Direct and correlated responses to long-term residual feed consumption–based selection in Brown Tsaiya ducks
Abstract
= 0.566) between RFC and egg mass found in the selected line. Furthermore, the S line exhibited reduced additive genetic variance and increased inbreeding over generations, suggesting the accumulation of selection pressure and narrowing of genetic diversity. Despite these challenges, the S line continued to improve in FE without reaching a genetic plateau, highlighting the potential for further genetic gain. These results establish RFC as a valuable selection criterion for enhancing FE in laying ducks but underscore the need for balanced breeding approaches. Incorporating multitrait or restricted selection indices may help sustain both FE gains and egg production performance, ensuring the long-term genetic and economic sustainability of Taiwan's Brown Tsaiya duck population.
Fields of Study & Subjects
Animal Nutrition and Physiology
Livestock and Poultry Management
Genetic and phenotypic traits in livestock
Publication details
- Journal / source
- Poultry Science
- Publisher
- Elsevier BV
- Volume
- 105
- Issue
- 4
- Pages
- 106433–106433
- Publication date
- 12 January 2026
- Language
- EN