Abstract
Industry data for traits included in the new multi-trait genetic evaluation for reproductive traits provided by Sheep Genetics were used to investigate variation due to sub-populations (genetic groups) and due to outcross ewe genotypes in maternal sheep breeds. Substantial variation due to genetic groups (gg² : typically 11-30% of the phenotypic variance) for traits reflecting development (eg weight, condition score, muscle depth) were not accompanied by comparable variation for reproductive traits (gg² : 0-8%). Variation due to outcross ewe genotypes ranged from 0 to 8% across traits, being highest for adult ewe weight (8%) and yearling conception (6%) traits, which are expected to be affected by heterosis. Accommodating these sources of variation appropriately may be important for the genetic evaluation of data affected by admixture of populations.
| Original language | English |
|---|---|
| Pages (from-to) | 99-102 |
| Journal | Proceedings of the Association for the Advancement of Animal Breeding and Genetics |
| Volume | 23 |
| Publication status | Published - 2019 |
| Event | AAABG 2019: 23rd Conference of the Association for the Advancement of Animal Breeding and Genetics - University of New England, Armidale, Australia Duration: 27 Oct 2019 → 1 Nov 2019 |
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