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Associations of A-FABP and H-FABP Markers with the Content of Intramuscular Fat in Beijing-You Chicken

机译：北京油鸡A-FABP和H-FABP标记与肌内脂肪含量的关系

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摘要

This study has assessed the association of single nucleotide polymorphisms (SNP) identified in the adipocyte fatty acid binding protein (A-FABP) and heart-type fatty acid binding protein (H-FABP) genes with the content of intramuscular fat (IMF) in a population of male Beijing-You chickens. A previously described SNP in the chicken A-FABP gene had a significant (P < 0.05) effect on IMF content. Chickens inheriting the homozygous BB genotype at A-FABP had a significantly higher content of IMF in thigh muscles and breast muscles than did those inheriting the AA and AB genotypes. A novel SNP, identified here, in the H-FABP gene was also significantly (P < 0.05) associated with IMF content in thigh and breast muscle. Chickens inheriting the genotypes of DD and CD had much higher content of IMF than those inheriting the homozygous genotype of CC. Markers at the A-FABP and H-FABP genes were associated with IMF content in the studied population. Chickens inheriting the BB genotype at A-FABP, along with the CD genotype at H-FABP, produced muscles with a much higher content of IMF when compared with all other genotypes. A weak interaction between A-FABP and H-FABP was detected (P < 0.09) for IMF content in the tested population. The statistical significance of interaction is tentative because of the limited number of observations for some genotypic combinations. Markers identified within the A-FABP and H-FABP genes are suitable for future use in identifying chickens with the genetic potential to produce more desirable muscle with higher IMF content, at least in the population of Beijing-You male chickens.
机译：这项研究评估了脂肪细胞脂肪酸结合蛋白（A-FABP）和心脏型脂肪酸结合蛋白（H-FABP）基因中鉴定出的单核苷酸多态性（SNP）与肌内脂肪（IMF）含量的相关性。一群北京幼鸡。鸡A-FABP基因中先前描述的SNP对IMF含量具有显着（P <0.05）影响。在A-FABP遗传纯合BB基因型的鸡的大腿肌肉和胸肌中的IMF含量比在AA和AB基因型的鸡高。在H-FABP基因中，一种新的SNP在这里被发现也与大腿和胸部肌肉中的IMF含量显着相关（P <0.05）。遗传DD和CD基因型的鸡的IMF含量要高于遗传CC的纯合子型的鸡。在研究人群中，A-FABP和H-FABP基因的标记与IMF含量相关。与所有其他基因型相比，在A-FABP遗传BB基因型以及在H-FABP遗传CD基因型的鸡产生的肌肉中IMF含量要高得多。对于测试人群中的IMF含量，检测到A-FABP和H-FABP之间存在弱相互作用（P <0.09）。由于某些基因型组合的观察数有限，因此相互作用的统计学意义是暂定的。在A-FABP和H-FABP基因中鉴定出的标记物适合将来用于鉴定具有遗传潜力的鸡，至少在北京-北京公鸡群中具有产生更高IMF含量的更理想肌肉的遗传潜力。

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