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A study of associations of the H-FABP genotypes with fat and meat production of pigs

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Urban T., Mikolasova R., Kuciel J., Ernst M., Ingr I.

Journal of Applied Genetics

2002

vol. 43

issue 4

505-509

Although the content of intramuscular fat (IMF) influences significantly meat quality, it can be estimated only after the slaughter of animals. Variants of the H-FABP gene were suggested as candidate genes influencing the variability of IMF. The effect of H-FABP ? HinfI polymorphism on the content of IMF, backfat thickness, the weight and percentages of major meat parts and of the leg in carcass weight was studied in a group of 97 pigs (46 gilts and 51 barrows) of Large White and Landrace breeds using the test of fattening capacity and carcass value. In the set of experimental animals, the frequencies of genes were H = 0.75 ? 0.03 and h = 0.25 ? 0.03. Biometric analyses did not corroborate differences among different H-FABP ? HinfI genotypes and all the traits under study. Only in genotypes HH and Hh the differences between least-square means of phenotypic IMF values under study were close to the limit of significance (P = 0.06).

Prediction of meat quality from biopsy in live pigs with different RYR1 genotypes

100%

Kuciel J., Urban U. T., Urban T., Krenkova K. J., Krenkova J.

Journal of Applied Genetics

2000

vol. 41

issue 4

267-274

To predict meat quality after slaughter, biopsy samples were taken from musculus longissimus lumborum et thoracis of live pigs at approximately 40 kg and 80 kg of weight. The obtained values from biopsies for pH1 and EC50 (electric conductivity) were compared with measurements after slaughter at a weight of approximately 110 kg. RYR1 genotypes were determined from blood samples using PCR-RFLP. Mating of Nn sows with two nn boars resulted in 72 Nn and 40 nn offspring. Significant differences between the two genotypes were found for pH1 and EC50 values for the three weights. The coefficients of correlation for the Nn genotype of the RYR1 gene between the values after slaughter and both the first and the second biopsy for pH1 and EC50 were very low (r = 0.06, r = 0.14, and r = 0.26, r = 0.26, P 0.05). For the nn genotype were r = ?0.23, r = ?0.15, and r = ?0.25, r = ?0.11 respectively. The values of pH1 and EC50 were highly correlated (r = ?0.52 to ?0.84, P 0.001) both within biopsies and after slaughter.

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2 Journal of Applied Genetics

1 2002

1 2000

2 Kuciel J.

2 Urban T.

1 Ernst M.

1 Ingr I.

1 Krenkova J.

1 Krenkova K. J.

1 Mikolasova R.

1 Urban U. T.

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A study of associations of the H-FABP genotypes with fat and meat production of pigs

Prediction of meat quality from biopsy in live pigs with different RYR1 genotypes