Effects of heterozygosity on performance of purebred and crossbred pigs
| Autor: | Theodorus Meuwissen, Marcos S. Lopes, Eli Gjerlaug-Enger, Maja Winther Iversen, Eli Grindflek, Øyvind Nordbø |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Male
Heterozygote Animal breeding lcsh:QH426-470 Heterosis Swine [SDV]Life Sciences [q-bio] Quantitative trait locus Biology Crossbreed Loss of heterozygosity Animal science Quantitative Trait Heritable Genetics Hybrid Vigor Animals Inbreeding 10. No inequality Ecology Evolution Behavior and Systematics lcsh:SF1-1100 2. Zero hunger 0402 animal and dairy science 04 agricultural and veterinary sciences General Medicine 040201 dairy & animal science lcsh:Genetics Genetic gain Hybridization Genetic Animal Science and Zoology Female lcsh:Animal culture Purebred Research Article |
| Zdroj: | Genetics Selection Evolution Genetics Selection Evolution, BioMed Central, 2019, 51 (1), pp.8. ⟨10.1186/s12711-019-0450-1⟩ Genetics, Selection, Evolution : GSE Genetics Selection Evolution, Vol 51, Iss 1, Pp 1-13 (2019) |
| ISSN: | 0999-193X 1297-9686 |
| DOI: | 10.1186/s12711-019-0450-1⟩ |
| Popis: | Background In pigs, crossbreeding aims at exploiting heterosis, but heterosis is difficult to quantify. Heterozygosity at genetic markers is easier to measure and could potentially be used as an indicator of heterosis. The objective of this study was to investigate the effect of heterozygosity on various maternal and production traits in purebred and crossbred pigs. The proportion of heterozygosity at genetic markers across the genome for each individual was included in the prediction model as a fixed regression across or within breeds. Results Estimates of regression coefficients of heterozygosity showed large effects for some traits. For maternal traits, regression coefficient estimates were always in a favourable direction, while for production, meat and slaughter quality traits, they were both favourable and unfavourable. Traits with the largest estimated effects of heterozygosity were total number born, litter weight at 3 weeks, weight at 150 days, and age at 40 kg. Estimates of regression coefficients on heterozygosity differed between breeds. Traits with the largest effect of heterozygosity also showed a significant (P |
| Databáze: | OpenAIRE |
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