| Author(s) |
Bunter, K L
Swan, A A
Brown, D J
|
| Publication Date |
2019
|
| 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.
|
| Citation |
Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.23, p. 99-102
|
| ISSN |
1328-3227
|
| Link | |
| Publisher |
Association for the Advancement of Animal Breeding and Genetics (AAABG)
|
| Title |
Contributions from Genetic Groups and Outcrossing to Components of Reproduction in Maternal Sheep Breeds
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| Type of document |
Conference Publication
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| Entity Type |
Publication
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