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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Polymorphisms in the gene of UCP3 in dairy cattle

100%
Glosinska J., Kowalewska-Luczak I., Kulig H., Wojdak-Maksymiec K.
Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica
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2015
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tom 36
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

CRH gene polymorphism in relation to milk production traits in cattle

100%
Kulig H., Kowalewska-Luczak I., Szydlowska J.
Acta Scientiarum Polonorum. Zootechnica
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2011
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tom 10
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nr 1
The aim of this study was to estimate the relations between the CRH-A145G polymorphism and milk production traits (yields of milk, protein, and fat, as well as protein and fat content) in 176 Jersey cows. The genotype and allele frequencies were estimated and they were as follows: AG – 0.31; GG – 0.69; A – 0.16; G – 0.84. Statistical analysis revealed that studied polymorphism significantly affected the fat yield, fat content (P≤0.05) and protein content in milk (P≤0.05). The results indicate that selection for the CRH-A145G AG animals might contribute to increase the value of these traits in Jersey cattle. However, further studies are necessary to verify the results of our study.
3

Selected genetic markers: their effect on milk production traits

86%
Cernekova V., Dudkova G., Kott T., Stankova Z., Soldat J., Markova M.
Animal Science Papers and Reports. Supplement
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2004
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tom 22
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nr 2
4

Polymorphism A/C in exon 7 of the bovine estrogen receptor alpha (ERalpha) gene and its association with functional and milk production traits in Red-and-White cattle

72%
Szreder T., Oprzadek J., Zelazowska B., Dymnicki E., Zwierzchowski L.
Animal Science Papers and Reports
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2011
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tom 29
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nr 4
Due to the functions that estrogens play in the regulation of reproduction, development of mammary gland, growth and differentiation of cells, estrogen receptors and their genes are considered candidates for molecular markers of production and functional traits in farm animals. In this study,using the SSCP and DNA sequencing, we found a novel single nucleotide polymorphism (SNP) in the coding region of the estrogen receptor α (ERα) gene – the A/C transversion at position 323,396 (relative to the start of transcription site), in exon 7, that could be also detected with RFLP-CfrI.This mutation causes the amino acid replacement – Asparatic acid/Alanine in the ligand-binding domain (LBD) of the receptor.The ERα A/C (RFLP-CfrI) genotypes were estimated in a cohort of 489 cattle of different breeds,including 355 Red-and-White cows. Association was studied between ERα genotype and dairy production traits (milk yield and composition) and functional traits (reproduction, length of productive life). The results showed that ERα A/C genotype affected significantly only a few traits of interest: protein and fat content in milk, sex of calves born. No associations were detected between ERα genotype and milk yield and reproduction traits of Red-and-White cows.
5

Vzah vybranych ukazatelu mlecne uzitkovosti u soboru bojnic cernostrakateho plemene na jednotlivych laktacich

72%
Chladek G., Kucera J.
Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Konferencje
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1998
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tom 17
6

SLC27A1 SNPs in relation to breeding value of milk production traits in Polish Holstein-Friesian cows

72%
Kulig H., Kowalewska-Luczak I., Zukowski K., Kunicka M., Kruszynski W.
Animal Science Papers and Reports
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2013
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tom 31
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nr 4
The aim of the study was to investigate associations between SLC27A1 genotypes and estimated breeding value of milk production traits (milk, fat and protein yield, kg; fat and protein content, %) in the Polish Holstein-Friesian cows’ herd. Three single nucleotide polymorphisms were genotyped,the g.14996C>G. in the exon 3, g.14791C>T in exon 4 and g.14589A>G in exon 5 of SLC27A1 gene.The genotype and allele frequencies for each polymorphism and the SLC27A1 haplotype frequencies were estimated in the examined herd. Significant relations between the SLC27A1 g.14791C>T SNP and breeding value for protein content were found. The results indicate that selection for the SLC27A1-CC individuals might contribute to increased protein content of milk in Polish Holstein-Friesian cows. Further studies are needed to confirm these results.
7

The relationship between the T945M single nucleotide polymorphism in the leptin receptor gene (LEPR) and milk production traits in Jersey cows

72%
Komisarek J., Dorynek Z.
Animal Science Papers and Reports
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2006
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tom 24
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nr 4
8

Fertility measures in Polish Black-and-White cattle. 1. Genetic parameters of heifer fertility traits

72%
Jagusiak W.
Journal of Animal and Feed Sciences
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2005
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tom 14
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nr 3
423-433
9

Impact of leptin gene polymorphisms on breeding value for milk production traits in cattle

72%
Komisarek J., Szyda J., Michalak A., Dorynek Z.
Journal of Animal and Feed Sciences
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2005
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tom 14
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nr 3
491-500
10

DGAT1 K232A quantitative trait nucleotide polymorphism in Polish Black-and-White cattle

72%
Pareek C. S., Czarnik U., Zabolewicz T., Pareek R. S., Walawski K.
Journal of Applied Genetics
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2005
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tom 46
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nr 1
The diacylglycerol o-acyltransferase 1 gene (OGAT1) was investigated in Polish Black-and-White cattle. The frequency of the K allele was 0.60, 0.68 and 0.48 for AI sires (n = 150), young bulls (n = 139) and cows (n = 213), respectively. The method of selective genotyping for identification of the quantitative trait nucleotide was verified through identification of DGAT1 effect on milk production traits. Daughters of six heterozygous bulls were selectively genotyped based on their milk traits. The genotypic frequencies differed between high and low yield groups representing milk and fat contents. The Kruskal-Wallis test revealed a highly significant effect of DGAT1 K232A in cows with extremely low fat content and a significant effect in cows with extremely high protein content of milk. No significant effect of AI sires’ genotypes on their breeding value was found.
11

An effect of the DGAT1 gene polymorphism on breeding value of Polish Holstein-Friesian sires

72%
Nowacka-Woszuk J., Noskowiak A., Strabel T., Jankowski T., Switonski M.
Animal Science Papers and Reports
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2008
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tom 26
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nr 1
The effect of the GC→AA polymorphism in the DGAT1 gene causing amino acid substitution (łysinę – K to alanine – A) was estimated on the breeding value (BV) of 89 Polish Holstein-Friesian sires. A fragment of 411 bp of the DGAT1 gene was analysed by RFLP (Cfr1) or MSSCP (screening for other substitutions). Only GC→AA in exon 8 dinucleotide substitution was identified causing K232A amino acid substitution. The frequencies of K and A alleles were 0.54 and 0.46, respectively. The KK genotype (compared to AA and KA) was found associated with higher BV for fat and protein content of milk and lower BV for milk and protein yields. Distribution of the polymorphism within the Holstein-Friesian population, as well as its effect on bull BV are discussed.
12
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Associations between interleukin-8 receptor (CXCR1) and interleukin-6 (IL6) polymorphism and immunity to mastitis in the Black-and-White variety of Polish Holstein-Friesian cows

58%
Stanislawczyk A., Wojdak-Maksymiec K.
Acta Scientiarum Polonorum. Zootechnica
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2018
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tom 17
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nr 3
13

A/C polymorphism in the beta-4 defensin gene and its association with phenotypic and breeding values of milk production traits in Polish-Friesian cows

58%
Bagnicka E., Strzalkowska N., Szreder T., Prusak B., Jozwik A., Kosciuczuk E., Krzyzewski J., Zwierzchowski L.
Animal Science Papers and Reports
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2008
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tom 26
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nr 4
Two novel single nucleotide polymorphisms (SNPs) were found in the bovine β4-defensin gene intron – A/C transversion at position 1674 and C/T transition at position 1877 – both recognized with BsrI endonuclease. Observed frequencies of the A1674C AA, AC, CC genotypes were 0.65, 0.32 and 0.03, respectively, while those of alleles A and C – 0.81 and 0.19. For the C1877T polymorphism in the Polish-Friesian (PF) population studied only the CC homozygotes (frequency 0.94) and CT heterozygotes (frequency 0.06) were found. Associations were evaluated between the A1687C polymorphism and milk production traits of cows. The data set comprised 8814 records of daily milk, fat, protein and ECM yields, fat, protein, lactose and dry matter contents, and somatic cell count (SCC) of milk of 352 cows. Moreover, 897 records were used of milk fat and milk protein yield and content achiewed in the whole and the standard 305-day lactation, as well as estimates of breeding values of these traits in 352 animals from official recording of milk performance (National Breeding Programme). In the whole lactation the β4-defensin gene A1674C polymorphism was fund significantly related to protein yield while in the standard lactation to fat and protein contents.Moreover, the polymorphism was found related to the breeding value for protein yield, and for FAT and protein content.
14

Effects of polymorphism at 5'-noncoding regions [promoters] of alphaS1- and alphaS2-casein genes on selected milk production traits in Polish Black-and-White cows

58%
Szymanowska M., Strzalkowska N., Siadkowska E., Krzyzewski J., Ryniewicz Z., Zwierzchowski L.
Animal Science Papers and Reports
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2003
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tom 21
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nr 2
The effects of cow’s genotype at αS1- and αS2-casein gene 5’-noncoding regions (promoters) were determined on selected milk production traits of the 135 Polish Black-and-White (Polish Friesian) cows as related to the animal’s age, lactation parity and stage, and somatic cell count. Cows of the AA genotype of αS1-casein gene yielded more milk daily than AG heterozygotes. Also, the daily yield of solids-non-fat, protein and lactose was higher in AA genotype cows. Milk of the cows with genotype CC of αS2-casein contained more lactose but less protein than that of the CT heterozygotes. The daily protein yield was slightly (but significantly) higher in the cows of the CT αS2-casein genotype. In summary, the results showed that genetic variants of αS1- and αS2-casein 5’-noncoding regions had only a slight effect on milk production traits of the Polish Black-and-White cows. Nevertheless,the AA genotype of αS1-casein seemed favourable for higher milk yield, as well as for lactose and protein content.
15

Associations between lactoferrin gene polymorphism and somatic cell count in milk and milk production traits in Jersey cws

58%
Wojdak-Maksymiec K., Kmiec M., Sapikowski S.
Folia Universitatis Agriculturae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica
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2007
|
tom 01
16

Genome-wide screening of 184 Bos taurus microsatellite markers and quantitative trait loci analysis of two candidate genes for milk production traits

58%
Pareek C. S.
Rozprawy i Monografie. Uniwersytet Warmińsko-Mazurski w Olsztynie
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2005
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tom 111
17

Association between milk protein polymorphisms and lifetime production traits in herds of Black-and-White and Red-and-White cattle improved by Holstein-Friesian sires

58%
Zieminski R., Juszczak J., Walawski K.
Annals of Animal Science
|
2002
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tom 02
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nr 1
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