scholarly journals Association between FSHR polymorphism with productive and reproductive traits in Antioquia Holstein cattle

2016 ◽  
Vol 69 (1) ◽  
pp. 7793-7801 ◽  
Author(s):  
Stephania Madrid Gaviria ◽  
Albeiro López Herrera ◽  
José Julián Echeverri Zuluaga
Keyword(s):  
Receptor Gene ◽  
Follicle Stimulating Hormone ◽  
Reproductive Traits ◽  
Mixed Linear Model ◽  
Holstein Cattle ◽  
Reproductive Parameters ◽  
Fat Percentage ◽  
Tukey Test ◽  
Allelic Substitution ◽  
Pcr Rflp

Because FSH and its receptor play a fundamental role in reproduction, the objective of this research was determining the effect of the A-320T polymorphism in productive and reproductive traits in Antioquia Holstein cows. The PCR-RFLP was used to amplify a segment of 970 bp of the bovine follicle stimulating hormone receptor gene (FSHR) which was digested with the restriction enzyme TaqI. The effect of the FSHR genotypes on productive and reproductive traits was determinate by a Mixed Linear Model and Tukey Test was used to establish significant differences between means for the three genotypes. The effect of allelic substitution was studied through a linear regression model where the genotypes AA, AT and TT were transformed into a quantitative scale of 0, 1 and 2, respectively according to the number of possessed T alleles. In Antioquia Holstein cattle the most common genotype was the AT (0.485) followed by TT (0.417) and AA (0.096) genotypes. Allele frequencies were 0.339 for A and 0.660 for T, respectively. The FSHR genotypes did not exert a significant effect on the principal productive parameters, except for fat percentage (P<0.01) where the TT individuals presented the highest percent. Results showed that T allele seems to improve the solids in milk while A allele improves dairy yield. The reproductive parameters were not affected by this SNP but AT animals showed a higher number of services per conception. Further studies are required to determine whether this SNP may be used as a molecular marker.

scholarly journals Assessment of growth hormone gene polymorphism effects on reproductive traits in Holstein dairy cattle in Tunisia

2018 ◽  
Vol 61 (4) ◽  
pp. 481-489 ◽  
Author(s):  
Sihem Amiri ◽  
Bayrem Jemmali ◽  
Mohamed Amine Ferchichi ◽  
Hajer Jeljeli ◽  
Rekik Boulbaba ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Dairy Cattle ◽  
Reproductive Traits ◽  
Mixed Linear Model ◽  
Favorable Effect ◽  
Growth Hormone Gene ◽  
Nucleotide Polymorphisms ◽  
Pcr Rflp ◽  
The Difference ◽  
Bovine Species

Abstract. Research to assess the effect of single genes on reproductive traits in bovine species is imperative to elucidate genes' functions and acquire a better perspective of quantitative traits. The present study was undertaken to characterize genetic diversity in the bovine growth hormone (GH) gene in a population of 410 Holstein dairy cows in Tunisia. The analyses were based on single nucleotide polymorphisms, and GH-AluI and GH-MspI detections and genotyping were carried out using the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Data were analyzed using a mixed linear model with the MIXED procedure to reveal the possible effect of GH genotypes on reproductive traits. The frequency data of AluI(L//V) and MspI(+//−) alleles were 87.04//12.96 and 70.06//29.94, respectively. The distribution of the frequency of GH genotypes for LL/LV/VV and (−/−)//(+/−)//(+/+) were 77.75//18.59//3.66 and 15.37//29.13//55.50, respectively. The results of the statistical analyses proved that GH-AluI showed a substantial favorable effect on exanimate traits except for the age at first calving; however, only a suggestive effect of GH-MspI on the calving interval (CI) and the days open (DI) was found. The homozygous LL genotype seemed to be advantageous with respect to the CI and the DI compared with LV and VV genotypes. Heterozygous MspI(+/−) cows tended to have a longer CI and DI than MspI(+/+) and MspI(−/−) cows, but the difference was not statistically significant. A significant effect of different GH-AluI–MspI combined genotypes was found on the number of inseminations per conception, the CI and the DI, and the LL/– combined genotype seemed to be associated with better reproductive performance. Based on these results, the LL genotype of the GH locus can be considered to be a favorable genotype for reproductive traits in Holstein dairy cattle, although these findings need to be confirmed by further research before polymorphisms can be used in a marker-assisted selection program.

scholarly journals Polymorphism and association of progesterone receptor gene with milk production and reproductive traits of rabbits

2020 ◽  
Vol 65 (No. 9.) ◽  
pp. 346-353
Author(s):  
Lubomir Ondruska ◽  
Vladimir Parkanyi ◽  
Jan Rafay ◽  
Alica Navratilova
Keyword(s):  
Progesterone Receptor ◽  
Milk Production ◽  
Litter Size ◽  
Association Studies ◽  
Receptor Gene ◽  
Reproductive Traits ◽  
Genotype Frequencies ◽  
Progesterone Receptor Gene ◽  
Pcr Rflp ◽  
Genotype A

Using the PCR RFLP method polymorphism and three different genotypes (AA, AG and GG) were detected in the progesterone receptor gene (PGR) promoter in a local Slovak crossbred rabbit line. We have noted a slightly majority frequency of allele A (0.53) over allele G (0.47). Comparing the observed and expected genotype frequencies with the χ<sup>2</sup> test the results were statistically significant, which means the tested rabbit population was non-equilibrium. The best results and significantly highest milk production (P &lt; 0.001) were recorded in the does of GG genotype compared to AA genotype. Other association studies aimed at the effect of genotypes on litter size showed the highest litter size and number of weaned rabbits per litter in GG genotype. A significantly higher (P &lt; 0.05) average number of stillborn kits per litter was in the group of does with AA genotype (0.62) compared with GG genotype (0.34).

scholarly journals Estrogen receptor gene (<i>ESR</i>) and semen characteristics of boars

2006 ◽  
Vol 49 (1) ◽  
pp. 71-76
Author(s):  
A. Terman ◽  
M. Kmieć ◽  
D. Polasik
Keyword(s):  
Estrogen Receptor ◽  
Candidate Gene ◽  
Receptor Gene ◽  
Reproductive Traits ◽  
Chromosome 1 ◽  
Estrogen Receptor Gene ◽  
Pcr Rflp ◽  
Semen Characteristics ◽  
Qualitative Characters ◽  
Esr2 Gene

Abstract. Estrogen receptor gene (ESR) which is localized in the swine chromosome 1, has been recognized as a "candidate" gene of reproductive traits. The aim of this study was to determine the mutations in the ESR/AvaI (ESR1) and ESR/PvuII (ESR2) gene in boars kept at the AI Station and its effect on selected quantitative and qualitative characters of the semen. The study included 217 boars maintained at the AI Station. The ESR genotypes were determined with PCR-RFLP. Two alleles ESR1 were identified: A (109 and 76 bp), B (76, 62 and 47 bp) and also two alleles ESR2: C (120 bp), D (65 and 55 bp), with the frequencies: 0.79 (A), 0.21 (B), 0.83 (C) and 0.17 (D) respectively. In the studied population of boars, the genotype AA was detected with the frequency 0.69, AB-0.21, BB-0.10 of ESR1 and CC-0.72, CD-0.23, DD-0.05 of ESR2. The analysis showed statistically significant differences (P≤0,01) between boars carrying different ESR1 and ESR2 genotypes and all semen traits.

scholarly journals PROLACTIN RECEPTOR GENE (PRLR) ROLE IN SWINE REPRODUCTION

2019 ◽  
Vol 17 (1) ◽  
pp. 75-80
Author(s):  
Zh. Sabev
Keyword(s):  
Receptor Gene ◽  
Prolactin Receptor ◽  
Reproductive Traits ◽  
Biological Functions ◽  
Chromosome 16 ◽  
Porcine Chromosome ◽  
Genotype Frequencies ◽  
Litter Traits ◽  
Pcr Rflp ◽  
Prolactin Receptor Gene

PRLR gene has been studied as a candidate gene for litter size in swine because of prolactin biological functions and their association with reproduction. Prolactin receptor gene is mapped on porcine chromosome 16. The established PCR-RFLP polymorphism at PRLR locus demonstrated the presence of two alleles, А and В and three genotypes АА, АВ and ВВ. There were found different allele and genotype frequencies in different pig populations with variation of the effects of PRLR genotypes on litter traits. Additional studies should be done in specific breeds and populations to evaluate the association of existing PRLR locus polymorphism with reproductive traits before application of marker-assisted selection in these populations.

scholarly journals Association of gene BoLA DRB3.2 with production traits in a dairy herd of Antioquia, Colombia

2014 ◽  
pp. 4116-4129 ◽  
Author(s):  
Juan Zambrano A ◽  
Julián Echeverri Z ◽  
Albeiro López-Herrera
Keyword(s):  
Dairy Herd ◽  
General Linear Model ◽  
Milk Quality ◽  
Holstein Cattle ◽  
Quality Traits ◽  
Production Traits ◽  
Fat Percentage ◽  
Allelic Variants ◽  
Pcr Rflp ◽  
Fat Yield

ABSTRACTObjective. To determine the associations of BoLA DRB3.2 alleles present in Holstein and BON x Holstein cattle to production and milk quality traits in a dairy herd of Antioquia, Colombia. Materials and methods. Ninety-one cows, 66 Holstein and 25 BxH, were genotyped for the BoLA DRB3.2 gene, through PCR-RFLP technique. Furthermore, the association of the alleles of the gene BoLA DRB3.2 with milk yield (PL305), fat yield (PG305), protein yield (PP305) fat percentage (PGRA) and protein percentage (PPRO) were determined, using a general linear model. Results. Twenty-seven BoLA DRB3.2 alleles were identified; the most frequent alleles in Holstein were: BoLA DRB3.2*23, 22, and 24 with frequencies of: 0.159, 0.129, and 0.106, respectively and the most frequent alleles in BxH were: BoLA DRB3.2*23, 24 and 20 with frequencies of: 0.20, 0.140, and 0.120, respectively. Associations of BoLA DRB3.2 alleles with production and milk quality traits were also determined. In Holstein cows the BoLA DRB3.2*36 allele was associated with low PL305 (p≤0.01), high PGRA in multiparous cows (p≤0.05) and high PG305 in primiparous cows (p≤0.01). The BoLA DRB3.2*33 allele was associated with increased in the PPRO in multiparous cows (p≤0.01). In BXH cows only the BoLA DRB3*19 allele was associated with high PGRA (p≤0.05). Conclusions. The gene BoLA DRB3.2 shows high polymorphism in both groups; Holstein and BxH and some of its allelic variants were associated with production and milk quality traits

scholarly journals The Association of an SNP in the EXOC4 Gene and Reproductive Traits Suggests Its Use as a Breeding Marker in Pigs

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 521
Author(s):  
Yingting He ◽  
Xiaofeng Zhou ◽  
Rongrong Zheng ◽  
Yao Jiang ◽  
Zhixiang Yao ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Fragment Length Polymorphism ◽  
Regulatory Element ◽  
Reproductive Traits ◽  
Specific Sequence ◽  
Litter Weight ◽  
Potential Binding ◽  
Pcr Rflp ◽  
Teat Number ◽  
Myeloid Zinc Finger

In mammals, the exocyst complex component 4 (EXOC4) gene has often been reported to be involved in vesicle transport. The SNP rs81471943 (C/T) is located in the intron of porcine EXOC4, while six quantitative trait loci (QTL) within 5–10 Mb around EXOC4 are associated with ovary weight, teat number, total offspring born alive, and corpus luteum number. However, the molecular mechanisms between EXOC4 and the reproductive performance of pigs remains to be elucidated. In this study, rs81471943 was genotyped from a total of 994 Duroc sows, and the genotype and allele frequency of SNP rs81471943 (C/T) were statistically analyzed. Then, the associations between SNP rs81471943 and four reproductive traits, including number of piglets born alive (NBA), litter weight at birth (LWB), number of piglets weaned (NW), and litter weight at weaning (LWW), were determined. Sanger sequencing and PCR restriction fragment length polymorphism (PCR-RFLP) were utilized to identify the rs81471943 genotype. We found that the genotype frequency of CC was significantly higher than that of CT and TT, and CC was the most frequent genotype for NBA, LWB, NW, and LWW. Moreover, 5′-deletion and luciferase assays identified a positive transcription regulatory element in the EXOC4 promoter. After exploring the EXOC4 promoter, SNP −1781G/A linked with SNP rs81471943 (C/T) were identified by analysis of the transcription activity of the haplotypes, and SNP −1781 G/A may influence the potential binding of P53, E26 transformation specific sequence -like 1 transcription factor (ELK1), and myeloid zinc finger 1 (MZF1). These findings provide useful information for identifying a molecular marker of EXOC4-assisted selection in pig breeding.

scholarly journals The Trend in Distribution of Q223R Mutation of Leptin Receptor Gene in Amoebic Liver Abscess Patients from North India: A Prospective Study

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Anil Kumar Verma ◽  
Vineet Ahuja ◽  
Jaishree Paul
Keyword(s):  
Liver Abscess ◽  
Leptin Receptor ◽  
Receptor Gene ◽  
Rflp Analysis ◽  
North India ◽  
Amoebic Liver Abscess ◽  
Fisher Exact Test ◽  
Exact Test ◽  
Pcr Rflp ◽  
A Prospective Study

Host genetic susceptibility is an important risk factor in infectious diseases. We explored the distribution of Q223R mutation in leptin receptor gene of amoebic liver abscess (ALA) patients of North India. A total of 55 ALA samples along with 102 controls were subjected to PCR-RFLP analysis. The frequency of allele “G” (coding for arginine) was in general high in Indian population irrespective of the disease. Our results of Fisher exact test shows that heterozygous mutant (QQ versus QR,P=0.049) and homozygous mutant (QQ versus RR,P=0.004) were significantly associated with amoebic liver abscess when compared with homozygous wild (QQ).

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