Dehnavi, E

Swan, A A

Ramsay, A M M

Burbidge, G

Brown, D J

2023-07-26

<p>This study explored the phenotypic and genetic variation in breech flystrike and its relationship with production traits in the Connemara Merino ram breeding flock. Yearling breech strike (struck/non-struck) had a low heritability of 0.09±0.04 when using a binomial model. Heritability estimates for production traits ranged from 0.12±0.04 (for faecal worm egg count) to 0.70±0.07 (for staple length). Genetic correlations between breech strike and production traits varied from negative (-0.25±0.24 for fibre diameter) to high positive (0.70±0.21 for dag score), illustrating both favourable and unfavourable relationships that will have implications for future selection programs incorporating breech strike resistance with production traits. </p>

Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.25, p. 354-357

1328-3227

https://hdl.handle.net/1959.11/56133

en

Association for the Advancement of Animal Breeding and Genetics (AAABG)

Preliminary genetic parameters for flystrike and its association with production traits in Australian Merino sheep

Conference Publication

Publication