB3.2 gene at the beginning of the "holsteinization" and now. To compare the detected genetic structures with the alleles spectrum of North American Holstein and identify quantitative and qualitative changes in the structure of the herd genotype. To determine the effect of "holsteinization" on the dynamics of milk production and the state of morbidity by necrobacteriosis. Materials and methods of research. Comparison of alleles of population of the Ukrainian Black-Pied Dairy (UBPD) breed and Holstein breed was conducted to detect the consequences of "holsteinization" on milk yield and incidence of necrobacteriosis. The data of the allelic polymorphism of the BoLA-DRB3.2 gene of the UBPD10 (2010, n = 162), UBPD15 (2015, n = 114) and two Holstein populations of the USA and Canada were collected. The allelic spectrum was determined by the PCR-RFLP method. The amplification of the BoLA-DRB3.2 gene was performed using 2-step PCR with the use of primers HLO-30, HLO-31 and HLO-32 and allele-specific PCR. Restriction analysis was performed with endonuclease RsaI, HaeIII, BstYI (XhoII). Restriction fragments were separated by electrophoresis in 4% agarose gel. Counting of allele frequencies was performed taking into account the number of homozygotes and heterozygotes found for the corresponding alleles. To determine the phylogenetic relationships between the populations of the studied herds, genetic distance and genetic similarity were determined by the M. Nei method. Individual dairy productivity of cows was estimated for all lactation (regardless of its duration). Average milk yields were determined as the total volume of milk produced divided by the number of dairy cows. Results and discussion. The breeding measures carried out led to the accumulation of alleles characteristic of the Holstein breed. For Holstein, there are eight alleles with a frequency of more than 4%. It is alleles *03, *07, *08, *11, *16, *22, *23, *24. A high degree of consolidation of weighty alleles can be outlined. In total they occupy 84,6% of allele spectrum of the population. Consolidation of such alleles in the herd of the Ukrainian Black-and-White diary breed is much lower - only 52.2%, although it increased by 6.2% over 5 years. Alleles *10, *13 and *28 are "weighty" for the Ukrainian Black-and-White diary breed, but they are almost non-existent in Holsteins. The genetic similarity of the herd UBPD15 and Holstein increased by ΔI = 0,085, and the genetic distance between the herds of the UBPD increased by ΔD = 0,085 for 5 years. The comparison of the allele spectrum of Holstein and the Ukrainian Black-and-White diary breed shows both the accumulation and the elimination of alleles associated with high productivity. The largest consolidation is typical for alleles *24 (+ 6.75%) and *16 (+ 4.65%). The frequency of "milk" alleles *22 and *08 decreased, respectively, by 4.14 and 1.27%. Alleys, which cause low milk productivity, have the following dynamics: * 23 + 2.53%, *11 – 0.67 and *28 – 0.26. The accumulation of alleles *16 and *23 (7.18%) was found that are associated with predisposition to necrobacteriosis and elimination of *03 and *22 alleles (4.75%) that influence on this disease. Conclusions. It is determined that the role of alleles characteristic for Holstein is increasing in the the Ukrainian Black-and-White diary herd. Breeding measures for holsteinization are conducted in the right direction. There is accumulation of alleles associated with high milk productivity and predisposition to necrobacteriosis. It positively affects the growth of milk production and negatively affects the incidence of necrobacteriosis.

MILK PRODUCTION ON A MODERN DAIRY FARM

2021 ◽  
Vol 3 (90) ◽  
pp. 101-106
Author(s):  
А.I. Shilov ◽  
◽  
R.N. Lyashuk ◽  
Keyword(s):  
Milk Production ◽  
Dairy Farm

scholarly journals Economic and environmental consequences of technical and institutional change in Dutch dairy farming

1997 ◽  
Vol 45 (3) ◽  
pp. 361-379
Author(s):  
P.B.M. Berentsen ◽  
G.W.J. Giesen ◽  
J.A. Renkema
Keyword(s):  
Milk Production ◽  
Programming Model ◽  
Dairy Farm ◽  
Price Policy ◽  
Positive Influence ◽  
High Price ◽  
Negative Consequences ◽  
Nutrient Losses ◽  
Price Support ◽  
Labour Income

A linear programming model of a dairy farm was used to explore the future for different types of Dutch dairy farms under different scenarios. The scenarios are consistent sets of changing factors that are considered external at farm level. The factors included are technical, such as efficiency of milk production and feed production, or institutional, such as national environmental legislation and EU market and price policy. Income and nutrient losses for farms differing in intensity and size are generated for the base year 1992 and for the year 2005. The results show that technical change up to the year 2005 has a positive influence on labour income as well as on nutrient losses. The increase of labour income is higher for farms with a higher total milk production in the basis situation. The influence of environmental policy on labour income and environmental results is bigger for farms with a higher intensity, as these farms have to take more measures to comply with governmental policy. Replacement of the price support policy for milk by a 2-price system with a high price for a restricted amount of milk and a low price for an unrestricted amount of milk has negative consequences for labour income, especially for intensive farms.

scholarly journals Influence of complex action of probiotic and specific prophylaxis of associated mucosal diseases on some quantitative traits of dairy cattle performance

2020 ◽  
Vol 22 (97) ◽  
pp. 79-87
Author(s):  
S. O. Sidashova ◽  
B. V. Gutyj ◽  
V. I. Khalak ◽  
O. G. Humeny
Keyword(s):  
Milk Production ◽  
Growth Parameters ◽  
Industrial Complex ◽  
Functional Evaluation ◽  
Maximum Increase ◽  
Acid Base Status ◽  
Complex Scheme ◽  
Positive Effect ◽  
Experimental Group ◽  
Dairy Breed

The article presents the results of studies of indicators of reaching the age of the first calving of repair heifers of the Ukrainian red dairy breed under the conditions of use of the complex scheme of specific immunoprophylaxis and preparation “Multibacterin veterinary suspension”.The research was conducted in the conditions of the industrial complex for milk production of Dolinskoye LLC, Odessa region. The subjects of the study were groups-analogues of breeding heifers and the firstborn of the genotype.The assessment of repair young growth indicators was performed taking into account the following indicators: age of fertile insemination, months; age of first calving, months; milk production for 100 and 305 days of the first lactation, kg. For the functional evaluation of the digestive status of animals used to determine the transit of feed, in % and the assessment of acid-base status of faeces, pH unit. The following indicators were investigated in the serum of repair calves of mating age: total protein, g/l; albumin, g/l; globulin, g/l; glucose, mmol/l; urea, mmol/l; alkaline phosphatase, units/l and liver enzymes (ALT and AST, units/l).The economic efficiency of the results of the studies was calculated according to the indicator “average hope of one cow for 305 days of the first lactation, kg”. It was found that, due to the positive simultaneous effect of probiotic protection of the intestinal mucous membranes, repair heifers showed a higher growth and development rate and the first calving had 28.07 months, which is 2.31 months (8.45 %) earlier than in control (P < 0.001).The optimization of the technology of growing heifers for the use in the scheme of specific immunoprophylaxis of a probiotic drug – immunomodulator, which feed use had a prolonged positive effect not only on the growth parameters of young animals, but also on the increase of milk productivity per first lactation was experimentally proved.Calculations of cost-effectiveness of research results showed that the maximum increase in production (+ 9.10 %) was obtained from the firstborn of the experimental group born to cows mothers older than two lactations, where the scheme of specific prevention of associated diseases was carried out for repair heifers with previous normophilic laceration probiotic feed preparation.

scholarly journals 110 Managing Feed Efficiency to Improve Dairy Farm Margin

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 20-20
Author(s):  
Micheal J Brouk
Keyword(s):  
Milk Production ◽  
Production Cost ◽  
Dairy Farm ◽  
Animal Reproduction ◽  
High Feed ◽  
Efficiency Factors ◽  
Feed Costs ◽  
The Cost ◽  
The Impact ◽  
Made In

Abstract Dairy farm margin has continued to be a challenge for the dairy industry. Several years of challenging milk prices with limited relief from high feed costs and increasing production cost have continued to erode the net margin of US dairy farms. As dairy producers continue to operate in a challenging economic environment, discoveries are being made in various farm efficiencies to improve farm margin. Increased management intensity on all aspects of the dairy farm is resulting in the discover of and improvement of many individual efficiency factors. Key areas of economic efficiency include feed, animal reproduction, replacement animals, labor and resource allocation. Often the answer to improved efficiency involves more than just reduced production cost, but also in the improvement of production to reduce the cost per unit of milk produced. Identifying and focusing on the important factors that can improve overall farm efficiency will enable producers to weather the economic challenges. For dairy producers, one of the complications is the biology of the dairy cow and understanding how to utilize the biology correctly for improved efficiency of milk production. Improved efficiency of milk production requires attention to details in many areas of the dairy. Identifying the correct areas of deficiencies, establishing corrective plans of action and then careful evaluation of the impact of changes are all key to the overall success of improving dairy farm margins and efficiencies.

scholarly journals Foreign experience in the development of dairy cattle and directions of its use in domestic practice

2020 ◽  
pp. 36-46
Author(s):  
S. Shupyk
Keyword(s):  
Dairy Cattle ◽  
Milk Production ◽  
Financial Incentives ◽  
Dairy Farm ◽  
Raw Milk ◽  
Government Support ◽  
Small Scale ◽  
State Support ◽  
The Government ◽  
Small Scale Farmers

The article analyzes the support for the US market, where the government has allocated almost $ 22.2 billion for the development of dairy cattle. direct and indirect subsidies to the country's dairy sector (35.02 c/l), which is equivalent to 73% of farmers' milk sales, showed relatively high domestic support, export subsidies, conservation programs, risk management programs, disaster relief programs, loan programs, crop insurance, livestock support. Surveys to support the Indian market, which ranks second in the world in raw milk production (9.5%), have shown that almost 80% of small-scale farmers are small-scale farmers. Milk collection is carried out by 130 thousand dairy cooperatives. NABARD (National Bank for Agriculture and Rural Development) under DEDS, provides for subsidies of up to 25% of costs. China is investing heavily in the construction of large dairy farms and livestock complexes with up to 100,000 cows. The Australian market produces 9.3 million tonnes of milk, of which 36% is exported and is the world's fourth exporter of dairy products (6% of the world market). Australia's dairy cattle are characterized by a small amount of direct government support. During 2015-2016, agriculture received financial and commercial assistance over $ 147 million. US in the form of payments to farms. It has been established that price forecasting plays an important role in regulating the milk market in Australia, on the basis of which the profile Ministry, taking into account world prices, generates milk price indices. Analysis of milk production in Switzerland has shown that it remains highly subsidized. In 2013, state support for milk producers amounted to CHF 1.8 billion, incl. direct subsidies are estimated at 1.5 billion Swiss francs, which is 61 thousand Swiss francs per dairy farm, or 0.41 Swiss francs per 1 liter of milk. The state support system for dairy cattle in Canada has been found to include the following instruments: import tariffs that restrict dairy imports; minimum guaranteed prices for raw milk that are set at the maximum amount of milk sold to the dairies within the quota; a system of direct payments to farmers for milk production within the quota. The amount of direct payments per 1 liter of milk is set annually by the government. In order to support Canadian producers in technological modernization aimed at improving the efficiency of milk production, a dairy farm investment program (DFIP) is implemented with state support of $ 250 million. USA According to the Organization for Economic Co-operation and Development (OECD) in Iceland, Japan, Norway and Switzerland, the level of support for dairy producers exceeds on average 70% of the gross income of farmers, in Canada, the EU, Hungary, Korea and the USA the amount of support is 40-55%. An analysis of the support for the development of dairy cattle in the EU countries showed that the following instruments are allocated for these purposes: production restrictions (milk production quotas); government interventions and storage; Establishment of product sales regulations / regulations; the dairy package (including regulating contractual relations in the dairy sector); foreign trade (import regulations, export subsidies); government subsidies. It is found that the main factor that increases the profitability of dairy production in developed countries is the improvement of quality and differentiation of the range. Major factors contributing to the successful development of dairy cattle are increased government support and economical use of resources. Also used are a set of financial incentives, including reducing the tax burden. Key words: Livestock, milk market, domestic support, development programs, cooperation, financial incentives, subsidies, import tariffs, quotas.

scholarly journals Characteristics of the productive-economic indicators of cows of Yaroslavl breed of different genotypes

2020 ◽  
pp. 43-52
Author(s):  
N. Kosyachenko ◽  
Marina Abramova ◽  
M. Lapina
Keyword(s):  
Protein Content ◽  
Milk Production ◽  
Milk Yield ◽  
Milk Fat ◽  
Live Weight ◽  
Practical Significance ◽  
Holstein Breed ◽  
Blood Fraction ◽  
The Impact ◽  
The Relationship

Abstract. Aim. The study of the influence of crossbriding on the growth and development of heifers and subsequent productive and reproductive qualities of cows on the first lactation. Methods. Using statistical methods, correlation analysis and ANOVA for evaluated genetic indicators of economic-valuable traits of dairy cattle. In particular was studied live weight of heifers from birth to 18 months, first insemination age and first fecundation age, live weight at fecundation, frequency of insemination, first calving age, days open, live weight at first lactation, milk yield for 305 days (kg), fat (%, kg) and protein (%, kg) in milk. Results. Relationship between productive indicators and the genotype of the animal is established. When assessing the strength of the influence of the factor «blood on the Holstein breed» it was found that the greatest impact can be traced at the age of 6 and 18 months, and is respectively 12.7 % and 17.1 %.The reproductive qualities of the first-calf cows decreased with the increase percent of blood in the Holstein breed. Evaluation of the impact of crossbreeding on milk production at first lactation has revealed significant strong influence on milk yield for 305 days of first lactation, and related signs the amount of milk fat and protein. According to qualitative indicators, the low influence of the Holstein blood fraction was found, while to a greater extent on the fat content than on the protein content in milk. Evaluation of phenotypic and genotypic correlations of milk yield and quality components of milk revealed average negative phenotypic and low negative genotypic correlation in all groups. The exception was in heifers of Yaroslavl breed with percent of Holstein blood less than 50 %, in which the relationship of yield x protein was positive. The relationship between milk yield and fat and protein content in milk has the opposite moderate character and strength. Practical significance. Studies was established that breeding of animals of Holstein and Yaroslavl breeds in one herd allows to receive an optimum ratio of milk production with optimal percentage fat and protein. For this herd among animals of the improved genotypes of the Yaroslavl breed, the use of genotypes with a percent of blood in the Holstein breed from 75.1 % to 87.6 % is optimal, which should be taken into account when selecting bulls to the breeding program.

scholarly journals Prevalence of Failure of Passive Transfer of Immunity in Dairy Calves in the Czech Republic

2019 ◽  
Vol 67 (1) ◽  
pp. 163-172 ◽  
Author(s):  
Stanislav Staněk ◽  
Eliška Nejedlá ◽  
Petr Fleischer ◽  
Alena Pechová ◽  
Soňa Šlosárková
Keyword(s):  
Reference Method ◽  
Herd Size ◽  
Passive Transfer ◽  
Dairy Calves ◽  
Dairy Herds ◽  
Serum Samples ◽  
Average Value ◽  
Holstein Breed ◽  
Newborn Calves ◽  
Autumn And Winter

Prevalence of failure of passive transfer (FPT) of immunity remains relatively high worldwide. The aim of this study was to estimate the FPT prevalence in Czech dairy calves and to evaluate the selected factors – breed, herd size, sex of calves, single versus twin births and the influence of the season of birth. A total of 1,175 serum samples were taken from calves of Czech Fleckvieh and Holstein breed from 33 herds between October 2015 and October 2017. Serum IgG concentration was determined by reference method for IgG determination – radial immunodiffusion. Statistical evaluation was performed by Kruskal‑Wallis test. The concentration of IgG ranged from 1.5 to 46.6 g/L with average value 13.7 g/L and was significantly influenced by breed, size of the herd and season. Using the criterion IgG < 10 g/L, it was found that 34.6 % of calves had FPT. The prevalence of FPT by breed was 42.9 % vs. 24.2 % (Czech Fleckvieh vs. Holstein), by size of the herd 45.0, 44.4, 25.5 and 22.0 % (< 200, 200–399, 400–599 and ≥ 600 cows per herd, respectively) and by season 25.3, 34.6, 29.9 and 52.5 % (spring, summer, autumn and winter, respectively). The sex of calves was not found to be a statistically significant factor. The study in newborn calves showed that FPT is still an important problem in Czech dairy herds, especially in the Czech Fleckvieh breed. In smaller herds and especially in the winter, the prevalence of FPT was very high.

Sign in / Sign up

Export Citation Format

Share Document