Polymorphisms associated with egg number at 300 days of age in chickens

Xu, Haipin; Zeng, Hua; Zhang, D.X.; Jia, Xiaoyang; Luo, Chenglong; Fang, Ming; Nie, Qinghua; Zhang, X.Q.

doi:10.4238/2011.october.3.5

Cited by 31 publications

(45 citation statements)

References 38 publications

(47 reference statements)

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“…For IGF-1 gene, Li et al (2009) suggested that IGF-1 genetic polymorphism at position 5'UTR was related to egg production at 300 and 400 days of age and the number of continuous laying days. In addition, Xu et al (2011b) also demonstrated the relationship between g.31394761C>T polymorphism of NPY gene and first-laying age in Ningdu Sanhuang chickens, followed by the publication of Fatemi et al (2012) on the association between NPY gene and production traits as well as growth ability in many different chicken traits. Similarly, for VIP and VIPR-1 receptor genes, El Halawani et al (2000) found that injecting VIP into 25 week and 54 week-old chickens resulted in an increase in egg production.…”

Section: Introductionmentioning

confidence: 97%

“…Enhancing and stabilizing breeding quality are one of the methods used to improve these indicators. Many candidate genes associated with poultry productivity have been identified (Abdi et al, 2014;Fatemi et al, 2012;Xu et al, 2011a;Xu et al, 2011b), as a result of the unprecedented improvements of genetic technology, especially molecular genetics.…”

Section: Introductionmentioning

confidence: 99%

“…Chaiseha et al (2003) cloned cDNA of the DRD2 gene in turkeys and pointed out the associations between DRD2 gene and production and hatching traits. Similarly, Xu et al (2011a;2011b) studied the g.5841629T>C polymorphism on DRD2 gene and found a significant association between first laying age and total egg production in chickens at 300 days of age. For IGF-1 gene, Li et al (2009) suggested that IGF-1 genetic polymorphism at position 5'UTR was related to egg production at 300 and 400 days of age and the number of continuous laying days.…”

Section: Introductionmentioning

confidence: 99%

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Effects of genetic polymorphisms on egg production in indigenous Noi chicken

Ngu¹,

Vu²,

Nhan³

et al. 2015

JEBAS

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The aim of this study was to evaluate the genetic potential of candidate genes involved in egg yield of Noi chicken, a popular backyard chicken breed in the Mekong Delta of Vietnam with limited egg production. A total of 130 hens were individually stalled for daily egg record in 20 weeks. Feather samples were collected for DNA extraction and genotyping was carried out using PCR-RFLP method. Five genes, namely DRD2 (Dopamine receptor 2), IGF-I (Insulin-like growth factor I), NPY (Neuropeptide Y), VIP (Vasoactive intestinal polypeptide) and VIPR-1 (Vasoactive intestinal peptide receptor 1) were used in the present work. It was shown that allele frequencies of DRD2/BseGI, VIP/VspI and VIPR-1/HhaI polymorphisms were of great discrepancy in Noi chicken population and there were significant associations between genotypes and egg numbers (P<0.05). Furthermore, chickens carrying DD (NPY/DraI), CC (VIPR-1/TaqI) and CC (VIPR-1/HhaI) genotypes had highest egg production with 50.9, 49.8 and 50.4 eggs/hen/20 laying weeks, respectively. These results provide an alternative for breeding selection of Noi chicken towards improving egg production.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of genetic polymorphisms on egg production in indigenous Noi chicken

Ngu¹,

Vu²,

Nhan³

et al. 2015

JEBAS

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“…The candidate gene approach is a cost-effective means of investigating associations of gene polymorphisms and quantitative trait loci responsible for variations in traits of interest (Rothschild and Soller, 1997;Linville et al, 2001). Many studies have been carried out to identify associations between candidate gene SNPs and egg production traits (Xu et al, 2010(Xu et al, , 2011Huang et al, 2011;Xiao et al, 2011). However, more candidates are needed for marker-assisted selection.…”

Section: Introductionmentioning

confidence: 99%

Genetic effect of the prolactin receptor gene on egg production traits in chickens

Zhang¹,

Dy²,

Yp³

et al. 2012

Genet. Mol. Res.

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ABSTRACT. The identification and utilization of potential candidate genes with significant effects on economically important traits have become increasingly important in poultry breeding programs. The prolactin (PRLR) receptor is a specific receptor for prolactin, which is an anterior pituitary peptide hormone involved in various physiological activities and is essential for reproductive success. In chickens, the PRLR gene resides on the Z chromosome. We used a pooled DNA sequencing approach for identifying SNPs of the PRLR gene. Three hundred and ninesix Erlang Mountainous chicken hens were genotyped for six SNPs using PCR-SSCP and PCR-sequencing methods; the association with chicken egg production traits was studied using general linear model procedures. Three linked SNPs (G14952A, A14969C and G14984A) at the P1 locus, two linked SNPs (G17560A and T17626A) at the P2 locus, and one SNP (T20868C) at the P3 locus were identified. Eight haplotypes were reconstructed on the basis of the six SNPs. The general linear model analysis indicated that there were significant associations of certain genotypes and haplotypes with some egg production traits. We conclude that chicken PRLR gene polymorphisms are associated with egg production traits and have potential as molecular markers for chicken breeding.

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“…Compared to other animals, the intron regions of the cGH gene is highly polymorphic. Furthermore, studies using RFLP have shown that these polymorphisms are associated with abdominal fat, egg production, resistance to Marek's disease or avian leucosis, and meat yield traits (Fotouhi et al, 1993;Kuhnlein et al, 1997;Feng et al, 1997;Yan et al, 2003;Lei et al, 2007;Zhang et al, 2007;Xu et al, 2011).…”

Section: Discussionmentioning

confidence: 99%