Journal
BRAZILIAN JOURNAL OF POULTRY SCIENCE
Volume 20, Issue 3, Pages 447-454Publisher
FACTA-FUNDACIO ARNCO CIENCIA TECNOLOGIA AVICOLAS
DOI: 10.1590/1806-9061-2017-0661
Keywords
Fat deposition; PPARG; transcription factor; SNP; slow-growing chickens
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Funding
- National Science Centre [2012/07/B/NZ9/02206]
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The expression of four transcription variant of peroxisome proliferator-activated receptor gamma gene (PPARG) (XM_015292931.1; XM_015292932.1; XM_015292933.1 and NM_001001460.1) in the liver of broilers was measured and its correlation with abdominal fat weight and relative abdominal fat content was investigated. The study was conducted with 92 slow-growing crossbred chickens (Cobb males x indigenous Green-legged Partridge female chickens) divided into fat and lean groups, according to their abdominal fat yield. The NM_001001460.1 transcriptwas upregulated with ratio of means 4.26 (p=0.01) in the fat group in relation to the lean group. Expression of this transcript was highly correlated with relative abdominal fat content (0.71, p= 0.01) and abdominal fat weight (0.59, p= 0.01). Two SNPs are located in putative transcription factor binding sites. Mutation -991C>A disrupts PPAR while mutation -884C>T disrupts C/EBP putative binding site. The gene expression analysis of PPARg showed that the expression of the transcripts (NM_001001460.1) was more than four times higher in fat than in lean chickens. These results point out that the peroxisome proliferator-activated receptor gamma NM_001001460.1 transcript could be candidate gene for determination of abdominal fat deposition in the chickens.
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