Rendimento corporal e composição química da viola (Loricariichthys anus) em duas faixas de peso capturadas na Lagoa Mangueira, RS, Brasil

Abstract

The viola is attracting great interest for fish farming, being one of themost numerous species of pond hose and the great potential for aquaculture. The Pond Hose, part of the Mirim Lagoon Basin,located in the eastern portion of southern Brazil and across the region the fishery is developed by hand, depending on hernumerous families of fishermen residents to its shores. Fishing isregulated since 1994 by Ordinance No. 119-N/93 IBAMA, whichdetermines the minimum size of 40 mm internodes for gill netting.With the justification of the reduction of fish production in the region,local fishermen have been using smaller nets for fishing in LakeViola hose, resulting in a systematic reduction in the average size of catches, leading to a greater effort to obtain a yield increasinglysmaller. Our objectives were to evaluate the performance and bodycomposition of the meat viola in two weight ranges, in order to knowwhich one you get a better yield. The animals used were provided by fishermen Pond Hose and collection occurred in August 2011.We used 20 animals of each track, totaling 40 animals. In the Laboratory of Ichthyology at the Federal University of Pelotas werechosen at random the same number of males and females, divided into two weight ranges and analyzed using biometrics. The chemical composition was made in the laboratories of Animal Nutrition and chromatography in the same institution. Animals thatwere in the range of weight 2 showed better carcass yield. With the chemical analysis came to the conclusion that the fillet is considered to violate thin.