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Fatty acid-binding proteins (FABP) belong to a superfamily of lipid binding proteins that exhibit a high affinity for long chain fatty acids and appear to function in metabolism and intracellular transportation of lipids. The current study was designed to investigate the effects of heart (H)-FABP gene on chicken growth and body composition traits. The Northeast Agricultural University divergent broiler lines for abdominal fat and a broiler X silkie F2 population were used in this study. Body weight and body composition traits were measured in the populations. Primers were designed according to the chicken H-FABP gene sequence. Polymorphisms between parental lines were detected by DNA sequencing. PCR-RFLP and PCR-fragment length polymorphism methods were developed to genotype the populations. The results showed that the H-FABP gene polymorphisms in the two populations were associated with abdominal fat percentage. It implied that H-FABP gene can be a candidate locus or linked to a major gene(s) that affects abdominal fat content in the chicken.
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Wang et al. (2007) studied this question.
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