| Autor: |
Su, Guosheng, Liu, Tianfei, Christensen, Ole Fredslund, Lund, Mogens Sandø, Nielsen, Bjarne |
| Jazyk: |
dánština |
| Rok vydání: |
2022 |
| Zdroj: |
Su, G, Liu, T, Christensen, O F, Lund, M S & Nielsen, B 2022, Feasibility of reducing mortality of pigs from birth to slaughter by genetic selection . i WCGALP 2022 Programme book . Wageningen Academic Publishers, World Congress on Genetics Applied to Livestock Production, Rotterdam, Holland, 03/07/2022 . < https://www.wageningenacademic.com/pb-assets/wagen/WCGALP2022/68_009.pdf > |
| Popis: |
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 maternalheritabilities 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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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