Acta Agriculturae Boreali-Sinica

ACTA AGRICULTURAE BOREALI-SINICA ›› 2012, Vol. 27 ›› Issue (6): 15-19. doi: 10.3969/j.issn.1000-7091.2012.06.004

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Characteristics of TR-β mRNA in Skeletal Muscles of Duck and the Correlation with Muscles Weight

TAO Zhi-yun1, SHAN Yan-ju1, ZHU Chun-hong1, SONG Chi1, SONG Wei-tao1, CHEN Wen-feng2, LI Hui-fang1   

  1. 1. Jiangsu Institute of PoulTRy Science, Yangzhou 225125, China;
    2. Jiangsu Tengda Source Farming Compony Limited, Jiangyan 225538, China
  • Received:2012-09-10 Published:2012-12-28

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Abstract: The objective of this study was to investigate the developmental changes of TR-β gene expression in different duck breeds during embryonic and neonatal period in pectorales and legs and their effects on weight of pectorals and legs． Real time PCR was applied to compare the expression level of thyroid hormone receptor beta ( TR-β) mRNA in pectorales and legs of Gaoyou ducks and Jinding ducks at the 17，21，25，27 embryonic day and the age of 7 d． The results showed that， the profiles of TR-β mRNA of muscle in two duck breeds were consistent during early development，but there are some different in pectorales and legs． The TRend of TR-β mRNA is from low to high in pectorales and legs during embryonic， the highest level is in 27 embryonic day． After hatch， the level of TR-β mRNA is decline in pectorals ( P ＜ 0． 01),but keep high level in legs( P >0． 05). These results indicate that the expression of TR-β gene was significantly affected by age and organization，but not affected by breed． During embryonic and neonatal period of ducks， the expression of TRα mRNA in pectorals may play a positive regulatory role on the weight of muscles and embryo or body and the opposite regulatory role in legs． The correlation analysis showed that there was a sTRong positive linear correlation between the expression of TR-β mRNA and muscle weight in early development of duck． The results indicate that during embryonic and neonatal period of ducks， the expression of TR-β mRNA in pectorals may have a positive regulatory role on the weight of muscles．

Key words: TR-&beta, gene, Embryonic period, Skeletal muscles

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TAO Zhi-yun, SHAN Yan-ju, ZHU Chun-hong, SONG Chi, SONG Wei-tao, CHEN Wen-feng, LI Hui-fang. Characteristics of TR-β mRNA in Skeletal Muscles of Duck and the Correlation with Muscles Weight[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2012, 27(6): 15-19. doi: 10.3969/j.issn.1000-7091.2012.06.004.

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