Additive and heterotic breed effects in the genetic evaluation of pig sire breeds
|Kateg. publikace||Vědecké publikace impaktované|
Field performance data from 54848 purebred and 16175 crossbred animals (Czech data set, CZ) and 16610 purebred and 9228 crossbred animals (Slovak data set, SK) were analyzed. The following breeds were included: Duroc, Hampshire, Piétrain, sire line of Large White (CZ) or Yorkshire (SK), Czech Meat pig (CZ) or Slovak Meat pig (SK), Belgian Landrace (SK). Two-trait animal models including heterotic effects were calculated for average daily gain from birth to the end of the field test (ADG) and lean meat content (LM, only in CZ) or backfat thickness (BF, only in SK). Piétrain was the breed with the highest LM and the lowest BF. The sire line of Large White (CZ) or the Yorkshire breed (SK) clearly exceeded all the remaining sire breeds in ADG. There was aclear tendency to negative heterosis in LM in all crossbred combinations (CZ). The estimates of the heterotic effects for ADG were positive throughout.
|Oddělení||Genetika a šlechtění hospodářských zvířat|
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