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The aim of this study was to evaluate MYH7 single nucleotide polymorphism (SNP) (NC_010449.4: g.7:75667956G>A) in relation to growth and carcass traits in pigs reared in Poland. Previous study has shown that g.7:75667956G>A substitution in pigs influences miR-208b and MYH7 expression, and is associated with proportion of muscle fibre types. The presented study was conducted on 582 pigs belonging...
Genetic associations of reproductive traits in pigs. In the field of genetics, one of the main research area in relation to animal reproduction is the identification of genes or genomic regions influencing reproductive phenotypes. The genes analysed for the determinants of their fertility are among other: LEP, PRL, PRLR, RBP4. With the use of genetic markers, it is possible to identify of both males...
Association of CAST and RYR1 genes polymorphism with carcass and meat quality in crossbreed pigs with a share of Pietrain breed. The aim of this study was to determine the effect of the calpastatin (CAST/TaqI) and ryanodine receptor (RYR1) genes polymorphism on carcass and meat quality traits in Pietrain crossbred pigs. The polymorphism in CAST and RYR1 genes was detected using the PCR-RFLP (Restriction...
Cystatin B gene is a candidate gene for carcass and meat quality traits of pigs and belongs to the family 1 of cysteine proteinase inhibitors. The enzyme is a cathepsin inhibitor and the proteolytic cystatin/cathepsin system plays an important role in the growth and development of muscles.Investigations presented here covered 707 pigs from different genetic groups reared in Poland. The aim of this...
The objective of the present study was to analyze the level of intramuscular fat (IMF) in loin (musculus longissimus dorsi) and ham (musculus semimembranosus) and the level of subcutaneous fat in these cuts depending on breed, age and the expression level of FABP3 and LEPR genes. The results obtained showed that only the breed influenced on the level of both intramuscular and subcutaneous fat to the...
The aim of this study was to determine the effect of the calpastatin (CAST) and ryanodine receptor (RYR1) genes polymorphism on carcass and meat quality traits in Pietrain crossbred pigs. No significant differences in the traits examined were identified between pigs with the genotypes CT and CC at the locus RYR1. A significant association occurred between the polymorphisms CAST/PvuII and CAST/RsaI,...
Celem niniejszych badań była charakterystyka genetyczna stada krów na podstawie polimorfizmu w regionie promotorowym genu IGF-1 oraz ustalenie ewentualnych zależności pomiędzy wykrytym polimorfizmem a cechami użytkowości mlecznej. Badaniem objęto 185 krów rasy polska holsztyńsko-fryzyjska odmiany czarno-białej. Polimorfizm genu IGF-1 oznaczano metodą ACRS-PCR. W analizowanym stadzie stwierdzono następujące...
The studies were carried out on 114 carcasses of hybrid porkers after Camborough 22 sows and PIC 337 boars classified in classes of the EUROP system.The carcasses of PIC pigs free from stress susceptibility gene (CC/RYR1) and monomorphic at the leptin gene (TT T3469C and GG G2728A) classified into meatiness class S, E and U differed significantly in respect of meatiness and backfat thickness but did...
The first study of quantitative trait loci (QTL) in pigs showed that genetic factors controlling important economic traits were located on swine chromosome 4. In recent years, the theory that chromosome 4 in pigs contains many QTL loci affecting growth, carcass and meat quality has been confirmed. It would be interesting to show porcine chromosome 4 as a genetic marker for carcass and meat quality...
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