Comparative study of growth,body composition,and muscle quality between 4th generation selected and non-selected Parabramis pekinensis
A 9-and-a-half month culture trial was conducted to investigate the differences between the 4th-genera-tion selectively bred(F4)line and the non-selectively bred(CON)line of Parabramis pekinensis.Comparative analyses were performed on growth traits,general body composition,and muscle nutritional quality.The results demonstrated that the F4 line exhibited significantly higher final body weight,final body length,weight gain rate,and specific growth rate than the CON line(P<0.05),indicating superior growth performance and morphological parameters.The final average body weight of the F4 group was 25%higher than that of the CON group,and the condition factor was also significantly higher in the F4 group(P<0.05).Regarding amino acids composition,the levels of Gly,Pro,Ala,and Met,were significantly higher in the F4 group than in the CON group(P<0.05).Additionally,the umami amino acid ratio(F/T)in the F4 group was slightly higher than in the CON group.For fatty acids,the F4 group exhibited significantly higher levels of C16∶0,C18∶1,C18∶2,∑SFA,and ∑PUFA compared to the CON group(P<0.05).These findings suggest that growth and morphological traits of P.pekin-ensis are greatly influenced by selective breeding,and the F4 selectively bred line exhibits superiority in growth performance,biochemical composition,and muscle nutritional quality compared to the non-selectively bred line.However,the process of the influence of amino acid and fatty acid content on fish body was complicated,and fur-ther research and demonstration were needed.
国家科技期刊平台
NSTL
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