ECONOMIC FEASIBILITY EVALUATION OF PACU Piaractus mesopotamicus supplemented with different levels of Condensed Fermented Corn Extractive
Condensed fermented corn extractive (CFCE) is a by-product which has non-fiber carbohydrates and high level protein (approximately 43g 100g-1) and can be used as an alternative ingredient in feeds for fish. Pacu (Piaractus mesopotamicus) is highly prized and cultivated specie in all Brazilians region. The objective of this research was to evaluate economically the addition of condensed fermented corn extractive in diets for pacu (Piaractus mesopotamicus) considering the variation of the CFCE; the soy and the fish meal prices and the feed conversion ratio obtained. No difference were found among treatment (p>0,05). Variation of CFCE, soy and fish meal prices didn`t affect these results.
A total of 140 pacu juveniles (3.42 g 0.12 g) were assigned to a completely randomized design (five treatments and four replications), distributed in twenty aquaria with capacity of 40 L, at density of seven fishes per aquarium, inserted in a water recirculation system, aeration and automatic temperature control. The fishes were fed with isoproteic and isocaloric diets (Digestible Protein=27 g. kg-1 and Digestible Energy = 3200 kcal kg-1), containing different levels of CFCE inclusion (0, 2, 4, 6 and 8 g.100g-1), twice a day (8:00 and 17:00), for 90 days. For economic feasibility evaluation, DCW (diet cost for 1Kg production of animal weight) were calculated according to feeding conversion (FC) values and variation of CFCE, soy (SM) and fish meal (FM) prices.
The temperature, dissolved oxygen, pH, ammonia, nitrite, during the experimental period showed average values of 26.91 2.27 4.65 mg L-1 0.44 mg L-1 and 6.33 0.69, 0-0.25ppm, 0-0.25ppm, respectively. During the experimental period, there was no occurrence of mortality. The results are described on Table 1.
No significant differences were found in DCW values among CFCE inclusion levels (p>0.05). Variation of ingredients (CFCE, SM and FM) prices didnhad effect on these results. Itmight be related to FC values obtained and the low level of CFCE inclusions tested. Use of higher levels of CFCE addition to diets for pacu could show relevant results.
Support: Corn Products Brasil, Evialis Group, Cnpq.
A total of 140 pacu juveniles (3.42 g 0.12 g) were assigned to a completely randomized design (five treatments and four replications), distributed in twenty aquaria with capacity of 40 L, at density of seven fishes per aquarium, inserted in a water recirculation system, aeration and automatic temperature control. The fishes were fed with isoproteic and isocaloric diets (Digestible Protein=27 g. kg-1 and Digestible Energy = 3200 kcal kg-1), containing different levels of CFCE inclusion (0, 2, 4, 6 and 8 g.100g-1), twice a day (8:00 and 17:00), for 90 days. For economic feasibility evaluation, DCW (diet cost for 1Kg production of animal weight) were calculated according to feeding conversion (FC) values and variation of CFCE, soy (SM) and fish meal (FM) prices.
The temperature, dissolved oxygen, pH, ammonia, nitrite, during the experimental period showed average values of 26.91 2.27 4.65 mg L-1 0.44 mg L-1 and 6.33 0.69, 0-0.25ppm, 0-0.25ppm, respectively. During the experimental period, there was no occurrence of mortality. The results are described on Table 1.
No significant differences were found in DCW values among CFCE inclusion levels (p>0.05). Variation of ingredients (CFCE, SM and FM) prices didnhad effect on these results. Itmight be related to FC values obtained and the low level of CFCE inclusions tested. Use of higher levels of CFCE addition to diets for pacu could show relevant results.
Support: Corn Products Brasil, Evialis Group, Cnpq.