Association Between Gene Polymorphism of Bovine Growth Hormone and Milk Traits in the Iranian Holstein Bulls

Sadeghi, Mostafa; Shahrebabak, M. Moradi; Rahimi, G.; Javaremi, A Nejati

doi:10.3923/ajas.2008.1.6

Cited by 6 publications

(8 citation statements)

References 12 publications

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“…In present investigation, the cows with LL genotype had significantly more milk yield than LV genotype (Table 3) and it confirmed the re sults of other researchers [7,8]. Many authors found significant association between LL genotype and high er fat yield [4,5,8,9].…”

Section: Discussionsupporting

confidence: 95%

“…Studies on Gyr breed showed that the breed was monomorphic for this allele [15]. Based on the reports, the Holstein breed have had the maximum frequency for L allele [8] and the minimum frequency for this allele have been observed in Jersey breed [7].…”

Section: Discussionmentioning

confidence: 93%

“…For example, the fre quency of L allele was reported 0.93 in Danish Hol stein; 0.85 in Danish Red; 0.51 in Danish Jersey [30], 0.909 in Hungarian Holstein Friesian [6], 0.936 in Ira nian Holstein bulls [8], 0.85 in Holstein breed [33], 0.52 in Jersey breed [7]. Studies on Gyr breed showed that the breed was monomorphic for this allele [15].…”

Section: Discussionmentioning

confidence: 97%

“…Association of GH gene polymorphism with pro duction traits in dairy cattle have been studied by many researchers [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Effect of polymorphic variants of GH, Pit-1, and β-LG genes on milk production of Holstein cows

et al. 2012

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Effect of polymorphic variants of growth hormone (GH), β lactoglobulin (β LG), and Pit 1 genes on milk yield was analyzed in a Holstein herd. Genotypes of the cows for these genes were determined by polymerase chain reaction restriction fragment length polymorphism (PCR RFLP) method. Allele frequen cies were 0.884 and 0.116 for L and V variants of GH, 0.170 and 0.830 for A and B variants of Pit 1, and 0.529 and 0.471 for A and B variants of β LG, respectively. GLM procedure of SAS software was used to test the effects of these genes on milk yield. Results indicated significant effects of these genes on milk yield (P < 0.05). Cows with LL genotype of GH produced more milk than cows with LV genotype (P < 0.05). Also, for Pit 1 gene, animals with AB genotype produced more milk than BB genotype (P < 0.05). In the case of β LG gene, milk yield of animals with AA genotype was more than BB genotype (P < 0.01). Therefore, it might be concluded that homozygote genotypes of GH (LL) and β LG (AA) were superior compared to heterozygote genotypes, whereas, the heterozygote genotype of Pit 1 gene (AB) was desirable.

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Section: Discussionsupporting

confidence: 95%

Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 97%

“…Association of GH gene polymorphism with pro duction traits in dairy cattle have been studied by many researchers [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of polymorphic variants of GH, Pit-1, and β-LG genes on milk production of Holstein cows

et al. 2012

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“…Yardibi et al (2009) also reported that the variant genotypes (LL, LV, and VV) of the GH|AluI gene had positive correlation with percentages of fat content and protein content of milk, but no correlation was found between those variant genotypes with milk production of dairy cattle. Investigation on some other breeds of dairy cattle proved that the LL genotype had higher milk production than the VV genotype (Dario et al, 2008;Sadeghi et al, 2008).…”

Section: Association Between the Gh Genotypes And Partial Cumulative mentioning

confidence: 99%

Growth Hormone Gene Polymorphism and Its Association with Partial Cumulative Milk Yields of Holstein Friesian Dairy Cattle

Misrianti¹,

Anggraeni²,

Andreas³

et al. 2012

Med Pet

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The polymorphism in g.1256G>A of bovine pituitary specific transcription factor-1 (bPIT-1) gene and its association with body weight of Pasundan cattle

Putra

Agung

Said

2019

J. Indonesian Trop. Anim. Agric.

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Bovine Pituitary specific transcription factor 1 (bPit-1) is one of amino acid that controling pituitary gland in mammals. The pituitary gland is important for secretion of growth hormone from growth genes. This study was carried out to detect polymorphism in the exon 6 of bPit-1 (g.1256G>A) in Pasundan cattle using PCR-RFLP method and its association with body weight. Total of 69 heads (15 males and 54 females) of Pasundan cattle from breeding station (BPPIBT-SP Ciamis, West Java) were used in this study. Research showed that two genotypes of bPit-1/HinfI gene were identified in this study i.e GG (0.90) and AG (0.10) with allele frequencies of 0.05 (A) and 0.95 (G). The polymorphic informative content (PIC) and number of effective allele (ne) values were 0.09 (low) and 1.11. respectively. The Chi-square (χ2) value in the population studied was 0.20 and in Hardy-Weinberg equilibrium (χ2<5.99). It was concluded that the polymorphism of bPit-1/HinfI in Pasundan cattle included of low category and was not associated with body weight.

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Association Between Gene Polymorphism of Bovine Growth Hormone and Milk Traits in the Iranian Holstein Bulls

Cited by 6 publications

References 12 publications

Effect of polymorphic variants of GH, Pit-1, and β-LG genes on milk production of Holstein cows

Effect of polymorphic variants of GH, Pit-1, and β-LG genes on milk production of Holstein cows

Growth Hormone Gene Polymorphism and Its Association with Partial Cumulative Milk Yields of Holstein Friesian Dairy Cattle

The polymorphism in g.1256G>A of bovine pituitary specific transcription factor-1 (bPIT-1) gene and its association with body weight of Pasundan cattle

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