EVALUATION OF LEANNESS IN VIVO AND IN VITRO OF PIGS

ČEDOMIR RADOVIĆ, MILICA PETROVIĆ, NENAD BRKIĆ, BRANISLAV ŽIVKOVIĆ, NENAD PARUNOVIĆ, DRAGAN RADOJKOVIĆ, MARIJA GOGIĆ

Abstract: The study aimed to determine the accuracy of the measurements (fat thickness, depth of musculus longissimus (ML) and estimated lean meat) by ultrasound apparatus PIGLOG 105 compared with dissection (by the Weniger method) and the applicable regulations on the quality of slaughtered pigs and categorization of pork meat (Official Gazette, 2/1985). In order to determine the accuracy of the measurement using PIGLOG 105, 170 animals were dissected. When performing dissections, tests were carried out on fattening pigs of following genotypes: Swedish Landrace (n = 70) and F1 (SLxLY) (n = 100) (castrated
males, n = 80; female animals, n = 90). It was found that the values obtained by measuring fat thickness in vivo were higher than the values determined in vitro. Estimated lean meat content in vivo was lower (51.87%) compared to the values determined by dissection (55.72%). The differences found between PIGLOG 105, dissection and Regulations in regard to fat thickness, depth of ML, yield and share of meat in carcass sides were statistically significant (P <0.01).

Keywords: carcass side leanness; dissection; fat thickness; PIGLOG 105

Date published: 2023-02-01