Abstract

ROJAS-RUNJAIC, Bárbara et al. Yield carcass and filleting in tilapia (Oreochromis niloticus) Chitralada strain cultivated in Trujillo state, Venezuela. Zootecnia Trop. [online]. 2011, vol.29, n.1, pp.113-126. ISSN 0798-7269.

An experiment was carried out in order to evaluate the carcass yields and filleting of the tilapia (Oreochromis niloticus strain: Chitralada) with weights among 250-400g (range: 250-300, 300-350 and 350-400g), cultivated under intensive conditions in Trujillo state, Venezuela; using a completely randomized design with 60 measured animals. The morphometric measured parameters were: total length (LT), standard length (LS), head length (LC), head height (AC), body thickness (EH), body longitude (LH) and body height (AH); the variables related with the weight (in g) were: weigh fresh (PF), carcass weight (Pc), body weight (Pt), weight of the clean trunk (TSe), fillet weigh (PFi) and component of residuals; the parameters relating with yields were evaluated to: carcass yield (%RC), fillet yield according to fresh weight (% RPF) and yield of the fillet according to the carcass (%RFPc). The morphometric parameters showed significant differences (P<0,05), exception of EH and AH. No differences (P>0,05) in the variables related with weight of gills and fins were observed. No differences regarding the yield according to the variables of corporal yield were observed (P>0,05). The hight morphometric and weight values were observed in animals with 350-400g of live weight. However, the hight size presented marginal influence in yield results.

Keywords : carcass; Chitralada; filleting; fish culture.