Meat content in pigs estimated by various methods and compared with objective lean meat content
2002
Krska, P. | Bahelka, I. | Demo, P. | Peskovicova, D. (Vyskumny Ustav Zivocisnej Vyroby, Nitra (Slovak Republic))
The aim of this study was to determine the accuracy of apparatuses (Piglog-105, SonoMark SM-100 and Aloka 500) and Two points (TP) method, used for estimation of lean meat content (LMC) of pigs, in comparison with the dissection method. The weight of muscle tissue and fat tissue with skin and bones was assessed by half-carcass dissection and expressed as the percentage of the total half-carcass weight. The average slaughter weight of 128 pigs was 104.5 kg. The average dissection results were as follows: back fat thickness 2.28 cm, eye muscle area 43.61 square cm, LMC 55.67 %. In comparison with these results, the LMC estimations obtained by instrumental methods were as follows: Piglog-105 higher by 0.36 %, SonoMark SM-100 higher by 1.9 %. The new regression equation for Aloka 500 showed LMC 55.83 %. From special regression equations (sex, production type), only the regression for meat type is recommended. LMC estimated by TP method was 55.48 %. Correlation coefficients between the dissection method and estimated LMC (Piglog, SonoMark, Aloka, TP) were 0.776, 0.759, 0.894 and 0.793, respectively.
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