Slaughter traits and carcass characteristics of Travnik pramenka lambs reared in Bilogora

Abstract

Cilj predmetnog istraživanja bio je utvrditi klaoničke pokazatelje, odlike trupova te neke pokazatelje kakvoće janjećeg mesa (pH vrijednost i boju mišićnog tkiva). Osim toga, cilj ovog istraživanja bio je utvrditi utjecaj spola na klaoničke pokazatelje janjadi, odlike trupova i pokazatelje kakvoće janjećeg mesa. U tu svrhu u mjesecu travnju 2017. godine zaklano je ukupno 70 janjadi travničke pramenke, od toga 48 muške i 22 ženske, prosječne dobi pri klanju od oko 100 dana. Prosječna tjelesna masa janjadi izmjerena neposredno prije klanja bila je 21,85 kg s tim da je muška janjad bila statistički značajno (P<0,05) teža od ženske (22,47 kg : 20,38 kg). Utvrđena je prosječna masa janjećeg trupa od 11,04 kg koja je bila statistički značajno veća (P<0,05) u muških (11,32 kg) u odnosu na trupove ženske janjadi (10,42). Iako je randman ženske janjadi (51,04%) bio veći od onog utvrđenog u muške travničke janjadi (50,33%) razlika nije bila statistički značajna. Temeljem utvrđenih mjera klaonički obrađenih trupova, trupovi istraživane janjadi travničke pramenke pripadaju kategoriji lakih janjećih trupova. Ujednačenost trupova muške i ženske janjadi utvrđena je i temeljem istraživanih pokazatelja kakvoće mesa (pH vrijednost i boja), izuzev vrijednost L* parametra boje utvrđene na M. semitendinosus koja je u muške janjadi bila statistički značajno veća (P<0,05).The aim of this study was to determine slaughter and carcass characteristics as well as some indicators of lamb meat quality (pH value and muscle tissue colour). Also, the aim was to determine the influence of sex on slaughter and carcass characteristics and lamb meat quality indicators. For that purpose, in April 2017, a total of 70 lambs of Travnik pramenka sheep were slaughtered, of which 48 male and 22 female with average age at slaughter of about 100 days. The average slaughter weight of lambs measured immediately before slaughter was 21.85 kg, considering that male lambs had statistically significant (P <0.05) higher slaughter weight than female (22.47 kg : 20.38 kg). The average lamb carcass weight of 11.04 kg was determined, which was statistically significantly higher (P <0.05) in male (11.32 kg) compared to female lamb carcass (10.42). Although the dressing percentage of female lambs (51.04%) was higher than that found in male Travnik lambs (50.33%) the difference was not statistically significant. Based on determined carcass measurements of lamb carcasses, the carcasses of Travnik pramenka lambs belong to the category of light lamb carcasses. The uniformity of male and female lamb carcases was determined based on the investigated meat quality indicators (pH value and colour), except the L* value of colour parameter determined on M. semitendinosus which was statistically significantly higher in male lambs (P <0.05)