Estimation of genetic and environmental trends for production traits in Czech Landrace and Large White pigs
1998
Wolf, J. | Wolfova, M. (Vyzkumny Ustav Zivocisne Vyroby, Prague-Uhrineves (Czech Republic)) | Groeneveld, E. | Jelinkova, V.
Herdbook data of pigs born from 1988 to 1997 were analyzed in Landrace (L) and Large White (LW) breeds. Lifetime average daily gain (ADGF) and lean meat content measured by PIGLOG (LMF) from field test, average daily gain from 30 kg to 100 kg live weight (ADGS) and valuable cuts in the side of pork at slaughter weight of approximately 100 kg (VCS) from a station test were analyzed. Breeding values were predicted by a four-trait animal model with different models for different traits. For the time period 1992 - 1996 the genetic gain per year was in L: ADGF 2.95 g/day, ADGS 9.29 g/day, LMF 0.29 %, VCS 0.15 kg; in LW: ADGF 1.42 g/day, ADGS 5.54 g/day, LMF 0.39 %, VCS 0.14 kg. The environmental trends were in the same order of magnitude as the genetic trends.
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