Analysis of the hydrolyzed protein extracted from the curvina tissue and tilapia in the shrimp feed

Abstract

The Honduran shrimp industry registers a production area of 22,748 hectares that demand an annual consumption of 80,000 metric tons of feed; this is a production input with a high cost to the producer. During the culture, fish such as corvine and tilapia grow simultaneously with shrimp and because of their size are not used. It is considered that one of the most economical methods to take advantage of these resources is fish hydrolysate. The objective of the study was to evaluate the effect of curvina hydrolysate and tilapia on the balanced feed of the productive performance of shrimp. Nine 37 L aquariums were installed planting 12 shrimp (with initial weight of 3.6 g), hydrolyzed proteins were extracted from curvine and tilapia tissues, and three treatments were used. The treatments consisted in a.) feeding the shrimp with the balanced food plus the curly hydrolyzed extract, b.) feeding balanced food plus tilapia hydrolysate and c.) feeding only balanced food. Each treatment was managed in triplicate proportions. The greater attractiveness was observed in the shrimp fed with the balance plus the tilapia hydrolysate (P <0.0001). The shrimp are more voracious in the morning than in the afternoon. The growths, feed conversion factor and specific rate of growth (P <0.001) were more favorable in the animals fed tilapia hydrolysate. The best survivals were observed in the shrimp that consumed the fish hydrolysates.