Effect of various rate of protein content in ready-mixed diets on growth and survival of young Featherback (Notopterus chitala (Hamilton-Buchanan))
1995
Piman Lohhem
Study on the effect of protein levels in mixed diets on growth and survival rate of young Featherback, Notopterus chitala (Hamilton-Buchanan) was conducted at Lopburi Freshwater Fisheries Station during 18 August-18 October 1994. Six treatments and three replications each were designed. Five levels of protein, e.g., 35.48, 40.87, 45.95, 51.44, and 56.15 percent were from fish meal source. Ground raw fish was used in the last treatment. Young featherback were totally 540 tails of 6.814 cm and 1.841 g on the average of young featherback used. Thirty tails were used to stock in each replication. Feeding was done in the morning and in the afternoon. Daily feeding rate was 7 percent of their body weight and was readjusted at 2-week intervals after their growth measurements. During nursing period, water was changed daily. After 8 weeks of experiment, both growth and chemical compositions of fish flesh were highly significant differences among the six treatments but survival was not significantly differences in the experiment. The results indicated that fish fed 51.44 percents of protein mixed-diet show the highest growth rate, FCR, survival rate and protein content of fish flesh.
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