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1

Cytogenetic mapping of DGAT1, PPARA, ADIPOR1 and CREB genes in the pig

100%
Szczerbal I., Lin L., Stachowiak M., Chmurzynska A., Mackowski M., Winter A., Flisikowski K., Fries R., Switonski M.
Journal of Applied Genetics
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2007
|
vol. 48
|
issue 3
73-76
EN
In the present study we show FISH localization of 4 porcine BAC clones harbouring potential candidate genes for fatness traits: DGAT1 (SSC4p15), PPARA (SSC5p15), ADIPOR1 (SSC10p13) and CREB (SSC15q24). Until now the CREB and ADIPOR1 genes are considered to be monomorphic, DGAT1 is highly polymorphic, while for the PPARA gene only 1 SNP was identified. Assignment of the studied genes in relation to QTL chromosome regions for meat quality in pig chromosomes SSC4, SSC5, SSC10 and SSC15 is discussed.
2

Genes associated with long-chain omega-3 fatty acids in bovine skeletal muscle

100%
Perez R., Canon J., Dunner S.
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vol. 51
|
issue 4
479-487
EN
Long-chain omega-3 fatty acids (n-3 FAs) influence meat tenderness, juiciness, and flavor, and are beneficial to human health. The percentage of long-chain n-3 FAs in total FAs is termed the omega-3 index (O3I). It is thus of great interest to favor rising this index in bovine skeletal muscle, to obtain healthier, tastier, and more nutritive meat. This study was aimed to detect transcriptomic variations related to O3I in muscles in 15-month-old males of 4 Spanish cattle breeds raised under the same conditions. Through the analysis of extreme O3I phenotypes, 3 genes of interest (AANAT, UCP2 and AHA1) were identified. AANAT and UCP2 were strongly up-regulated, while AHA1 was repressed in animals with a high O3I. Moreover, gene expression differed between GDF8-null animal muscles (tested for nt821del11 and Q204X mutations) and the wild-type muscles for genes GDH1, IGF2R, FADS1, ASPH, and AIM1, all showing down-regulation in Asturiana de los Valles calves with muscle hypertrophy (GDF8-null). This shows that in GDF8-null animals other pathways are used for FA synthesis.
3

Cytogenetic mapping of DGAT1, PPARA, ADIPOR1 and CREB genes in the pig

100%
Szczerbal I., Lin L., Stachowiak M., Chmurzynska A., Mackowski M., Winter A., Flisikowski K., Fries R., Switonski M.
Journal of Applied Genetics
|
2007
|
vol. 48
|
issue 1
73-76
EN
In the present study we show FISH localization of 4 porcine BAC clones harbouring potential candidate genes for fatness traits: DGAT1 (SSC4p15), PPARA (SSC5p15), ADIPOR1 (SSC10p13) and CREB (SSC15q24). Until now the CREB and ADIPOR1 genes are considered to be monomorphic, DGAT1 is highly polymorphic, while for the PPARA gene only 1 SNP was identified. Assignment of the studied genes in relation to QTL chromosome regions for meat quality in pig chromosomes SSC4, SSC5, SSC10 and SSC15 is discussed.
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