Abstract
Major qualitative parameters of Landrace pig carcasses are presented in this paper. Phenotypic correlation between carcass quality indices and meat yield of carcass sides was investigated. Fatteners included in this research (117) were reared in non-conventional conditions, on deep litter, and as litter straw was used. Meat yield of pig carcass sides was evaluated on the slaughter line using the 'two point' method (Dzinic et al. 2004) and mathematical model using FOM-device (defined by Petrovic et al. 1996). Meat yield of carcass sides estimated using FOM was 56,29%, and by method of 'two points' 53,16%. Of basic quality parameters of pig carcasses the strongest correlation assessed using FOM device was established between meat yield of carcass side and thickens of fat tissue - LF and RF, and using the method of two points, between meat yield of carcass side and thickness of fat tissue - X1 i X2. Established correlations were negative, strong and statistically significant (-0,85**; -0,87**and -0,97**; -0,77**). Results of the assessment of quality of pig carcasses obtained using method of two points (53,16%) and by instrumental method on right carcass sides using FOM device (56,29%) differed, which indicates need to develop new equations for evaluation/assessment of share of muscle tissue in pig carcasses. .
Highlights
In scientific paper, it is not sufficient only to establish values of certain parameters, and to determine the relation between certain traits
Mean values and variability of parameters of pig carcass quality are presented in table 1
Luković et al (2000), Timanović (2003), Pulkrábek et al (2003), Pulkrábek et al (2004), Kušec et al (2006) and Kosovac et al (2007) in their research stated lower values of meat percentage in carcass sides (49,20-55,52%) compared to values obtained in this research with FOM device, which are in concordance with vlaues obtained by Tomović, (2002)
Summary
It is not sufficient only to establish values of certain parameters, and to determine the relation between certain traits. Considering the increase of economical significance of fattening of meat pigs, in researches by some authors dependence between parameters of the quality of pig carcasses and meat yield of carcass sides was established (Senčić et al 2002; Pulkrábek et al.,2004). By applying regression equations, it is possible to determine the quantity of meat and fat tissue in carcass sides, without detailed dissection, which is done in practice since cost of production and subsequent work are reduced. According to statements by same authors, regression coefficients between total increase of muscle tissue in carcass in relation to the same tissue in individual carcass parts show that it is possible to produce meat pigs with different disptribution of tissues in the carcass according to market demands and using selection measures
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