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The value of the routine analyses, applied until present, of whole blood, serum and urine for bioelements is limited. The blood mineral level does not often correspond to the content of minerals in the whole body because the composition of plasma results from supplementation of deficiencies by different homeostatic mechanisms. Moreover, the blood concentration of bioelements is relatively low and...
Observations were carried out on 31 Black-and-White (BW), 16 Charolaise (CH) and 18 Simmental (S) bulls at the age of 12-15 months. Determined were: taste, aroma, tenderness and consistency of longissimus dorsi muscle. Fragment of the bovine CATD gene encoding procathepsin D was amplified and subjected to RFLP analysis with restriction nuclease ApaI. Only two genotypes were identified:GG and GA, the...
Considered were four dairy farms. Two were certified organic farms and two were conventional – one with intensive and one with extensive production system. Observations were conducted on 10 Holstein-Friesian (HF) cows from each farm while from conventional farm with extensive production additional 10 Polish Red (PR) cows were observed. Samples of milk and hair for determination of minerals were collected...
The aim of the study was to estimate the content of functional components of milk in some major cattle breeds. The study was performed in two parts. The first was conducted on Black-and-White (BW) and Polish Red (PR) cows. All animals were kept as one herd at Popielno, and maintained according to the traditional extensive feeding system. Bulk milk samples were used, representing the milk of 349 Simmental...
Calpastatin (CAST) is a specific inhibitor of the ubiquitous calcium-dependent proteases – μ-calpain and m-calpain, found in mammalian tissues. The level of components included into the calpain-calpastatin system determine the rate of post mortem tenderization of meat.In the coding region of the bovine CAST gene (CAST) the new nucleotide sequence polymorphism was found being a substitution G→C at...
The study based on use of VIA for estimation of beef quality from four beef breeds: Limousine, Charolaise, Angus, Hereford and cross-breed Black-andWhite x Piemontese were performed. The average values of colour components R and G estimated with a VIA method differed statistically between the investigated breeds. The marbling of the MLD cross-section was for each beef breed significantly diversified...
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