SNP of cGH Gene in Egyptian Chicken Breeds at MspI site

Heba, I. Shafey; Aboelhassan, M D; El-Komy, Esteftah M.; El-Karim, Ragaa E. Abd; Karima, F. Mahrous

doi:10.13005/bbra/2414

Cited by 5 publications

(8 citation statements)

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“…In general, two approaches are commonly used to quantify genetic diversity. The first approach utilizes data that describe variation in discrete allelic state, and the second approach utilizes quantitative characters, which leads to different criteria for genetic diversity (Hughes et al, 2008;Shafey et al, 2017). In the present study, the first approach was used.…”

Section: Resultsmentioning

confidence: 99%

“…In Egypt, for instance, 90% of the chicken production is provided by commercial poultry farms (which use imported breeds) of different capacities, with the remaining 10% provided by small-scale household poultry farms that are abundant in villages and urban areas (Shatokhin et al, 2017). This reliance on commercial imported breeds precludes indigenous chickens from the production system, thus neglecting important genetic resources and exposing the indigenous breeds to the threat of extinction (Hwangbo et al, 2009;Shafey et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…The use of ecotypes to characterize genetic structure of indigenous chicken breeds has been studied (Muchadeyi et al, 2007;Sabry et al, 2017) and used as a sampling template in genetic diversity studies (Shafey et al, 2017). Indigenous chickens in Taif governorate, approximately 1.7 km above sea level, are adapted to harsh environmental conditions and high altitudes.…”

Section: Introductionmentioning

confidence: 99%

“…Advances in molecular technology have provided the opportunity to evaluate genetic variation at DNA level. Microsatellite markers generally have codominant as they are abundant, inheritance, and arbitrarily disseminated in the genome, highly polymorphic and reproducible (Hillel et al, 2003;Shafey et al, 2017). These features reveal that microsatellite markers have been used to assess and characterize genetic diversity in many commercial and indigenous chicken populations (Seo et al, 2013;Abebe et al, 2015;Fathi et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Assessment of genetic diversity among Egyptian and Saudi chicken ecotypes and local Egyptian chicken breeds using microsatellite markers

Sabry¹,

Ramadan²,

Hassan³

et al. 2021

JEB

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Aim: To assess genetic diversity of two chicken ecotypes from Egypt and Saudi Arabia and compare these ecotypes to six local Egyptian and two exotic pure chicken breeds using 14 microsatellite markers. Methodology: Dataset consisted of two subsets. First subset represented two ecotypes from Saudi Arabia and Egypt. Second dataset consisted birds six Egyptian native chicken strains: Fayoumi (FAY), Dandarawy (DAN), Baladi (BAL), Sinai (Sini), El-Salam (Els) and Golden Montazah (GG), and two commercial strains: White Leghorn (WL) and Rhode Island Red (RIR). fourteen microsatellites markers were utilized to assess DNA polymorphism. Data analyses of the results were carried out using R statistical environment. Results: The obtained results indicated that number of alleles per locus averaged 11.4 ± 5.0. Polymorphic information content was informative (> 50%) for the local breeds, but not for two ecotypes. The observed and expected heterozygosity averaged 0.46 and 0.75, both ecotypes had the lowest estimates. All breeds showed significant deviation from Hardy–Weinberg equilibrium expectation. The average population differentiation index (FST) was 0.143, overall heterozygosity deficiency (FIT) was 0.156, and global inbreeding of individuals within breeds (FIS) was 0.319. Interpretation: This study revealed that both Egyptian and Saudi ecotypes have an endangered status. Lower genetic distances and lower FST values were reported for the Egyptian indigenous breeds. Phylogenetic and principle components showed that both ecotypes were genetically closer to each other when compared with other breeds. It also showed that the Dandarawy native Egyptian chicken breed was genetically the closest breed to both the Egyptian and Saudi ecotypes. Key words: Chicken, Ecotypes, Genetic diversity, Microsatellites, Phylogenetics

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Assessment of genetic diversity among Egyptian and Saudi chicken ecotypes and local Egyptian chicken breeds using microsatellite markers

Sabry¹,

Ramadan²,

Hassan³

et al. 2021

JEB

View full text Add to dashboard Cite

show abstract

“…In this case, the foundation for breeding work is based on 1) the analysis of the genetic structure of populations of different chicken breeds, and 2) the search for associations between determined polymorphic loci and economic traits (Boschiero et al, 2018;Chethan et al, 2018). It involves the study of both (multiple) single nucleotide polymorphisms (SNP's) and Insertion and deletions (Indels) in the whole genome, and also the polymorphism of specifi c genes, the functional activity of whose products is related to ensuring the main physiological functions of the organism of animals (Bhattacharya et al, 2011;Heba et al, 2017;Dementeva et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Functional genes polymorphism associations with egg quality traits in the populations of dual-purpose

et al. 2020

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Aim. To study the egg quality traits of Poltava Clay chicken line 14 and Rhode-Island Red chicken line 38 with different genotypes of the prolactin gene (PRL), growth hormone gene (GH), growth hormone receptor gene (GHR), insulin-like growth factor I gene (IGF-I) and Mx gene (Mx). Methods. The study was conducted using the method of polymerase chain reaction and restriction fragment length polymorphism analysis (PCR-RFLP). Results. We found signifi cant differences in line 14 for egg quality between prolactin, growth hormone, growth hormone receptor and Mx loci. Homozygous individuals CC and TT by prolactin locus prevailed over heterozygotes CT for egg weight on the 30th week of life. As for the growth hormone gene, the maximum differences for egg weight were revealed when comparing BC heterozygotes with CC homozygotes. As for the growth hormone receptor gene, signifi cant prevalence (p < 0.05) of individuals with the B0 genotype over A0 by parameters of egg yolk weight was noted at the age of 52 weeks. Signifi cant differences (p < 0.05) in eggshell thickness were determined for genotypes AG and GG by Mx gene in week 52. There were signifi cant differences (p < 0.05) in egg quality traits for prolactin and Mx gene for chickens of line 38. TT homozygotes by prolactin locus are characterized by the prevalence of values (p < 0.05) for the egg, yolk and shell weight. In case of Mx gene polymorphism, the heterozygous individuals were characterized by signifi cantly higher values (p < 0.05) of egg and albumen weight on the 30th week of life. There were no signifi cant differences in both experimental chicken lines for other egg quality traits between individuals with different genotypes. Conclusions. The data obtained are recommended for the use in breeding programs for Poltava Clay chicken line 14 and Rhode-Island Red chicken line 38 with the aim of obtaining microlines with the different genotypes for PRL, GH, GHR and Mx loci.

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Heritability, Genetic and Phenotypic Correlations in Three Indigenous Egyptian Chicken Lines

Ramadan,

Rashed,

El-Komy

et al. 2024

Egyptian Journal of Veterinary Sciences

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T HE STUDY conducted aimed to examine the heritability, genetic and phenotypic correlations of body weight and egg production traits in Egyptian chickens. These traits are considered crucial in chicken production and the improvement of these traits through crossbreeding and selection programs is important for maximizing production. The data used in this study were obtained from three generations of three different chicken strains: Tanta G-1, Tanta G-2 and Mamourah. The researchers used the MCMC glmm package of R software to estimate the genetic parameters for these economically important traits in Gimmizah Station native chickens. After three generations of selection, the genetic correlations among body weight traits ranged from 0.78 to 0.96, 0.57 to 0.91 and 0.82 to 0.93 for Tanta G-1, Tanta G-2 and Mamourah chickens, respectively. The phenotypic correlation among different body weights ranged from 0.26 to 0.95, 0.17 to 0.96 and 0.38 to 0.97 for Tanta G-1, Tanta G-2 and Mamourah lines, respectively. These correlations increased from one generation to another. For the heritability of body weight traits, they ranged from 0.16 to 0.34, 0.15 to 0.33 and 0.13 to 0.19 for Tanta G-1, Tanta G-2 and Mamourah lines, respectively. In conclusion, the study suggests that simultaneous selection for both growth and egg production traits may result in a reduction in egg number but an increase in egg weight. This finding highlights the need for careful consideration when selecting for these traits to attain a balanced and optimal outcome in chicken production.

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SNP of cGH Gene in Egyptian Chicken Breeds at MspI site

Cited by 5 publications

References 0 publications

Assessment of genetic diversity among Egyptian and Saudi chicken ecotypes and local Egyptian chicken breeds using microsatellite markers

Assessment of genetic diversity among Egyptian and Saudi chicken ecotypes and local Egyptian chicken breeds using microsatellite markers

Functional genes polymorphism associations with egg quality traits in the populations of dual-purpose

Heritability, Genetic and Phenotypic Correlations in Three Indigenous Egyptian Chicken Lines

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