EFFICIENCY OF THREE COMMERCIAL DIETS AND AN EXPERIMENTAL ONE UPON THE DEVELOPMENT OF THE SHRIMP PENAEUS PAULENSIS (PÉREZ-FARFANTE, 1967) IN LABORATORY

Abstract

A 29 days experiment was carried out to evaluate the nutritional efficiency of 3 commercial diets (D1=Sibra to P. subtilis; D2=Sibra to P. vannamei and D3=Agroceres) and an experimental one (D4) with the shrimp Penaeus paulensis (3.05 ± 0.04 g). The experimet was developed accomplished in 12 boxes with 200 litres capacity, with 15 shrimps in each box, being each diet tested three times. The ration was offered ad libitum, three times a day (8:00, 14:00 and 20:00 hr) in trays, being each one taken out one hour and thirty minutes after the feeding for the consumption verification. The survival was around 93%, and it did not show significant differences between treatments (P>0.05). The dry matter apparent consumption was equivalent for D1, D2 and D3 diets, but it was observed a significant superior consumption for the D4 diet (P<0.05). This result can be related to the low stability verified for this diet. D1 and D4 diets didn't statistically differ and were superior to D2 and D3 on the aspect of weight gain (P<0.05). With relation to the feed convertion, the D4 diet showed to be significantly inferior to the commercial ones, which didn't differ significantly among each other (p<0.05). The results suggest that the commercial diet D1 and the experimental diet (D4) were the most efficient ones for the nutrition of P. paulensis. On the other hand, the D4 diet had a poor stability in the water, reflecting the worst feed conversion.