Effects of three dietary protein levels on the growth of pacu, Colossoma mitrei Berg, in cages |
| |
| Authors: | N MEROLA |
| |
| Institution: | Food and Agriculture Organization of the United Nations (FAO), Project GCP/RLA/075/ITA Support to the Regional Aquaculture Activities for Latin America and the Caribbean, Brasilia, Brazil |
| |
| Abstract: | Abstract. Artificially reproduced pacu, Colossoma mitrei Berg, fingerlings (initial weight 41 g) were stocked (100/m3) in plastic cages (1·0m3) within a freshwater reservoir. Three diets containing 30, 35 and 40% protein were tested in quadruplicate over a 76-day experimental feeding period. Fish were fed 7 days a week, twice daily at a feeding regime of 4% body weight/day from stock to 100g and thereafter at 3% until harvest. Mean water temperature over the trial was 26·7°C. Significant differences were observed in total and daily gain and in protein efficiency ratio, while no differences were obtained in the feed conversion ratio between treatments. Based on this study a 35% protein ration is recommended for pacu within floating cages. |
| |
| Keywords: | |
|
|
