Abstract
Split paternity rates in multiple born lambs of syndicate-mated Merino flocks have previously not been reported, primarily due to the cost of genotyping. Pedigree data from litters born to genetically diverse syndicate mated ewes in three Merino Lifetime Productivity flocks across Australia were analysed to examine rates of split paternity, or heteropaternal superfecundation. Over three years at three sites, 1082 twin or triplet litters born, of which 577 were heteropaternal (53.3%). There was no effect of age of dam, year of birth, sire or maternal grandsire on split paternity rates. These high rates of split paternity confirm the need to genotype all progeny from multiple births to ensure accurate genetic evaluation.
Original language | English |
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Title of host publication | Proceedings of the Association for the Advancement of Animal Breeding and Genetics 24 |
Place of Publication | Australia |
Publisher | The Association for the Advancement of Animal Breeding and Genetics |
Pages | 54-57 |
Publication status | Published - 2021 |
Event | 24th Conference of the Association for the Advancement of Animal Breeding and Genetics - Adelaide, Australia Duration: 2 Nov 2021 → 4 Nov 2021 |
Conference
Conference | 24th Conference of the Association for the Advancement of Animal Breeding and Genetics |
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Abbreviated title | AAABG 2021 |
Country/Territory | Australia |
City | Adelaide |
Period | 2/11/21 → 4/11/21 |