Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

3 Journal of Applied Genetics

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

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

tom 41

nr 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.

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

100%

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

Journal of Applied Genetics

2002

tom 43

nr 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).

Associations of the IGF2 gene with growth and meat efficiency in Large White pigs

86%

Kolarikova O. , Putnova L. , Urban T. , Adamek J. , Knoll A. , Dvorak J.

Journal of Applied Genetics

2003

tom 44

nr 4

509-513

The insulin-like growth factor 2 gene (IGF2) has been described in several studies as a candidate gene for meat efficiency in pigs. IGF2 is a member of the growth factors family and has an effect on development of muscle tissue. The effect of IGF2 gene polymorphism on meat efficiency was analysed in a population of 121 Large White pigs. A PCR-based test and RFLP methods were used for detection of genotypes. Allele A, lacking the restriction site, was characterised by the presence of a 0.9-kb fragment. In allele B, the amplimer was cut into a 0.8-kb fragment and some barely detectable fragments. The statistical analysis was carried out according to the General Linear Model procedure. The genotype frequencies observed were: 1.65%, 33.88%, 64.46% for AA, AB and BB genotypes, respectively. There was a significant difference (P 0.05) between the AB and BB genotypes in live weight before the test. A significant association between AB and BB genotypes and body weight before the test was found. No significant difference in other traits of growth and meat efficiency was observed (P > 0.05).