| Autor: |
Yun, MA, Shang-Zhong, XU, Xue, GAO, Hong-Yan, REN, Ya-Ping, XIN, Shu-Xin, GAO, Ying-Han, ZHANG |
| Zdroj: |
Acta Genetica Sinica; January 2006, Vol. 33 Issue: 12 p1096-1104, 9p |
| Abstrakt: |
The complete CDS sequence of the bovine FABGLgene was determined by homology cloning approach combined with RT-PCR and 3′- and 5′-RACE. The results of sequence analysis and bioinformatics study showed that this cDNA contained 994 nucleotides, with a 780 bp open reading frame (ORF) flanked by a 16 bp 5′-UTR (incompletely) and a 198 bp 3′-UTR. The deduced amino acid sequence (260 AA) shows 88% identity with the corresponding sequence in humans. Two single nucleotide substitutions, one located in intron 5 (I5) at position 1 065 bp (Y = C/T) (GenBank: DQ409814) and the other in intron 8 (I8) at position 1 792 bp (R = A/G), were detected using the PCR-SSCP method. Analysis of the allele frequencies of the two polymorphic sites in three different cattle breeds (Angus, Hereford, and Simmental) with different genotypes showed large differences: in locus I8, cattle with the GGgenotype showed higher beef performance index (BPI) (4.283 ± 0.475 kg/cm) in comparison with cattle with the AAgenotype (4.008 ± 0.465 kg/cm) ( P= 0.01). Regarding the ribeye area, cattle with the GGgenotype showed significantly higher ribeye area (73.380 ± 13.005 cm 2) compared with cattle with the AAgenotype (67.744 ± 12.777 cm 2) ( p= 0.05). In locus I5, some associations for the average daily gain (ADG) were found at the significance level of 0.01 between three different genotypes ( CC, CT, TT): cattle with the TTgenotype showed the highest ADG (0.652 ± 0.330 kg/d), whereas cattle with the CCgenotype showed the lowest ADG value (0.421 ± 0.178 kg/d). |
| Databáze: |
Supplemental Index |
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