Associations between single nucleotide polymorphisms in multiple candidate genes and body weight in rabbits

Abstract

Aim:In this study, we examined parts of six growth genes (growth hormone [GH], melanocortin 4 receptor [MC4R], growth hormone receptor [GHR], phosphorglycerate mutase [PGAM], myostatin [MSTN], and fibroblast growth factor [FGF]) as specific primers for two rabbit lines (V-line, Alexandria) using nucleotide sequence analysis, to investigate association between detecting single nucleotide polymorphism (SNP) of these genes and body weight (BW) at market.Materials and Methods:Each line kits were grouped into high and low weight rabbits to identify DNA markers useful for association studies with high BW. DNA from blood samples of each group was extracted to amplify the six growth genes. SNP technique was used to study the associate polymorphism in the six growth genes and marketing BW (at 63 days) in the two rabbit lines. The purified polymerase chain reaction products were sequenced in those had the highest and lowest BW in each line.Results:Alignment of sequence data from each group revealed the following SNPs: At nucleotide 23 (A-C) and nucleotide 35 (T-G) in MC4R gene (sense mutation) of Alexandria and V-line high BW. Furthermore, we detected the following SNPs variation between the two lines: A SNP (T-C) at nucleotide 27 was identified by MC4R gene (sense mutation) and another one (A-C) at nucleotide 14 was identified by GHR gene (nonsense mutation) of Alexandria line. The results of individual BW at market (63 days) indicated that Alexandria rabbits had significantly higher BW compared with V-line rabbits. MC4R polymorphism showed significant association with high BW in rabbits.Conclusion:The results of polymorphism demonstrate the possibility to detect an association between BW in rabbits and the efficiency of the used primers to predict through the genetic specificity using the SNP of MC4R.

Association of single‐nucleotide polymorphism of melanocortin gene with feed intake in rabbit (Oryctolagus cuniculus)

“…In addition, the results of the nucleotide sequence analysis of the whole amplified fragments and the analysis of the means and standard errors of individual body weight at 63 days indicated a significant association between the MC4R SNPs and high body weight of rabbits at market (63 days of age). This finding is in agreement with El‐Sabrout and Aggag (). The rabbit MC4R gene is produced in the hypothalamus (melanocortin 4 receptor), in which plays an area responsible for controlling feed intake behaviour (appetite), which in turn effect on body weight.…”

Lohmann Kahverengi Tavuklarda Melanocortin Reseptörü Geninde Tek Nükleotid Polimorfizmi İle Yumurta Verim Özellikleri Arasındaki İlişki

“…It can stimulate the feed intake, metabolism and growth of egg, which in turn affect the egg weight. This finding is in agreement with ElSabrout and Aggag [17] , who found that MC4R plays an area responsible for controlling feed intake behavior, which in turn affect the body weight.…”

Identification of nucleotide variation of growth hormone gene in rabbit populations reared in Bulgaria

“…From a research point of view, one of the obvious candidate genes is the growth hormone gene (GH ), which has a critical role in animals' growth and tissue development (Amalianingsih and Brahmantiiyo, 2014;Abdel-Kafy et al, 2015;Zaghloul et al, 2019). Moreover, single nucleotide polymorphisms (SNPs) constitute a powerful method for detecting nucleotide sequence mutations in the amplified DNA (El-Sabrout and Aggag, 2017;El-Sabrout et al, 2019). Identification of SNPs in the rabbit has recently been started from re-sequencing of gene regions selected for different purposes (Fontanesi et al, 2012).…”

“…Regardless of the large amount of data, mutations were not detected in the sequenced regions encompassing exons 2, 3 and 4, introns 1 and 3, and parts of introns 2 and 4. Accordingly, it was suggested that there is a lack in information of polymorphisms of GH gene, considering that this rabbit gene is located on chromosome 19 (Abdel-Kafy et al, 2016;El-Sabrout and Aggag, 2017). Since the GH gene plays an important role in rabbit growth efficiency, we consider the detection of sequence variations within this gene to be critical for rabbit selection programmes and navigation of the breeding process in this species.…”