scholarly journals Results of the application of the technology of genetic improvement of Simmental cattle population in Serbia

2006 ◽  
Vol 22 (1-2) ◽  
pp. 1-8 ◽  
Author(s):  
Milan Petrovic ◽  
Ljiljana Sretenovic ◽  
Vlada Pantelic ◽  
Stevica Aleksic ◽  
Branislav Miscevic ◽  
...  
Keyword(s):  
Milk Fat ◽  
Genetic Improvement ◽  
Mixed Model ◽  
Breeding Value ◽  
Production Traits ◽  
Cattle Population ◽  
Method Of Least Squares ◽  
General Average ◽  
Simmental Cattle ◽  
Calving Season

Results of production traits obtained from first calving cows and evaluation of the breeding value of bull sires of Simmental breed in Serbia. Data was analyzed using the method of least squares and for evaluation of bulls' breeding value mixed model of random sire effect (BLUP method). Based on obtained results it was established in statistical analysis that breeding region had highly significantly affected (P<0.01) the deviation of production traits from the general average. Considerable deviation from the general average was caused by the year and season of calving (P<0.05), and interaction of breeding region and calving season contributed to high variation in yield of milk and milk fat (P<0.01).

scholarly journals To the question of evaluating the efficiency of linear breeding in Simmental cattle breed different origin

2020 ◽  
Vol 197 (6) ◽  
pp. 49-57
Author(s):  
L. Ignat'eva ◽  
A. Konte ◽  
A. Sermyagin
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Russian Federation ◽  
Mixed Model ◽  
Breeding Value ◽  
Production Traits ◽  
Fat Percentage ◽  
Foreign Origin ◽  
Simmental Cattle ◽  
The Impact

Abstract. The purpose of the research – to study the impact of related foreign pedigree resources on the Russian population of Simmental cattle. Research Methods. Studies carried out on cows of Simmental breed of different linear origin and genotypes in five regions of Russian Federation: Voronezh, Oryol, Kursk, Belgorod regions and Altayskiy krai, the total number was 35147 cows. EBV estimates were calculated through RENUMF 90, REMLF 90 and BLUPF 90 programs. Evaluation of the components of the variants of genetic and paratypical nature was carried out using the method restricted maximum likelihood – REML. Results. It is established that the largest share for animals foreign origin are 60.7 %, including German-Austrian bloodlines 46.6 % and Holsteins – 14.1 %. 39.3 % of animals are the Russian origin, which 13.5 % representatives of German-Austrian bloodlines, 17.8 % are Holsteins and 8.0 % are from domestic (Russian) bloodlines. In the general population of Simmental breed, the best productivity was shown by cows of German-Austrian bloodlines at the level of 5351 kg of milk with fat percentage 4.00 % and protein percentage 3.19 %. Representatives of German-Austrian bloodlines origin for milk yield showed the estimated breeding value (EBV) for Simmental bulls in the common population by +9.2 kg and fat percentage by +0.012 %. The negative EBV values were obtained for Russian bloodlines by –22.8 kg, and Holstein bloodlines took an intermediate position among all lines (+2.3 kg). The first calving cows, which were in the herd at the time of research, the best milk production traits were found in individuals of foreign origin, both for Holstein (6096 kg of milk with a fat content of 3.96 % and protein 3.23 %), and German-Austrian bloodlines (milk yield 5763 kg, fat 4.04 % and protein 3.19 %), with high estimates of breeding value for milk yield +33.3 kg and +15.2 kg, respectively. Low values of milk productivity among all evaluated animals were observed for animals of Russian bloodlines by 4469 kg milk 3.87 % fat and 3.20 % protein in milk. The first calving cows of Russian origin in foreign bloodlines origin exceeded their peers in Russian Simmental bloodlines in milk production by +608 kg of milk and +0.15 % fat (signed to German-Austrian bloodlines) and +924 kg and +0.06 % fat (signed to Holstein bloodlines). The average values of EBV in these lines, although had low values by –5.6 kg milk for Holstein and by +2.7 kg milk for German-Austrian bloodlines, but was significantly higher than for Russian lines by –12.7 kg milk. Scientific novelty. For the first time, scientific research aimed at improving the system of prediction to breeding abilities of bulls on dairy productivity of daughters based on optimization structure of equations of the mixed model (BLUP, the best linear unbiased prediction) has been carried out for the population Simmental cattle of Russian Federation.

scholarly journals Quantitative analysis of genetic improvement of milk production phenotypes in Simmental cows

2009 ◽  
Vol 25 (1-2) ◽  
pp. 45-51
Author(s):  
M.M. Petrovic ◽  
Lj. Sretenovic ◽  
V. Bogdanovic ◽  
P. Perisic ◽  
S. Aleksic ◽  
...  
Keyword(s):  
Milk Production ◽  
Mixed Models ◽  
Mixed Model ◽  
Statistical Data ◽  
Paper Analysis ◽  
Breeding Value ◽  
Statistical Data Analysis ◽  
Method Of Least Squares ◽  
General Average ◽  
Quantitative Properties

Results of the effect of direct and indirect selection on quantitative properties of milk production of first calving Simmental cows in Serbia, are presented in the paper. Analysis of quantitative phenotypic parameters was carried out in four breeding regions and certain number of smaller farms where 1319 daughters of 13 bull sires were reared. Results of the analysis were obtained by application of mathematical-statistical data analysis, using mixed models (Harvey, 1990). Mathematical-statistical analysis of data was carried out using linear methods with fixed effect, through method of least squares (LS method), and for evaluation of bull breeding value mixed model of random bull sire effect was used (BLUP method). Based on obtained results it was established that analyzed breeding region has statistically highly significantly (**P<0.01.) caused deviations of production phenotypes from general average. Season and year of calving (*P<0.05.) have caused significant variations of production properties. .

EFFICIENCY AND COMPARISON OF THE TEST-DAY MODEL AND BLUP METHOD MODIFICATIONS FOR ASSESSING BULLS BREEDING VALUE IN SIMMENTAL CATTLE BREED

2020 ◽  
Author(s):  
А.И. МАМОНТОВА ◽  
С.А. НИКИТИН ◽  
Е.Е. МЕЛЬНИКОВА ◽  
А.А. СЕРМЯГИН
Keyword(s):  
Animal Model ◽  
Milk Yield ◽  
Cattle Breed ◽  
Breeding Value ◽  
Am1 Method ◽  
Production Traits ◽  
Genetic Trend ◽  
Sire Model ◽  
The Russian Federation ◽  
Simmental Cattle

Целью проведенных исследований являлась отработка и адаптация применения методик BLUP AM (Animal Model — модель животного) и TDM (Test-Day Model — модель тестового дня) для прогнозирования племенной ценности быков-производителей и оценки селекционно-генетических параметров на популяции скота симментальской породы четырех регионов РФ. Проведен сравнительный анализ указанных методов с более ранним методом BLUP SM (Sire Model — модель отца). Рассчитана племенная ценность быков и коров симментальской породы по признакам молочной продуктивности: удой за 305 дней, выход молочного жира, выход молочного белка. Анализ полученных средних значений достоверности оценок быков-производителей, рассчитанных на основе сопоставляемых методов, свидетельствует, что достоверность для признака «удой за 305 дней» при переходе от метода SM1 к AM1 увеличивается на 2,4%, а при переходе от SM1 к TDM1 — на 7,8%. Даны варианты генетического тренда по удою с использованием различных уравнений моделей расчета племенной ценности. На основании полученных данных можно сделать вывод о том, что модель тестового дня позволяет не только повысить точность оценок быков, но и более рельефно выявить их ранги, а также несколько уменьшить срок получения достоверных оценок производителей по качеству потомства по продуктивным признакам. The purpose of this research was to develop and adapt the application of BLUP AM (Animal Model) and TDM (Test-Day Model) methods for predicting the sires breeding value and evaluating genetic parameters for Simmental cattle population in four regions of the Russian Federation. A comparative analysis of these methods with the earlier BLUP SM (Sire Model) method is performed. The breeding value for sires and cows of Simmental breed was calculated by milk production traits: milk yield for 305 days; milk fatyield; milk proteinyield. The sires reliability of average breeding value calculated by different methods reveal that milk yield for 305 days when switching from the SM1 to AM1 method increases by 2.4%, and when switching from SM1 to TDM1 — by 7.8%.The variants of the genetic trend for milk yield are given using various equations of BLUP and TDM. Based on the obtained data, it can be concluded that the Test-Day model allows increasing the accuracy of bull’s evaluation and also more clearly identifying their ranks, as well as slightly reducing the time for obtaining reliable estimates of bulls by offspring for production traits.

scholarly journals Effect of single-nucleotide polymorphisms on the breeding value of fertility and breeding value of beef in Hungarian Simmental cattle

2018 ◽  
Vol 66 (2) ◽  
pp. 215-225 ◽  
Author(s):  
István Anton ◽  
Balázs Húth ◽  
Imre Füller ◽  
György Gábor ◽  
Gabriella Holló ◽  
...  
Keyword(s):  
Single Nucleotide Polymorphisms ◽  
Mixed Model ◽  
Breeding Value ◽  
Nucleotide Polymorphisms ◽  
Molecular Tools ◽  
Single Nucleotide ◽  
Chip Data ◽  
Minor Alleles ◽  
Simmental Cattle ◽  
Data Screening

The objective of this study was to estimate the effect of single-nucleotide polymorphisms (SNPs) on the breeding value of fertility (BVF) and the breeding value of beef (BVB) in Hungarian Simmental cattle. Genotypes were determined on a high-density Illumina Bovine DNA Chip. Data screening and data identification were performed by multi-locus mixed-model. Statistical analyses were carried out to find associations between individual genotypes and the investigated quality values. Three loci showed considerable association with BVF (–log10 P = 9.5, 9.9 and 14.5, respectively) on chromosomes 9, 28 and 29, respectively. The frequencies of their minor alleles (MAF) were 0.375, 0.355 and 0.354, respectively. Two loci showed association with BVB (–log10 P = 25.3 and 22.7) on chromosomes 2 and 11, respectively (their MAF were 0.438 and 0.229). The abovementioned loci provide a straightforward possibility to assist selection by molecular tools.

scholarly journals The effectiveness of genomic selection for milk production traits of Holstein dairy cattle

2020 ◽  
Vol 33 (3) ◽  
pp. 382-389 ◽  
Author(s):  
Yun-Mi Lee ◽  
Chang-Gwon Dang ◽  
Mohammad Z. Alam ◽  
You-Sam Kim ◽  
Kwang-Hyeon Cho ◽  
...  
Keyword(s):  
Genomic Selection ◽  
Milk Production ◽  
Genetic Gain ◽  
Milk Fat ◽  
Breeding Value ◽  
Production Traits ◽  
Milk Production Traits ◽  
Data Set ◽  
Selection For ◽  
Estimated Breeding Value

Objective: This study was conducted to test the efficiency of genomic selection for milk production traits in a Korean Holstein cattle population.Methods: A total of 506,481 milk production records from 293,855 animals (2,090 heads with single nucleotide polymorphism information) were used to estimate breeding value by single step best linear unbiased prediction.Results: The heritability estimates for milk, fat, and protein yields in the first parity were 0.28, 0.26, and 0.23, respectively. As the parity increased, the heritability decreased for all milk production traits. The estimated generation intervals of sire for the production of bulls (L<sub>SB</sub>) and that for the production of cows (L<sub>SC</sub>) were 7.9 and 8.1 years, respectively, and the estimated generation intervals of dams for the production of bulls (L<sub>DB</sub>) and cows (L<sub>DC</sub>) were 4.9 and 4.2 years, respectively. In the overall data set, the reliability of genomic estimated breeding value (GEBV) increased by 9% on average over that of estimated breeding value (EBV), and increased by 7% in cows with test records, about 4% in bulls with progeny records, and 13% in heifers without test records. The difference in the reliability between GEBV and EBV was especially significant for the data from young bulls, i.e. 17% on average for milk (39% vs 22%), fat (39% vs 22%), and protein (37% vs 22%) yields, respectively. When selected for the milk yield using GEBV, the genetic gain increased about 7.1% over the gain with the EBV in the cows with test records, and by 2.9% in bulls with progeny records, while the genetic gain increased by about 24.2% in heifers without test records and by 35% in young bulls without progeny records.Conclusion: More genetic gains can be expected through the use of GEBV than EBV, and genomic selection was more effective in the selection of young bulls and heifers without test records.

ГЕНЕТИЧЕСКАЯ ЦЕННОСТЬ СИММЕНТАЛЬСКИХ БЫКОВ-ПРОИЗВОДИТЕЛЕЙ ЗАРУБЕЖНОЙ СЕЛЕКЦИИ ПРИ ПЕРЕОЦЕНКЕ НА БАЗЕ ПЛЕМЕННЫХ РЕСУРСОВ РОССИИ

2019 ◽  
pp. 13-18
Author(s):  
A.A. SERMYAGIN ◽  
L.P. IGNATIEVA ◽  
S.A. SHEMETYUK ◽  
S.N. KHARITONOV ◽  
I. SOELKNER ◽  
...  
Keyword(s):  
Genetic Parameters ◽  
Breeding Value ◽  
Production Traits ◽  
Milk Production Traits ◽  
Fat Percentage ◽  
Genetic Breeding ◽  
Additional Information ◽  
Livestock Population ◽  
The Russian Federation ◽  
Simmental Cattle

Проведены сравнительные исследования по переоценке быковпроизводителей симментальской породы импортного происхождения на примере российской региональной популяции скота. Дана краткая характеристика состояния развития генетических ресурсов на породном уровне в Австрии. Проведено сопоставление селекционногенетических параметров в сравнении с РФ. Оценка племенной ценности производителей отечественной (n843) и зарубежной селекции (n641) проводилась на основе методологии BLUP, которая далее сравнивалась с официальной оценкой быков, полученной аналогичным методом по результатам 2018 года в Австрии. Наследуемость показателей молочной продуктивности колебалась от 0,182 до 0,252. Анализ результатов взаимосвязи между фенотипическими показателями дочерейпервотелок, а также генетическими оценками быковпроизводителей показал низкую повторяемость от 0,145 по фенотипу до 0,216 по генотипу для удоя, 0,047 и 0,103 для процента жира, 0,043 и 0,109 для процента белка, соответственно, по изучаемой выборке. С увеличением числа потомков и точности племенной ценности повторяемость EBV быков, оцененных в РФ и Австрии, возрастала от 0,0950,181 до 0,7470,918, соответственно. Определены условия для прохождения процедуры проверки по качеству потомства импортированных быков симментальской породы (семени) для их переоценки на территории РФ: должны быть получены не менее 80 дочерей из 34 хозяйств EBV страныпроисхождения по ряду хозяйственно полезных признаков может бытьиспользовано в качестве дополнительной информации точность оценки, полученной на поголовье в РФ, должна быть не ниже 70, а переоценка племенной ценности максимально приближена к методике страны выведения особи, то есть к BLUP процедуре.Comparative studies on the reevaluation in Simmental cattle sires of foreign origin were carried out using the Russian regional livestock population. A brief description of genetic resources development of Simmental cattle in Austria is given. A comparison of genetic parameters with the Russian cattle population is carried out. Assessment of breeding value in domestic (n843) and foreign breeding sires populations (n641) was carried out by BLUP methodology which was then compared with the official bulls evaluation obtained using a similar method according to the results of 2018 in Austria. The heritability of milk production traits ranged from 0.182 to 0.252. The correlation analysis between phenotypic features of firstparity daughters and genetic breeding values of sires showed low repeatability from 0.145 for the phenotype to 0.216 for the genotype by milk yield, 0.047 and 0.103 for the fat percentage, 0.043 and 0.109 for the protein percentage, respectively, for the studied dataset. With an increase the number of offspring and the accuracy of breeding value the repeatability of the bulls EBV evaluated in the Russian Federation and Austria ranged from 0.0950.181 to 0.7470.918, respectively. The conditions for passing the verification procedure of imported Simmental bulls (semen) in Russia for reevaluation are defined: at least 80 daughters from 34 farms must be obtained EBV of the country origin for economically useful traits can be used as additional information the accuracy of the EBV based on Russian population should not be lower than 70, and the reassessment of breeding value should be as close as possible to the BLUP methodology of the country that animal was bred.

THE EFFECT OF KAPPA-AND BETA-CASEIN GENOTYPES ON BREEDING VALUES OF MILK PRODUCTION TRAITS IN HOLSTEIN SIRES ORIGINATED IN MOSCOW REGION

2021 ◽  
pp. 5-10
Author(s):  
В. ФИЛИПЕНКОВА Г ◽  
А. СЕРМЯГИН А ◽  
И.Н. ЯНЧУКОВ ◽  
Н. ЕРМИЛОВ А ◽  
С. ДЕЛЯН А
Keyword(s):  
Milk Fat ◽  
Considerable Effect ◽  
Moscow Region ◽  
Breeding Value ◽  
Dairy Production ◽  
Production Traits ◽  
Milk Production Traits ◽  
Anova Analysis ◽  
Milk Protein Genes ◽  
Beta Casein

Проведены исследования на 103 быках-производителях голштинской породы черно- и красно-пестрой масти Московской области, оцененных методами BLUP и GBLUP. Производителей разделили на 3 группы в зависимости от года их рождения (г. р.): до 2005 г. р. (n=18), с 2006 по 2010 г. р. (n=34) и с 2011 по 2013 г. р. (n=51). Интерес представляло изучение генотипов по генам каппа- (κ-CSN) и бета-казеина (β- CSN), потенциально связанных с повышенным содержанием белка и продуцированием коровами «гипоаллергенного» молока А2. Однофакторный дисперсионный анализ показал значимое влияние генотипа по гену κ-CSN (P<0,001) и тенденцию для β-CSN на изучаемые показатели племенной ценности голштинских быков. Установлено, что носители генотипа BB гена CSN3 имеют превосходство в сравнении с животными, имеющими генотип АА, по количеству молочного жира и белка в молоке – на 16,8 кг и 13,2 кг соответственно, что важно при производстве молочных продуктов. Встречаемость у исследуемых быков-производителей генотипов А2А2 по гену бета-казеина (n=41) имеет большую численность в сравнении с А1А1 (n=21), что подразумевает возможным формирование специализированного стада для получения молока А2 путем группировки животных по результатам генотипирования. По мере накопления результатов оценки быков-производителей по качеству потомства, исследования в направлении изучения влияния генотипов по генам белков молока будут продолжены. The main purpose of this article was to study kappa-and beta-casein genotypes significantly associated with an increased protein content and the production of «hypoallergenic» 2A milk. The study involved 103 Black and Red-and-White Holsteins in Moscow region estimated by BLUP and GBLUP procedures. In order to evaluate the effectiveness of the study Holstein sires were selected into three groups according to their age (born in 2005) (n=18), from 2006 to 2010 (n=34) and from 2011 to 2013 (n=51). The ANOVA analysis showed a considerable effect of the genotype for the k-CSN gene (P<0,001) and the trend for β-CSN on the studied traits of breeding value of Holsteins. The highest performance in terms of amount of milk fat and protein showed that the cows with CSN3 BB group had a significant advantage in comparison with the cows of AA genotype by 16.8 kg and 13.2 kg, respectively, which is important in the dairy production. The frequency of the occurrence of homozygotes of A2A2 beta-casein (n=41) in the cows was the highest amounting in comparison with the A1A1 genotype (n=21) which implies that it is possible to form a specialized herd for obtaining A2 milk by grouping animals according to the results of genotyping. As the results of assessment of the sires’ breeding value accumulate, the study of the effect of genotypes on the milk protein genes will be pursued.

Association of class I bovine lymphocyte antigens with production traits in the Ayrshire breed

1994 ◽  
Vol 74 (4) ◽  
pp. 703-705
Author(s):  
T. R. Batra ◽  
P. A. Macdonald ◽  
M. J. Stear
Keyword(s):  
Key Words ◽  
Milk Fat ◽  
Breeding Value ◽  
Additive Effects ◽  
Production Traits ◽  
Substitution Model ◽  
Ayrshire Breed ◽  
Bovine Lymphocyte ◽  
Lymphocyte Antigens ◽  
Fat Yield

Ninety progeny tested Canadian Ayrshire bulls were serologically typed for the BoLA-A locus to determine the association of these alleles with production traits. After exclusion of bulls carrying alleles that occurred at frequencies lower than 2% or whose production proofs were not available, records from 78 bulls remained for analysis. A gene substitution model, which included the effects of BoLA alleles and the breeding value of the sire of the bull as covariate, was used to evaluate the additive effects of BoLA alleles of bulls (ETAs) on the production traits of their daughters. Allele W17 was significantly associated with ETA for milk, fat and protein yields. Allele CA96 was associated with significant increases in ETA for fat yield. There was no significant association of BoLA alleles with either ETA for fat or protein percentage. Key words: BoLA, production traits, Ayrshire

scholarly journals Application of the technology of improvement of body development traits as a basis for milk production in Simmental cattle population in Serbia

2006 ◽  
Vol 22 (3-4) ◽  
pp. 33-43
Author(s):  
V. Bogdanovic ◽  
Radica Djedovic ◽  
P. Perisic ◽  
M.M. Petrovic
Keyword(s):  
Genetic Variability ◽  
Milk Production ◽  
Body Length ◽  
Genetic Improvement ◽  
Cattle Population ◽  
Body Frame ◽  
Body Development ◽  
Simmental Cattle ◽  
Heritability Estimates

To analyze variability and heritability of body development traits and possibilities for their improvement data of 371 performance tested Simmental bulls were used. Average test-on (120 days of age) and test-off (365 days of age) height at withers (HW), circumference of chest (Cir), depth of chest (DC), width of round (WR), width of hip (WH) and body length (BL) were 99.88?3.49 and 126.00?2.65 cm, 127.42?6.14 and 184.76?5.95 cm, 42.55?2.25 and 60.90?2.15 cm, 32.56?3.01 and 47.63?2.67 cm, 30.26?2.12 and 44.14?1.93, 106.69?5.99 and 147.57?4.65 cm, respectively. Average values for test-on and test-off index of body frame (IBF), index of chest depth (ICD), index of body compactness (ICBL), and index of massiveness (IM) were 106.8?4.44 and 117.13?3.11%, 42.61?1.90 and 48.34?1.45%, 119.59?5.19 and 125.27?4.26%, 127.58?4.86 and 146.65?4.30%, respectively. Heritability estimates for test-off height at withers, circumference of chest, depth of chest and body length were 0.43, 0.30, 0.33 and 0.29. Possibilities for improvement of body development traits were done according to their phenotypic and genetic variability. Obtained results confirm that exist enough variability in major body development traits in Simmental bulls which can be utilized not only for genetic improvement of milk production in their daughter, but also for improvement of overall body traits in Simmental population in Serbia.

scholarly journals Association of HindIII-polymorphism in kappa-casein gene with milk, fat and protein yield in holstein cattle*

2018 ◽  
Vol 65 (3) ◽  
Author(s):  
Martina Miluchová ◽  
Michal Gábor ◽  
Juraj Candrák ◽  
Anna Trakovická ◽  
Kristína Candráková
Keyword(s):  
Information Content ◽  
Milk Production ◽  
Polymorphism Information Content ◽  
Milk Fat ◽  
Breeding Value ◽  
Holstein Cattle ◽  
Cattle Population ◽  
Effective Number ◽  
Breeding Values ◽  
The Impact

The aim of the paper was to evaluate the effect of genetic polymorphism of kappa-casein on the milk production in Holstein cattle. A total 210 cows of Holstein cattle were use in this study. On the basis of PCR-RFLP analyses we established genotype structure of cattle population and calculated allelic frequencies. In Holstein cattle population was detected all three genotypes – AA (69.52%), AB (27.62%) and BB (2.86%). The frequency of allele A was 83.33% and allele B was 16.67%. Effectiveness of allele incidence and genetic diversity was evaluated with following parameters: theoretical heterozygosity (Heexp), experimental heterozygosity (Heobs), polymorphism information content (PIC), expected homozygosity (E), effective number of alleles (ENA), level of possible variability realization (V%). The Holstein cattle kept in Slovak Republic exhibit high value of homozygosity and low values of polymorphism information content, effective number of alleles and level of possible variability realization. The effect of polymorphism of CSN3 gene on average breeding values for milk production traits as the yield of milk, fat and protein in kilograms as well as contents of fat and protein in percentages was detected using by the packed SAS 9.3 of SAS Enterprise Guide 5.1. We detected statistical significant difference between genotypes only at an average breeding value for the percentage of protein in milk during assessment the variability of observed traits in depending on polymorphism of CSN3 gene. For other breeding values the impact of individual genotypes CSN3 gene on their variability was not observed.

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