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.

Copyright © Wydawnictwo Akademii Rolniczej we Wroclawiu, ISSN 1505-0297

Krzęcio E. , Zybert A. , Koćwin-Podsiadła M. 2002. EFFECT OF SLAUGHTER SEASON ON SOME PORK QUALITY PARAMETERS FOR FATTENERS OF VARIOUS HAL GENOTYPES, EJPAU 5(2), #01.
Available Online: http://www.ejpau.media.pl/volume5/issue2/animal/abs-01.html

ABSTRACT

The studies were carried out on 158 Polish Landrace fatteners of various HAL genotypes, with average body weight 102 ±5.1 kg and 52.33% of leanness, slaughtered during two seasons: spring and summer as well as autumn and winter. Analysis of variance demonstrated statistically highly significant effect of HAL genotype on all the examined traits. The effect of slaughter season was found for pH₂₄, pH decrease range (pH₄₅–pH₂₄) and WHC. In respect to the pH₂₄, statistically significant interaction was found between both factors. Higher incidence of meat with PSE syndrome was observed in the spring–summer season (31.33%), which was reflected by more extensive drip loss from the LD muscle. In the group of HALⁿ allele homozygotes, an increase in the dynamics of glycolytic metabolism was observed, especially in relation to the stress–resistant (HAL^NN) group of animals. As a consequence of the reactions, the value of pH_45<

Key words: slaughter season, HAL genotype, meat quality..

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