[Association between single nucleotide polymorphism of MC4R gene and carcass traits in rabbits].
Single nucleotide polymorphisms in the coding sequence of melanoeortin-4 receptor (MC4R) gene were detected by PCR-SSCP and DNA sequencing method in Harbin white rabbit, Tianfu black rabbit, Belgian hare, ZIKA rabbit, and California rabbit breeds. A-->G conversion mutation at base position 237 was found with high frequency in Harbin white rabbit, Belgian hare, and Zika rabbit and low frequency in Tianfu black rabbit and California rabbit. The allele A was pre-dominant allele for each of meat rabbit breeds. AA genotype frequency was higher than AG genotype in the five studied rabbit breeds. GLM analysis for the effect of genotypes on performance traits demonstrated that AG genotype was significantly associated with body weight, eviscerated weight and feed conversion efficiency (P<0.05), but not significantly associated with cooking loss (P>0.05). It was concluded from the results that MC4R gene could be a candidate modifier gene that affects or controls body weight and carcass traits of rabbit.
Jiang
Mei-Shan
MS
College of Animal Science and Technology, Sichuan Agricultural University, Ya'an 625014, China. jms.1699@163.com
Chen
Shi-Yi
SY
Lai
Song-Jia
SJ
Deng
Xiao-Song
XS
Chen
Yun
Y
Wan
Jie
J
D000818:Animals; D001835:Body Weight / Q000235:genetics*; D005787:Gene Frequency; D005838:Genotype; D016133:Polymerase Chain Reaction; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D018807:Polymorphism, Single-Stranded Conformational / Q000235:genetics; D011817:Rabbits; D044105:Receptor, Melanocortin, Type 4 / Q000235:genetics*; D017422:Sequence Analysis, DNA
D044105:Receptor, Melanocortin, Type 4