Feasibility of reducing mortality of pigs from birth to slaughter by genetic selection

Guosheng Su*, Tianfei Liu, Ole Fredslund Christensen, Mogens Sandø Lund, Bjarne Nielsen

*Corresponding author af dette arbejde

Publikation: Bidrag til bog/antologi/rapport/proceedingKonferencebidrag i proceedingsForskningpeer review

Abstract

Pig mortality is a big welfare and economic challenge. This study investigated the feasibility of reducing mortality of pigs from day 5 to slaughter and from birth to slaughter by breeding. Data of 163,782 female pigs were from DanBred Yorkshire breeding herds. Variances and breeding values were estimated using a linear, a logit and a probit model based on mortality record (0, 1) at individual level. Estimates of direct heritabilities ranged from 0.013 to 0.017 and maternal
heritabilities from 0.005 to 0.017. Estimated breeding values (EBVs) from the three models were highly consistent. Although low heritabilities, validation accuracies of EBVs ranged from 0.415 to 0.420 for direct EBVs, from 0.192 to 0.392 for maternal EBVs, and from 0.357 to 396 for total EBVs. The results indicate that reducing pig mortality by breeding is feasible, and linear model is efficient for genetic evaluation of pig mortality.
OriginalsprogDansk
TitelWCGALP 2022 Programme book
Antal sider4
ForlagWageningen Academic Publishers
Publikationsdatojul. 2022
StatusUdgivet - jul. 2022
BegivenhedWorld Congress on Genetics Applied to Livestock Production - Rotterdam, Holland
Varighed: 3 jul. 20228 jul. 2022
Konferencens nummer: 12
https://wcgalp.com/

Konference

KonferenceWorld Congress on Genetics Applied to Livestock Production
Nummer12
Land/OmrådeHolland
ByRotterdam
Periode03/07/202208/07/2022
Internetadresse

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