Comparison of production traits of Large White and White Meaty pig breeds for 1996 to 2001 in Slovakia

摘要

Fattening performance and carcass value traits of Large White (LW) and White Meaty (WM) breeds were evaluated from data obtained at progeny testing stations (PTS) in Slovakia in the years 1996-2001. We recorded the following results: average daily gain (ADG) during fattening from 30 to 100 kg live weight 811.5 +/- 1.31 g in. LW breed and 803.9 +/- 2.38 g in WM breed, feed consumption per I kg gain during fattening (FC) 2;95 +/- 0.005 kg and/or 3.10 +/- 0.010 kg, backfat thickness (BF) 19.2 +/- 0.0006 mm in LW breed and 19.8 +/- 0.001 mm in WM breed, proportion of lean cuts (PLC) 52.13 +/- 0.04% in LW breed and 51.61 +/- 0.07% in VIM breed, proportion of meat from thigh (PMT) 21.12 +/- 0.02% in I-W breed and 20.86 +/- 0.04% in WM breed and area of musculus longissimus thoracis (AMLT) 45.36 +/- 0.07 cm(2) in LW breed and 44.73 +/- 0.12 cm(2) in breed WM. The carcass traits, except backfat thickness, were improved under the influence of selection in both breeds compared with previous years. The analyses of variance of analyzed traits showed statistically significant differences between the years in ADG, PLC, PMT and AMLT. There were also statistically highly significant differences in all traits, except for ADG, between the LW and VIM breeds. The difference was only statistically significant in ADG. The year x breed interactions were also highly significant in all traits.