Production trait comparison of five pig sire lines with different halothane genotypes

Production traits of terminal products from five sire lines were compared. The sire lines were Hampshire × Duroc (HD, 28 sires), Duroc (DD, 28 sires), Large White × Duroc (YD, 31 sires) from the National Danish breeding programme, Large White× Duroc (KRUSTA, 20 sires) from Stamboek International and PIC 416 (19 sires) from PIC. Semen from these five lines was used in a balanced scheme in four production herds with Landrace × Large White sows. About 100 litters from each line were produced, and from each litter one gilt and one castrate were selected at weaning and shipped to an early weaning unit, then to test stations, and tested from 30 kg to 115 kg live weight. Pair‐wise comparisons of lines were made, and P‐values were adjusted for multiple comparisons. Daily gain (g day−1), feed conversion (kg feed/kg gain) and lean percentage of offspring from HD, DD, YD, KRUSTA, and PIC 416 adjusted for halothane genotypes were (933, 952, 942, 944, and 924), (2.84, 2.80, 2.84, 2.99, and 2.92), (58.6, 58.3, 58.5, 57...