Research Note: Association of IGF-1R gene polymorphism with egg quality and carcass traits of quail (Coturnix japonica)

Research Note: Association of LEPR gene polymorphism with growth and carcass traits in Savimalt and French Giant meat-type quails

“…Quails are economic poultry extensively reared in China, which has characteristics such as high egg production performance, high nutritional value of both eggs and meat, significant medicinal properties, short growth cycle, and substantial economic benefits ( Bai et al, 2023 ; Wang et al, 2023 ). Quails are widely welcomed by consumers worldwide for its rich minerals, high protein, beneficial fatty acids and other nutrients compared with the other poultry species such as chickens and ducks ( Bai et al, 2023 ). With the improvement of living standards, people have gradually developed a healthy dietary habit of high protein and low cholesterol.…”

Research Note: Association of insulin-like growth factor 1 receptor gene polymorphism with production performance in Savimalt and French Giant meat-type quails

“…The reaction conditions were as follows: initial denaturation at 95°C for 4 min, followed by 35 cycles of 95°C for 40 s, annealing for 56°C for 45 s, extension at 72°C for 35 s, and a final extension at 72°C for 10 min. The reaction system was stored under 4°C ( Bai et al, 2023a ). Then, the amplified samples of the IGF-1R gene were sent to Beijing Tsingke Biological Co., Ltd. for sequencing.…”

“…Quails offer high nutritional value (minerals, high protein, and beneficial fatty acids), making them a sought-after choice for consumers in recent years ( Quaresma et al, 2022 ). Additionally, quails are small economic poultry that are extensively farmed in China due to their numerous economic advantages ( Bai et al, 2023a ). They possess several distinctive characteristics, including a short growth cycle, high reproductive ability, and exceptional egg production performance.…”

“…However, it is important to note that there is a limited amount of research conducted on quail breeding domestically and internationally, particularly at the molecular level. This area of study is still in its early stages of development ( Priti and Satish, 2014 ; Bai et al, 2023a ). In recent years, marker-assisted selection has emerged as a preferred breeding method over traditional techniques for improving animal economic traits ( Abd El-Hack et al, 2018 ).…”

Genome-Wide Association Study Revealed Putative SNPs and Candidate Genes Associated with Growth and Meat Traits in Japanese Quail

“…Over the last years, there has been a rise in the number of studies that employ SNPs as genetic markers and genome-wide SNP genotyping [ 10 , 35 ]. Using this technique and the genome-wide association study (GWAS) approach in quail, significant SNPs and putative genes have been identified in terms of their association with performance traits [ 36 , 37 ], behavior [ 38 , 39 ], plumage color [ 10 ], reproductive traits [ 40 ], and egg quality [ 41 , 42 ]. The lack of commercial SNP arrays for Japanese quail makes it difficult to search for SNPs and identify genes associated with traits important for breeding, suggesting other SNP genotyping approaches [ 43 ].…”