Investigation of the effect of mass prior to slaughtering on slaughter values of male fattening young cattle of domestic Simmental breed

For the purpose of investigation of factors important for slaughter yield results, a trial with three groups of young cattle of Domestic Simmental breed of different body masses was carried out. Young cattle in the first group (G1) (n=6) had average body mass of 509,00 kg (475-525), in the second group (G2) of young cattle (n=7) average body mass of 554,29 kg (530 - 575) was recorded and in the third group of young cattle (G3) (n=8) 591,13kg (580-615). Subsequent to slaughtering warm carcass sides were measured individually, with and without kidney fat, mass of internal organs was measured (kidneys, liver, lungs, heart, spleen) and mass of other secondary slaughter products (head, tongue, tail, muscle part of diaphragm). After cooling carcass sides were cut into main parts. Based on obtained results of research it was established that male cattle of group (G2) of Domestic Simmental breed of average body mass of 554,29 kg have realized higher slaughter yield compared to groups G1 and G3, whereas the share of kidney fat was the same in all three groups of young cattle. Share of mass of internal organs was the lowest in young cattle of group G2 (2,47%) whereas in other two groups it was the same. Share of mass of other secondary slaughter products (head, tongue, tail, muscle part of diaphragm) in all three groups of young cattle was the same. Share of mass of round (I category part of the carcass) was the highest in young cattle of group G3 (29,86), and statistically significantly (P<0.05) lower in group G1 (28,39). Share of carcass parts of II category (loin, back, shoulder) was the lowest in young cattle of group G3 (23,655), and of carcass parts of category III (second thigh, second fore thigh, neck, breasts, ribs, belly) in young cattle of group G2 (44,45%). .