An influence of lean meat kontent on a kontent of intramuscular fat in MLLT of tested hybrid pigs

Abstract

The aim of the study was to evaluate a content of intramuscular fat in musculus longissimus lumborum et thoracis (MLLT) of tested carcass pig hybrids (two combinations of multi-breed commercial hybridization) – (CLW x L) x (D x H) (n = 50) and (BU x L) x D (n = 43).Determined values of a content of intramuscular fat of each combination were noted according to sex and according to group of sort in SEUROP system (% of lean meat). High conclusive difference (P≤0.01) was found in measured values of IMT between combinations (CLW x L) x (D x H) (3.39%) and (CLW x L) x D (2.69%). Small difference was determined between sex in both combinations – gilts showed higher values of IMT content contrary to hogs.The highest measured value of IMT content (3.29%) was reached in combination (CLW x L) x (D x H) in class E, the lowest average value (2.48%) was reached in class S. In class U (R) was determined a content of IMT on a level of 2.56% (3.08%).The highest measured value of IMT content (3.10%) was reached in combination (CLW x L) x D in class S, the lowest average value (2.58%) was reached in class E. In class U (R) was determined a content of IMT on a level of 2.83% (2.67%).Statistical conclusive (P≤0.05) low negative correlation (r = –0.2107) was determined between % IMT and a lean meat percentage. Low negative correlation (r = –0.1359) was determined between % IMT and muscle depth.Low positive correlation (r = 0.1658) was determined between % IMT and back fat thickness.

Keywords

• content of lean meat
• intramuscular fat
• carcass hybrid