Objective of this paper was to evaluate phenotypic variability of carcass side traits and quality of meat of fatteners (male castrated heads) of Moravka breed (M) and Mangalitsa (swallow-belly Mangalitsa-LM). The quantity and content of meat were determined based on dissection of left carcass sides (Walstra and Merkus, 1996). Also, nutritive properties of musculus longissimus dorsi (m.l.d.) were established. Obtained data were processed using GLM procedure of the program package SAS 9.1.3 (SAS Inst.Inc., 2002-2003). Results of the study show that Moravka fatteners had longer carcass sides (+6.82 and + 5.00 cm) compared to Mangalitsa breed, corrected to average body weight at slaughtering. Fatteners of M breed had in average higher total mass of back-loin part (+0.685, P<0.05) and average quantity of muscles in the same part of carcass side (+0.631 kg, P<0.01), compared to fatteners of LM breed. Also, they had higher quantity of muscle in belly-rib part (+0.237 kg, P<0.05) compared to LM. Share of muscle tissue in back-loin and belly-rib carcass side parts corrected for WCC, was higher in M carcass sides than in LM (P<0.01). Conversely, muscle tissue content in shoulders of Mangalitsa was higher (+4.8% ; P<0.05) than in Moravka. Share of muscle tissue in carcass sides of M pigs was by 4.3% higher compared to LM carcass sides. In m.l.d. of Moravka water content was higher (+6.1%, P<0.01), content of total lipids (-6.5%, P<0.05) and cholesterol (-19.68 mg/100 g, P<0.001) was lower than in Mangalitsa.

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Objective of this paper was to evaluate phenotypic variability of carcass side and pork quality traits of fatteners (male castrated and female heads). Investigation included 12 pigs per group of Mangalitsa (Genotype 1), Moravka (Genotype 2), cross-breed Mangalitsa with Moravka (Genotype 3) and cross-breed Moravka with Duroc boar (Genotype 4). Results show that Mangalitsa had lower daily gain (268 g) than other genotypes (p<0.001). The greatest difference for fat thickness was determined between Genotype 1 and Genotype 4. As expected, the thinnest fat and maximum value for gain and depth of Musculus longissimus (ML) had the Genotype 4. The highest value for the ML surface was found in Genotype 4(47.52 cm2) whereas for the same trait in Mangalitsa the lowest value was observed (24.16 cm2). Mangalitsa had significantly lower L*, a* and b* values of ML compared with all other groups (p<0.001). Considering the low production performance of indigenous pig breeds, crossbreeding with the Duroc breed will contribute a improvement of growth and carcass traits.

The objective of this study was to determine the chemical composition and fatty acid content in m. longissimus dorsi (MLD) of two indigenous pig breeds (ML -Swallow-belly Mangalitsa and M -Moravka) reared in free range farm conditions and fed complete mixtures used for commercial meat pig genotypes. The body mass of ML and M pigs at slaughter was,on average, 107.14 and 107.61 kg, respectively. In MLD of M pigs, more total fat was measured compared to ML breed (6.96 % compared to 5.10 %, P<0.05). Protein content in MLD of ML pigs was higher by +0.92 % (P<0.01) compared to M pigs. Male castrates of M pigs had more fat compared to gilts of the same breed (8.64 compared to 5.29 %), and the 3.35 % difference between mean values was statistically significant (P<0.05). The breed of pigs influenced the total saturated fatty acids (P=0.011) and mono-unsaturated fatty acid (P=0.003) contents, but not the content of polyunsaturated fatty acids (P=0.325). In the case of saturated fatty acids in the MLD of ML and M pigs, the most common were C16:0 (25.05 % and 25.53 %) and C18:0 (12.73 % and 14.40 %). The MLD of M pigs contained 1.67 % more stearic acid compared to ML pigs (P=0.004). Pigs of ML, compared to M pigs, had more C18:1cis-9 (+2.31 %), C16:1 (+0.49 %), C17:1 (+0.10 %) and less C20:1cis-11 (-0.25 %). The content of two essential fatty acids, C18:2n-6 and C18:3n-3, did not vary according to breed or sex of pigs (P>0.05). The n-6/n-3 ratio was higher than optimal (18.7 for breed ML and 13.7 for M).