Effects of breed, postnatal development, and nutrition on mRNA expression of the FTO gene in porcine muscle and its relationship with intramuscular fat deposition
文献类型: 外文期刊
作者: Tao, X. 1 ; Men, X. M. 1 ; Deng, B. 1 ; Xu, Z. W. 1 ;
作者机构: 1.Zhejiang Acad Agr Sci, Inst Anim Husb & Vet Sci, Hangzhou 310021, Zhejiang, Peoples R China
关键词: pig breeds;development ages;FTO mRNA expression;IMF;pig
期刊名称:CZECH JOURNAL OF ANIMAL SCIENCE ( 影响因子:1.267; 五年影响因子:1.428 )
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收录情况: SCI
摘要: The effects of breed, development, and nutrition on mRNA expression of the fat mass and obesity-associated gene (FTO) and its relationship with intramuscular fat (IMF) content in porcine muscle (m. longissimus dorsi; m.l.d.) were estimated Purebred Jinhua, Zhongbai, Yorkshire, Duroc, Duroc x Zhongbai (DZ), and Duroc x Yorkshire x Landrace (DYL) pigs were used to investigate the effect of breed. Pigs weighing 2.5,10, 20,40, 60, and 100 kg were selected to study the effects of different stages of development. To study the effect of nutrition, four diets were selected: corn-soybean (CS), CS with 1.2% conjugated linoleic acid (CLA) or 0.05% creatine monohydrate (CMH), and barley-soybean (BS). All eighty animals were slaughtered, and m.l.d. samples werecollected to examine FTO mRNA expression and IMF content. Results showed that breed significandy affected FTO mRNA expression and IMF content. FTO mRNA expression in the studied pigs was in the order: Zhongbai and Yorkshire > Duroc and DZ > Jinhua and DYL. The IMF content ordered by breed was Duroc > DZ > DYL > Jinhua > Zhongbai > Yorkshire. Both FTO mRNA expression and IMF content increased with age of the pigs, with the greatest difference seen between 100 kg pigs and all other weights. In the study,none of the four diets had a significant effect (P > 0.05) on FTO mRNA expression or IMF content. The study demonstrated that FTO mRNA expression increased with increasing body weight and was significandy affected by the breed of pigs. The results showedthat FTO mRNA expression had an inconsistent correlation with IMF content between breeds and developmental ages.
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