${session.getAttribute("locale")} 5 Genetic improvement for red tilapia, Oreochromis spp., in Asia Wed 18 Mar 2020 09:16:31 AEST ]]> Genetic improvement of Nile tilapia (Oreochromis niloticus) with special reference to the work conducted by the WorldFish Center with the GIFT strain Wed 18 Mar 2020 09:16:14 AEST ]]> Genetic improvement of Nile tilapia (Oreochromis niloticus) - present and future. Wed 18 Mar 2020 09:13:11 AEST ]]> Genetics of Flesh Quality in Fish Wed 18 Mar 2020 09:11:30 AEST ]]> Analysis of a complete diallel cross involving three strains of red tilapia reared in earthen pond 0.05). Our results suggested that there were genetic differences in growth performance and survival among red tilapia strains from Malaysia, Taiwan, and Thailand. They were thus included in a complete diallel cross to further examine the additive and non-additive genetic performance of the strains before forming the base population for future genetic selection. In 2008 a complete diallel cross using the best parents of the three strains from Malaysia (A), Taiwan (B) and Thailand © was carried out over two batches of spawning. A total of 66 and 55 full-sib families were produced in the first and second batch, respectively. By far, progeny of the first batch was harvested. Grow-out of fish from the second batch is underway. The main aim of this study was to evaluate growth performance of strain and cross combinations. Statistical analysis was carried out on 4,134 individually tagged fish from the first harvest. The model included the fixed effects of genotype and sex, and the random effect of full sib families. Age and initial weight were also fitted as covariables in the model. The results (Fig.1) showed that the effect of genotypes were highly significant. Overall, growth performance of crossbreds was only slightly higher than that of pure strains. The level of heterosis measured as a deviation of progeny from the average parents was generally small. In the present study, the effects of additive and reciprocal (maternal) genetics were also estimated and discussed.]]> Wed 18 Mar 2020 09:11:28 AEST ]]> Modeling fillet yield based on body measurements in genetically improved farmed Tilapia (GIFT) 'Oreochromis Niloticus' Wed 18 Mar 2020 09:11:11 AEST ]]> Effects of heat treatment on male to female ratio in the GIFT strain Wed 18 Mar 2020 09:10:44 AEST ]]> Quantitative genetic basis of fatty acid composition in the GIFT strain of Nile tilapia (Oreochromis niloticus) selected for high growth Wed 18 Mar 2020 09:10:41 AEST ]]> Correlated response in fillet weight and yield to selection for increased harvest weight in genetically improved farmed tilapia (GIFT strain), Oreochromis niloticus Wed 18 Mar 2020 09:10:38 AEST ]]> Growth and survival rate of three genetic groups fed 28% and 34% protein diets 0.05). Responses in growth to dietary protein levels also differed between genetic groups. No differences (P > 0.05) in body weight were found in the GIFT selection and Control fish fed 28% or 34% protein diets. However, body weight of Red tilapia was greater in the high- than in the low-protein diet. In contrast to body weight, survival rate from stocking to harvest was affected by protein level. The high-protein diet significantly improved survival rate, averaging 24% across the three strains. The overall results indicate significant effects of genetic group and dietary protein level on both body weight and survival rate; however, the interaction between strain and dietary protein levels was small and possibly unimportant for these traits. It is concluded that the 28% protein diet used in the selection programme for the GIFT strain results in the selection of genotypes that can perform well under commercial feeds.]]> Wed 18 Mar 2020 09:09:59 AEST ]]>