Weight and body yield of selectively bred tambaqui (Colossoma macropomum) farmed in different environments

Abstract

The objective of this study was to evaluate the weight and body yield of two families of selectively bred tambaqui farmed in different environments. Two families (FA and FB) were reared in the municipalities (environments) of Santo Antônio de Leverger (MT) and Campo Grande (MS) for 431 days. Pre-bleeding weight, body yield, and the interaction effect between families and environments on these traits were investigated.No interaction effect between the evaluated families and environments was detected on the evaluated traits. Pre-bleeding weight did not differ signifi cantly between the families in MT (FA: 2,421.7g; FB: 2,478.0g) or in MS (FA: 1,138.7g; FB: 1,389.8g), but the fi sh from MT had a higher (P<0.05) pre-bleeding weight than those farmed in MS. The visceral fat yield (considering the two environments) was higher (P<0.05) in FB family (3.8%) than in FA family (3.3%).Fish from MS showed higher (P<0.05) offal yield (10.6%) and visceral fat yield (3.9%) but a lower clean-trunk yield (70.6%) than the tambaqui farmed in MT (offal: 7.7%; visceral fat: 3.1%; and clean trunk: 72.6%). In conclusion, the MT environment provides higher pre-bleeding weight and clean-trunk yield and lower offal and visceralfat yields than the MS environment.

Evaluating fermented fish viscera silage in diets for Colossoma macropomum and its effects on physical quality of pellets, production performance, health parameters, and economic analysis

“…Is a neotropical characin species that has an omnivorous feeding behavior, fast growth, readily acceptance of extruded feed and high demand by consumers, with a ~ 30% llet yield (Hilsdorf et al 2021;Liebl et al 2021). The viscera correspond to 10% of the live weight of weighing between 1.0 and 3.5 kg (Marcos et al 2020).…”