Evaluation of the effect and profitability of gene-assisted selection in pig breeding system / 浙江大学学报(英文版)(B辑:生物医学和生物技术)
Journal of Zhejiang University. Science. B
;
(12): 822-830, 2007.
Artículo
en Inglés
| WPRIM
| ID: wpr-277323
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the effect and profitability of using the quantitative trait loci (QTL)-linked direct marker (DR marker) in gene-assisted selection (GAS).</p><p><b>METHODS</b>Three populations (100, 200, or 300 sows plus 10 boars within each group) with segregating QTL were simulated stochastically. Five economic traits were investigated, including number of born alive (NBA), average daily gain to 100 kg body weight (ADG), feed conversion ratio (FCR), back fat at 100 kg body weight (BF) and intramuscular fat (IMF). Selection was based on the estimated breeding value (EBV) of each trait. The starting frequencies of the QTL's favorable allele were 0.1, 0.3 and 0.5, respectively. The economic return was calculated by gene flow method.</p><p><b>RESULTS</b>The selection efficiency was higher than 100% when DR markers were used in GAS for 5 traits. The selection efficiency for NBA was the highest, and the lowest was for ADG whose QTL had the lowest variance. The mixed model applied DR markers and obtained higher extra genetic gain and extra economic returns. We also found that the lower the frequency of the favorable allele of the QTL, the higher the extra return obtained.</p><p><b>CONCLUSION</b>GAS is an effective selection scheme to increase the genetic gain and the economic returns in pig breeding.</p>
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Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Selección Genética
/
Porcinos
/
Cruzamiento
/
Marcadores Genéticos
/
Sitios de Carácter Cuantitativo
/
Economía
/
Métodos
/
Modelos Genéticos
Tipo de estudio:
Evaluación Económica en Salud
/
Estudio pronóstico
Límite:
Animales
Idioma:
Inglés
Revista:
Journal of Zhejiang University. Science. B
Año:
2007
Tipo del documento:
Artículo
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