scholarly journals PRODUCTIVE QUALITIES OF COWS OF DIFFERENT BREEDING GROUPS OF THE BUKOVINSKY FACTORY OF THE UKRAINIAN RED-AND-WHITE DAIRY BREED

2020 ◽  
Vol 59 ◽  
pp. 60-66
Author(s):  
O. I. Liubynskyi ◽  
R. V. Kasprov
Keyword(s):  
Protein Content ◽  
Milk Yield ◽  
Milk Fat ◽  
Correlation Coefficients ◽  
Live Weight ◽  
Fat Content ◽  
Positive Correlation ◽  
Breeding Group ◽  
The Difference ◽  
Dairy Breed

The studies were conducted on the materials of the breeding record of the breeding plant of JSC "Mirne" of Chernivtsi region - the basic farm of the Bukovyna factory type of the Ukrainian red-speckled dairy breed. 360 cows were selected for analysis, based on live weight, yields, fat and protein content of milk, total milk fat and protein content. The intensification of dairy cattle breeding necessitates the systematic evaluation of animals in herds and populations on the basis of economically useful traits. Analysis of the productive qualities of the cows of the different breeding groups showed that, by live weight, milk yield, milk fat and protein content, the two-breed (II breeding group) animals were better than the three-breed (I breeding group). The difference for the first lactation was 11.2; 32.9; 1.5; 1.0 kg respectively. In cows with the second lactation, the pattern remained, the difference was 22.2; 395.8; 15.8; 13.1 kg respectively, and for the third lactation – 31.4; 124.3; 4.8; 4.2 kg. The fat and protein content of milk varied between 3.88–3.89% and 3.33–3.34%, respectively. It should be noted that in cows of both groups there was a decrease in milk milk yield with increasing number of lactations.An evaluation of the productive qualities of the first-born cows of the different lines showed that Marshall's first-borns were better in live weight, milk yield, milk fat and protein, although they were inferior to other lines in terms of fat and protein content. In the firstborn of the Hanover Red line, the estimated values were lower than in animals of other lines, in particular – by live weight by 11.4 kg, milk yield by 1115.2 kg, milk fat by 44.1 kg, milk protein by 37.2 kg (Chif line), by 5.4; 1336.5; 52.7; 45.2 kg (Starbuck line) and 14.7; 1465; 55.1; 48.3 kg (Marshall Line).The effectiveness of breeding for increasing dairy productivity of cows depends on the efficiency of selection and selection of animals, taking into account the phenotypic and genetic correlation between economically beneficial traits. It was found that the highest positive values of correlation coefficients were observed in the cows of the studied groups between milk yield and protein content in the context of all lactations – 1st breeding group (r = 0,12–0,25), 2 nd breeding group (r = 0.19–0.3). In the cows of the first breeding group for the first and second lactations revealed not high but positive correlation of milk yield with live weight (r = 0.33–0.49). In the cows of the second breeding group for the first and second lactation positive correlation with milk fat content was found.The first positive cows of different lines showed the highest positive values of the correlation coefficients between milking and protein content (r = 0.19–0.43). There was also a low positive correlation of milk yield with live weight in the firstborn of all evaluated lines (r = 0.03–0.09), as well as milk fat content in cows of Starbuck and Marshall lines.Conclusions. 1. By live weight, milk yield, milk fat and protein content, two-bovine cows of the Bukovyna factory type of Ukrainian red-speckled dairy breed were better than three-born. The fat and protein content of milk varied between 3.88–3.89% and 3.33–3.34%, respectively. In cows of both groups there was a decrease in milk yield with increasing number of lactations.2. By live weight, milk yield, milk fat and protein content, Marshall Line firsts were better, although they were inferior to other lines in terms of fat and protein content. In the firstborn of the Hanover Red line, the estimates were lower than in other line animals.3. The highest positive values of correlation coefficients were observed between milk yield and protein content in the context of all lactations in the cows of Bukovyna factory type of Ukrainian red-rippled dairy breed. In two breeds of cows for the first and second lactation revealed not high but positive correlation of milk yield with live weight, and in three breeds for the first and second lactation positive correlation of milk yield with fat content.

Milk productivity of the cows of Holstein and Simmental breeds in environment of the Novosibirsk region

2020 ◽  
pp. 41-49 ◽  
Author(s):  
A. Zheltikov ◽  
N. Kostomakhin ◽  
D. Adushinov ◽  
O. Zaiko ◽  
V. Dementev ◽  
...  
Keyword(s):  
Protein Content ◽  
Milk Yield ◽  
Milk Fat ◽  
Correlation Coefficients ◽  
Live Weight ◽  
Fat Content ◽  
Milk Productivity ◽  
Holstein Breed ◽  
Novosibirsk Region ◽  
Daily Milk Yield

The characteristic of milk productivity of cows of Holstein and Simmental breeds in LLC “Sibirskaya Niva” in the Maslyaninsky district in the Novosibirsk region has been given. It has been revealed that under the natural and climatic environments of the Western Siberia, when creating favorable conditions for feeding and housing for cows of Holstein and Simmental breeds have sufficiently high milk productivity. It has been found that Holstein first-calf heifers surpassed their Simmental herdmates by 959 kg in milk yield for the first 305 days of lactation under the same conditions of housing and feeding, by 3,1 kg in daily milk yield, by 38,2 kg in milk fat yield, and by 28,3 kg in milk protein yield (P < 0,001). There were no statistically significant differences between animals of Holstein and Simmental breeds in terms of fat and protein content in milk, which amounted to 3,94 and 2,96 % in Holstein breed and 3,97 and 2,98 % in Simmental breed, respectively. Both breeds have shown high milk productivity during the first 3 lactations. Thus, the milk yield of Holstein cows for the first 3 lactation was 6475–9290 kg, Simmental cows it was 5516–7680 kg, fat content was 3,93–3,99 and 3,96–3,97 %, respectively. The protein content in the milk of cows of both breeds did not exceed 3,0 %. High variability has been found in milk yield, yield of milk fat and protein, the coefficient of milk content and duration of lactation, the lowest in the content of protein and fat in milk and live weight. The correlation coefficients between the fat and protein content in milk were generally positive, but did not exceed 0,28. Therefore, breeding in the herd of cows in LLC “Sibirskaya Niva” have to be conducted not only by fat content, but also by protein content in milk.

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%).

scholarly journals RELATIONSHIP OF MILK PRODUCTIVITY OF COWS WITH LIVE WEIGHT AND AGE AT THE FIRST INSEMINATION

2017 ◽  
Vol 54 ◽  
pp. 45-50
Author(s):  
G. D. Ilyashenko
Keyword(s):  
Correlation Analysis ◽  
Milk Production ◽  
Milk Yield ◽  
Milk Fat ◽  
Live Weight ◽  
Milk Productivity ◽  
Fat Yield ◽  
The Difference ◽  
Dairy Breed ◽  
Intensive Growth

The efficiency of the use of cattle of one or another breed is determined both by the level of milk productivity and the ability of the cattle to reproduce. At the same time, the future reproductive capacity, milk yield and duration of economic use to a large extent depends on the live weight and age when heifers insemination. The purpose of research. Study the effect of live weight and age at the first insemination on the milk productivity cows of Ukrainian red dairy breed. Methods. The research was carried out in the breeding plant of the state enterprise "Elite" of the Kirovograd state agricultural research station of NAAS on 697 cows of Ukrainian red dairy breeds, which were found during 2004–2014. Milk productivity of cows and their live weight and age at the first insemination were investigated according to the materials of the primary zootechnical and pedigree records. The degree of connection of live weight and age at the first insemination with milk productivity was estimated by correlation analysis. One-factor dispersion analysis determined the level of influence of the age of the first insemination and live weight on the productivity of cows. The calculations were made using methods of mathematical statistics using the software package "STATISTICA-6.1". Results of research. By the analysis of milk production on experimental cows, determined, that its level depends on the live weight of animals at the first insemination. Therefore, cows with live weight at the first insemination was 420–439 kg, dominated by mercy unique live weight of 380 kg in the first lactation at 244 kg (6242 vs 5998 kg), td = 1,96 for the third – 1069 kg (7465 vs 6396 kg), td = 2,37 by best lactation 498 kg (7916 vs 7418 kg), td = 2,03, significance level for all lactation (P < 0,05). To the milk fat, accordingly, the predominance was 13.2 kg (260,2 vs 247,0 kg), 22,9 (309,5 vs 286,6 kg) and 21,0 kg (325,1 vs 304,1 kg), the difference is close to the true values. The peers with a live weight of 400–419 kg and 440 kg and more also yielded in the first milk yield. The difference the milk I, III and the best lactation was 72 kg, 219 kg and 91 161 kg, 674, 589 kg for milk fat yield 5 kg, 10.3, 6.1 kg and 11.5 kg, 28.8, 19.5 kg, respectively. Due to the lesser number of animals, the vast majority of values did not reach a reliable level. Studies of milk productivity of cows, depending on the age of the first insemination, showed that its cow was the highest, which were counted at the age of 455 days. The lowest rates of dairy productivity were the animals that were fertilized at the age of 606 or more days. Correlation analysis found the highly reliable of feedback age insemination of cows milk yield in the first three lactation (-0,25 ... -0,37). Similar patterns of feedback for somewhat lower correlation coefficients are noted with the release of milk fat (-0,23 ... -0,33). Coherence of live weight at the I insemination and follow-on milk production was significantly lower (compared with age insemination) in absolute value, for only a certain level of first lactation milk yield and milk fat yield (P < 0,05). The significant influence of the investigated factors on milk yield of cows is established. Thus, by milk yield and milk fat and protein for 305 days of lactation cows power of influence age of first insemination exceeded 50%, the fat and protein in milk index of potency is 32 and 30% by high-confidence values for milk yield and yield of milk protein and fat . Somewhat lower than 20 to 33%, the effect of live weight on the first insemination was shown on the performance of cows. Сonclusion. The heifers of the Ukrainian Red dairy breed in conditions of the Central region of Ukraine advisable to fertilize at the age of 455 days, or 14,5–15 months, when they reach the living weight of 420–439 kg. The revealed feedback of the inseminative age and milk productivity can be explained by more intensive growth, better development and economic rapidity of the previously diced heifers and its should lead to intensive rearing of young animals. Determined, that the force of age-old influence of the first insemination on the lactic productivity of the cows exceeds 50%, the live weight reaches from 20 to 33%. Discovered tendency also confirms the expediency of intensive growth of repair heifers.

scholarly journals Milk productivity and reproductive ability of ukrainian black-spotted dairy breed cows of different type of constitution

2017 ◽  
Vol 19 (74) ◽  
Author(s):  
Z. Y. Shcherbatyj ◽  
P. V. Bodnar ◽  
Y. G. Kropyvka
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Milk Fat ◽  
Correlation Coefficients ◽  
Fat Content ◽  
Reproductive Capacity ◽  
Reproductive Ability ◽  
Dairy Cattle Breeding ◽  
Constitution Type ◽  
Dairy Breed

The analysis was done on milk production and the reproductive ability of cows of Ukrainian Black-Spotted dairy breed cows of different types of constitution under conditions of breeding farm «Yamnytsya» Tysmenytsya district, Ivano-Frankivsk region. Determining the type of constitution of animals was carried out by mass-metric coefficient, indicator of which were differentiated from its deviation from the arithmetic mean share at 0.43 of sigma (σ), three types of constitution: tight, intermediate and loose. It is established that the milk yield and reproducible ability of cows depended on the type of constitution. For the first, second, third and better lactation the highest milk yield and the amount of milk fat were observed cows of dense type of constitution, and what prevailed animals of intermediate and loose types in 428.0–1318.2 and 11.9–49.2 kg respectively. The largest share of influence of the type constitution on yield and the amount of butterfat in the first lactation (18.51 and 18.42%) and on the fat content in milk for the second and third lactation (10.98 and 17.11%). The correlation coefficients between the type of constitution and milk yield, depending on lactation, were in the range 0.047–0.410, fat content in milk – -0.098– -0.423 and the number of milk fat – -0.032– +0.403. The highest connection between the type of constitution and milk yield milk yield and quantity of milk fat were observed in the first lactation, and in the second, the third and best lactation – between the type of constitution and fat content in milk. Lower age of first calving cows were characterized cows of dense type of constitution, which conceded intermediate and loose type. For the duration of service- and between calving period, the coefficient of reproductive capacity, calves output per 100 cows, index of heifers insemination and firstborn cows, animals of dense type constitution conceded the intermediate and loose types. High and reliable (P < 0.01–0.001) influence of constitution type had on the duration and service-and between-calving period, the coefficient of reproductive capacity, calves output per 100 cows, and index of heifers insemination – within 6.03–7.09%, and the smallest - on the duration of gestation of heifers and firstborn cows – 0.66 and 0.41% respectively. The highest positive and highly probable correlation coefficients were observed between the type of constitution of animals and the duration of their service- and between calving period (0.283 and 0.278) and negative, but probable links – between the type of constitution and coefficient of reproductive capacity (-0.271) and calves output per 100 cows (-0.269). Available communication indicates the possibility and expediency of dairy cattle breeding by mass-metric coefficient, that will promote simultaneous enhancement of their milk production at selection by external-constitutional type.

scholarly journals The influence of living mass of the ukrainian black and white dairy breed cells in various everyday periods on their more dairy productivity

2018 ◽  
Vol 20 (84) ◽  
Author(s):  
L. V. Ferenz ◽  
M. I. Polylikh ◽  
G. I. Ilnitskaya
Keyword(s):  
Milk Fat ◽  
Correlation Coefficients ◽  
Live Weight ◽  
Fat Content ◽  
Individual Growth ◽  
Black And White ◽  
Growing Period ◽  
The Third ◽  
Carpathian Region ◽  
The Difference

The connection of live weight of cows of Ukrainian black-and-white milk breed in the conditions of the Carpathian region of Lviv region in different ages with their subsequent milk productivity is established. It was investigated that live weight during the period of individual growth and development of animals has a significant impact on hopes, the content of fat in milk and the amount of milk fat. The difference in liveliness between cows with live weight at the first insemination to 300 and 361–380 kg for the first lactation was 249.3, for the second – 500.7 (P < 0.002), for the third – 97.0 kg, and for the highest – 405.5 kg (P < 0.01). Between cows with live weight at the first insemination of 361–380 and 401–420 kg, this difference was 185.1, 319.9 (P < 0.05), 38.7 and 265.3 kg respectively (P < 0.05). According to the results of the research, it can be stated that the optimum live weight during the period of raising cows at 6 months of age is a live weight of 160–180 kg, at 12 months of age it is 260–280 kg and the highest rates are obtained from cows that were growing at 18-months of age had a live weight of 360–380 kg. From the results of our research, it follows that for the Ukrainian black-and-white milk breed in the conditions of the Carpathian region of Lviv, the optimum live weight at the first insemination is 361–380 kg. The share of influence on milk production of live weight of cows during their growing period: at 6 months of age on hopes – 13.53–27.56%, on the fat content in milk – 15.18–39.70 and on the amount of milk fat 11.89–39.41%; at 12 months of age – respectively 24.65–37.84, 23.45–33.0 and 23.37–35.17%; in the 18-month – 27.38–40.93, 29.12–33.23 and 25.81–39.10%, and at the first insemination – 21.59–40.08, 31.32–39.99 and 21.52–39.88% at P < 0.05–0.001. The probable correlation coefficients between the live weight of cows at 6 months of age and the reliance on second, third and highest lactation were 0.163–0.2253 and between live weight and fat content in milk – 0.110–0.233, between live weight at 12 months of age and the expectation for the second, the third and highest lactation – 0.233–0.240 and between the live weight and the amount of milk fat – 0.127–0.202, at the age of 18 months and for the second, third and highest lactation – 0.246–0.337 and between the live weight and the amount of milk fat – 0.116–0.308, and at the first insemination – 0.135–0.195 and 0.118–0.188 respectively at P < 0.005 – P < 0.001.

scholarly journals PHENOTYPE FEATURES APPEARANCE OF DAIRY PRODUCTIVITY OF DIFFERENT UKRAINIAN DAIRY BLACK-AND-WHITE BREED COWS GENOTYPES

2019 ◽  
Vol 58 ◽  
pp. 33-40 ◽  
Author(s):  
A. R. Pendyuk ◽  
V. V. Fedorovych ◽  
N. P. Mazur
Keyword(s):  
Dairy Cattle ◽  
Milk Yield ◽  
Milk Fat ◽  
Correlation Coefficients ◽  
Fat Content ◽  
Milk Productivity ◽  
Black And White ◽  
Holstein Breed ◽  
Dairy Breed ◽  
A Share

The main task of breeding in dairy cattle breeding is to raise dairy productivity of cows. Improvement of productive qualities of domestic dairy cattle with the use of Holstein breeders of high breeding value led to serious disadvantages, including impairment of animal health, reproductive capacity and quality of milk. Therefore, the purpose of our research was to examine the milk productivity of cows of different genotypes of the Ukrainian Black-and-White dairy breed and ascertain the relationship between quantitative and qualitative indicators of milk. Research conducted at agricultural limited liability company "Lishche" Lutsk district of Volyn region on cows of different genotypes of the Ukrainian Black-and-White dairy breed. 5 groups of animals were formed: I − cows with a proportion of Holstein breed 75% or less, II − with a share Holstein heredity 75.1–81.25%, III − Holstein heredity share 81.26–87.50%, ІV − with a share of the heredity of the Holstein 87.51–93.75% and V − with a share of the heredity of the Holstein more than 93.75%. Evaluation of milk productivity was carried out by milk yield, fat content in milk and the amount of milk fat for the first, second, third and highest lactations according to the data of zootechnical accounting. It was found that the largest number of animals under control (33.7%) was with the relative share of Holstein heredity of 81.26–87.50%, and the lowest (9.3%) was with relative share of the Holstein breed's heredity more than 93.75%. Analysis of the level of milk yield of cows of different genotypes showed that the increase of Holstein heredity increases milk yields, however, significantly reduces the fat content of milk. If the animals have a share of Holstein heredity up to 75% the milk yields was 5154, and the amount of milk fat − 199.7 kg, and cows with hereditary of 75.10–81.25% showed figures increased by 16.4 and 15.5%, with Holstein heredity 81.26–87.50% by 23.3 and 20.8%, Holstein heredity 87.51–93.75% for 26.1 and 23.2% and with Holstein heredity more than 93.75% for 34.8 and 31.4%, and fat content in milk, on the contrary, decreased, depending on the genotype of animals, by 1.6–2.3%. In all in the above cases, these changes were highly significant (P < 0.001). The effectiveness of breeding on increasing the milk productivity of cows depends on the efficiency of selection and selection of animals, taking into account the phenotypic and genetic correlation between economically useful features. It was found that the studied cows of all genotypes had highest highly reliable (P < 0.001) positive values of correlation coefficients between milk yield and milk fat (Table 2). These features are the most predicted because strong relationship between them (r = 0.912–0.987). There was also observed direct positive ligament (r = 0.039–0.533, P < 0.05–0.001) between fat content in milk and milk fat content, and mostly weak, and only in some cases correlation coefficients had average values. The cows of the studied genotypes had the lowest and for the most part unreliable values of relative variability by the milk yields and fat content milk. The heifers with conditional share of Holstein heredity, more than 75% had negative and weak relationship features, and the older cows were diversified from weak to average values. One of the reliable criteria for determining the level of heredity of features is the coefficient of frequency, which indicates their heredity stability in age. Coefficients of age-related frequency of milk yield, fat content of milk and the highest milk fat content of cows with a conditional share of Holstein heredity of up to 75% had indicating a higher degree of heredity of these features compared to high half-bred cows. With the increasing of heredity of the Holstein breed the genotype of controlled animals values were decreasing for the most part. The most significant and reliable (P < 0.001) genotype of animals affected milk yields (13.3–18.1% of the total variability of this feature), less – the fat content of milk (9.3–13.2% (P < 0.001) and the amount of milk fat (6.6–14.1% (P < 0.001), with the highest genotype influence on the studied features indicated in the first lactation.

Formation of bull-producing groups of cows in Ayrshire breed using genomically evaluated candidates

2022 ◽  
pp. 23-28
Author(s):  
A. Bolgov ◽  
N. Grishina ◽  
S. Shterkel ◽  
I. Komlyk
Keyword(s):  
Protein Content ◽  
Milk Yield ◽  
Milk Fat ◽  
Dairy Farm ◽  
Live Weight ◽  
Fat Content ◽  
Ayrshire Breed ◽  
Productivity Indicators ◽  
Protein Milk

Purpose: Assessment of the quality of the well-producing groups, the productivity of candidates for the first lactation, the possibility of using genomically estimated cows to increase the parameters of mothers of future bulls, to analyze the quality of the offspring of bulls of various origins.Materials and methods. Research was performed on the basis of breeding plants Karelia Megrega (1455 cows) and Ilinskoe (1200 cows). Analyzed the productivity of bob-producing groups isolated on trivials. 66 Genomically estimated flaws were delivered from Finland after calving for milk productivity for the first lactation with local peers. In assessing the quality of the offspring of producers of different origin, the productivity of 1441 of the daughter of imported bulls and 620 daughters of domestic bulls took place. The degree of differences was assessed by the results of biometric processing of indicators.Results. At the Ilyinskoye dairy farm, the milk yield for lactation of cows of the bull-producing group is 11977 kg of milk with a fat content of 4.33%, protein content of 3.22%. There are 11119 kg of milk at the Megrega farm, 4.42% and 3.23%, respectively. A significant number of individuals (14.7-19.8%) with a milk yield above 9,000 kg of milk, which are a source of replenishment of bull-producing groups, were identified at breeding farms among the first heifers. The possibility of forming and improving the quality of bull-producing groups of cows at the expense of their own livestock is noted, provided that the factors of feeding and keeping animals, increasing the fat content and protein content of milk are optimized.Comparison of productivity indicators of imported "genomic" cows with local peers gave mixed results. At the Ilyinskoye farm, "genomic" cows significantly outperformed subjects of conventional breeding in all indicators: milk yield by 796-903 kg of milk, fat content by 0.27%, protein content by 0.09-0.06%, fat production by 59.4-63.8 kg, protein production by 33.9-34.8 kg, live weight by more thanAt the Megrega farm, in terms of fat content and production, "genomic" individuals also significantly outperformed local peers, and in milk yield and protein content, the differences were unreliable. Genomic evaluation of animals and the involvement of "genomic" cows can contribute to the formation of better groups of mothers of future bulls, especially to solve the most urgent problem of increasing fat and protein milk.Conclusion. In the conditions of large dairy breeding complexes with the technology of loose maintenance, it is advisable to use a system for placing groups of bull mothers in comfortable conditions in special rooms, including individual service.

scholarly journals INTERDEPENDENCE OF COMPLEX GENOTYPES OF ALFA-LACTALBUMIN AND BETA-LACTOGLOBULIN WITH COMPOSITION AND TECHNOLOGICAL PROPERTIES OF MILK OF UKRAINIAN BLACK-AND-WHITE DAIRY CATTLE

2018 ◽  
Vol 51 ◽  
pp. 124-131
Author(s):  
О. P. Plivachuk ◽  
T. M. Dyman
Keyword(s):  
Dairy Cattle ◽  
Protein Content ◽  
Milk Yield ◽  
Heat Stability ◽  
Fat Content ◽  
Black And White ◽  
The Difference ◽  
Solids Content ◽  
Beta Lactoglobulin ◽  
Dairy Breed

The objective of this work was to study the effect of phenotypic combination of genetic variants α-LA and β-LG on the content of technologically and nutritionally important components of milk in cows of Ukrainian Black-and-White Dairy breed. Method PCR-RFLP was used to identify cow’s genotypes on the indicated genes. Milk yield was calculated based on the results of monthly control milking. It has been determined such indices of cow’s milk: fat content, protein content, total solids content, milk solids non-fat (MSNF) content, lactose content, casein content, casein number, milk density, milk rennet ability, heat stability (alcohol number) of milk. Statistical analysis was carried out using program Statistica 6.0. The study of genetic structure of the herd of Ukrainian Black-and-White Dairy cattle showed the high level of polymorphism on α-LA and β-LG genes. 6 genotypes were identified. Genetic structure of the herd on two genes simultaneously was determined. 9 complex genotypes were revealed. Phenotypic variants α-LA АВ/β-LG АВ, α-LAАА/β-LG АА and α-LAАВ/β-LG АА had the highest frequency – 26, 21,5and 14 % respectively. Frequencies of remaining genotypes were not higher than 10 %. The highest milk yield (5617 kg) was received from cows with genotype α-LA ВВ/β-LG АА. The percentage of these animals in the herd was only 7,5 %. The lowest milk yield (5367 kg) was fixed for the group of animals with complex genotypeα-LA АА/β-LG ВВ. The frequency of this genotype was 7 %. Three the most distributed complex genotypes (61,5 %) characterized by medium features of milk yield. Cows with genotypes α-LAАВ/β-LGВВ had the highest indices of fat content (3,93 %). The percentage of these animals in the herd was 5 %. The difference between cows’ groups with the highest and the lowest indices of fat content was 0,14% (td=2,5; p<0,05). Cows with genotypes α-LAАВ/β-LG АА had the highest protein content. Their percentage in the herd was 14 %. The difference between cows’ groups with highest and lowest indices of protein content was 0,06 % (td=1,1; p<0,05). The highest indices of casein content and casein number (2,42 % and 78,3 % respectively) were observed in animals with complex genotypes α-LAВВ/β-LG АВ andα-LAВВ/β-LGВВ, their frequency in the studied herd was 11 %. The difference between cows’ groups with highest and lowest above indicators was 0,05 % (td=1,8; p<0,05) and 3 % (td=2,38; p<0,001) respectively. Thus, milk from 11 % of cows of the studied herd of Ukrainian Black-and-White Dairy breed complied with the requirements for cheese manufacture better. Indicator of rennet ability confirmed this. The lowest time of milk coagulation (rennet ability) we observed in milk from cows with complex genotype α-LAВВ/β-LGВВ – 27,7 min. We can assume that expression of alleles B of α-LA and β-LG in this phenotypic combination determines such desirable properties for cheese making. At the same time, milk from cows with complex genotypes α-LAВВ/β-LG АВ and α-LAВВ/β-LGВВ had the worst indices of heat stability, its alcohol number was 2,17 ml. High heat stability of milk was determined by expression of A allele of genes α-LA and β-LG in phenotypic combination α-LA/β-LG. Milk from cows with genotype α-LA АВ/β-LG АВ had the highest lactose content (4,53 %). The difference between cows’ groups with highest and lowest indices of lactose content was 0,06% (td=1,1; p<0,05). Significant differences between the cows of different complex genotypes were not found for the total solids content. At the same time, some differences on MSNF content were observed. The highest indices (8,65 %) were revealed in groups of animals with genotypesα-LAАА/β-LG АА andα-LAВВ/β-LG АА, lowest (8,57 %) – with genotype α-LAАВ/β-LGВВ, but these differences were not statistically significant. The result presented here shows the relationship between the combination of alfa-lactalbumin and beta-lactoglobulin genetic variants in Ukrainian Black-and-White Dairy cattle and the productivity traits of animals, technological properties of their milk.

MODERN CONDITION AND PROSPECTS OF DEVELOPMENT OF THE UKRAINIAN WHITEHEAD BREED

2016 ◽  
Vol 52 ◽  
pp. 194-202
Author(s):  
S. L. Voitenko ◽  
L. V. Vishnevsky
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
Objective Assessment ◽  
Live Weight ◽  
Fat Content ◽  
Early Age ◽  
Average Value ◽  
The Future ◽  
Efficiency Of Selection ◽  
Selection Of

The article shows the state of Ukrainian Whiteheaded cattle, which includes distribution of cattle, the number of animals belonging to respective bloodlines, evaluation of young animals with live weight in the process of growing and milk production of cows during the first lactation. It reflects the historic development of the breed when it was colonism whiteheaded cattle, which turned into the original breed, undergone a significant expansion in livestock and increase of productivity, decreased in the number, was as basis for creation of Ukrainian Black-and-White dairy breed and now bred only in one breeding farm. Visual estimation of animal exterior showed good development of cows and calves and their belonging to the dairy type. In the vast majority the cows of the herd have a black suit, a white head with " glasses" around the eyes, white belly, udder, lower legs and brush of the tail. The youngsters aren’t consolidated by the exterior, and among them there are animals which are not typical for Ukrainian Whiteheaded breed. The young animals have some lag in live weight behind the breed standard [12] to 7 months’ age with exceeding of this trait in certain periods quite significantly in the future. It was established that selection of heifers on live weight will be effective at the early age (1-5 months), given the coefficient of variation of live weight – 22,63-30,21% and will not have a significant influence in the future. Milk yields of first-calf heifers vary considerably depending on the origin. The milk yield of first-calf heifers in the herd was 4238,5 kg on average, the heifers belonging to Mart 171 and Ozon 417 bloodlines had the best milk performance – 4483,1 and 4254,9 kg accordingly. The most aligned milk yield during the first lactation was in the cows belonging to Ozon 417 bloodline, the limits of the trait are 4128,5-4327,4 kg with the average value by the line 4254,9 kg. In contrast, the first-calf heifers of Ryezvyi 33 bloodline with average milk yield 4048,9 kg had limits of the trait 2199,3-4736,1 kg. Even greater range in cows’ milk yield during the first lactation R= 4939 kg (limits 1687 – 6626 kg) is characterized for the herd in general, it shows, on the one hand, the possibility of qualitative improvement of cows’ productivity due to selection on the investigated trait and lack of selection in the herd on the other hand. It was established that daughters of bull Chardash belonging to Ryezvyi 33 bloodline produced 4736,1 kg of milk for 305 days of the first lactation with fat content 3,6%, whereas Zlak’s descendants of the same line were characterized by the lowest milk yield for the first completed lactation – 2199,3 kg with fat content 3,7% and the average value by the line – 4048,9 kg of milk, fat content 3,6%. Similar variability of first-calf heifers’ milk yields, depending on the origin, is typical for other bloodlines of Ukrainian Whiteheaded breed. To increase milk productivity of Ukrainian Whiteheaded cows is recommended to repeat successful combinations of parental forms, and to preserve the breed – to carry out an objective assessment of animals by a range of traits, given the efficiency of selection of heifers on live weight at early age.

Effect of intravenous supplements of L-methionine on milk yield and composition in cows given silage-cereal diets

1982 ◽  
Vol 49 (1) ◽  
pp. 25-28 ◽  
Author(s):  
David G. Chamberlain ◽  
Phillip C. Thomas
Keyword(s):  
Protein Content ◽  
Milk Yield ◽  
Perennial Ryegrass ◽  
Milk Fat ◽  
Fat Content

SUMMARYEight cows in mid lactation and receiving a diet of perennial ryegrass silage and barley (70:30 on a DM basis) were given intravenous supplements of l-methionine (8 g/d). The methionine treatment had no significant effect on milk yield, protein content or lactose content, but increased milk fat content and yield by approximately 10% (P < 0·05).

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