TAILIEUCHUNG - Báo cáo sinh học: "Breeding salmonids for feed efficiency in current fishmeal and future plant-based diet environments"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học thế giới đề tài: Breeding salmonids for feed efficiency in current fishmeal and future plant-based diet environments | Genet. Sel. Evol. 39 2007 431-446 INRA EDP Sciences 2007 DOI gse 2007013 Available online at Original article Breeding salmonids for feed efficiency in current fishmeal and future plant-based diet environments Cheryl D. QuiNTONa Antti KAUSEa Juha KOSKELAb Ossi RlTOLAc a MTT Agrifood Research Finland Biotechnology and Food Research Biometrical Genetics 31600 Jokioinen Finland b Finnish Game and Fisheries Research Institute Jyvaskyla Survontie 9 40500 Jyvaskyla Finland c Finnish Game and Fisheries Research Institute Tervo Fisheries Research and Aquaculture 72210 Tervo Finland Received 9 November 2006 accepted 20 January 2007 Abstract - The aquaculture industry is increasingly replacing fishmeal in feeds for carnivorous fish with soybean meal SBM . This diet change presents a potential for genotype-environment G X E interactions. We tested whether current salmonid breeding programmes that evaluate and select within fishmeal diets also improve growth and efficiency on potential future SBM diets. A total of 1680 European whitefish from 70 families were reared with either fishmeal- or SBM-based diets in a split-family design. Individual daily gain DG daily feed intake DFI and feed efficiency FE were recorded. Traits displayed only weak G X E interactions as variances and heritabilities did not differ substantially between the diets and cross-diet genetic correlations were near unity. In both diets DFI exhibited moderate heritability and had very high genetic correlation with DG whereas FE had low heritability. Predicted genetic responses demonstrated that selection to increase DG and FE on the fishmeal diet lead to favourable responses on the SBM diet. Selection for FE based on an index including DG and DFI achieved at least double FE gain versus selection on DG alone. Therefore current breeding programmes are improving the biological ability of salmonids to use novel plant-based diets and aiding the aquaculture industry to reduce fishmeal .

• Báo cáo khoa học
• Báo cáo sinh học hay
• cách trình bày báo cáo
• báo cáo sinh học
• công trình nghiên cứu sinh học
• tài liệu về sinh học