Simulation-based Evaluation of Four Scenarios for Pig Testing at a Central Test Station
Titel:
Simulation-based Evaluation of Four Scenarios for Pig Testing at a Central Test Station
Auteur:
van Dijk, Joost Rydhmer, Lotta Johansson, Kjell Lundeheim, Nils Andersson, Kjell
Verschenen in:
Acta agriculturae Scandinavica. Section A, Animal science
Paginering:
Jaargang 49 (1999) nr. 1 pagina's 42-48
Jaar:
1999-05-10
Inhoud:
Computer simulations were used to compare the following four scenarios: central station testing of two pigs from all first-parity litters, with all remaining animals field tested (CTS); no central station testing, all animals field tested (NOCTS); central station testing of two pigs from all first-parity litters, no field testing (CTSO); and a fourth scenario with conditions as in CTS, except that only 50% of the first litters were station tested (CTS5). The simulated population consisted of six herds of 100 sows each. Daily gain at test station, lean meat % at test station, osteochondrosis at test station, feed conversion at test station, daily gain in field test and backfat thickness in field test were included in the multi-trait animal model breeding values. The average genetic gain from years 0-10 was 203, 171, 130 and 194 SEK for the alternatives CTS, NOCTS, CTSO and CTS5, respectively. The simulation showed that the test station still has an important function in swine breeding programs.