Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

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Kortz J. , Szaruga R. , Kapelański W. , Kurył J. , Rybarczyk A. , Natalczyk-Szymkowska W. 2003. EFFECT OF RYR1 GENOTYPE ON CARCASS LEANNESS AND PORK QUALITY, EJPAU 6(2), #07.
Available Online: http://www.ejpau.media.pl/volume6/issue2/animal/abs-07.html

ABSTRACT

The studies were carried out on 98 carcasses obtained from pure-bred Polish Landrace (PL) hogs, from crosses of (PL x Polish Large White) sows with Pietrain boars, as well as from crossbreds of Dutch breeds (Landrace x Large White) x Large White. The pigs were slaughtered as soon as they reached 103 kg of body weight, and during the slaughter blood samples were collected for DNA analysis in order to identify individuals carrying the stress-sensitivity gene (RYR1). The carcasses were dissected immediately after cooling. Samples of LD muscle from the right carcass, at the area of the 1st to 4th lumbar vertebra, were collected for pork quality evaluation, i.e. sensory analysis of raw meat, as well as pH₁, pH_k, and electric conductivity measurements. Moreover, drip loss, water-binding and meat plasticity were determined, and drip index as well as colour parameters were obtained. Basic chemical composition was also assayed and the content of water-soluble protein was determ

Key words: pigs, RYR1 genotype, meat quality..

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