Influência das densidades de estocagem e sistemas de aeração sobre o peso e características de carcaça da tilápia do Nilo ( Oreochromis niloticus Linnaeus, 1757)

摘要: A 252-day experiment was carried out in nine fish ponds with male sex-reversed Nile tilapia 16.3g average weight and fed on commercial ration (29.5% crude protein). The efficiency of aeration systems (A 1 =non-aeration control; 2 =radial compressor 3 =sprinkler) compared three stocking densities (D =3 fish/m ; D =6 =9 ), through the evaluation their final (FW), carcass (CW), fillet (FIW), skin (SWO), visceral fat (VFW), yield (CY) (FIY). Plotting completely randomized a 3x3 factorial scheme, 30 replications, each considered as an experimental unit. heaviest FW (530.27g) CW (431.22g) were obtained . radial system significantly more efficient than other for CW; FIW it only slightly (162.67g). VFW (37.36g) SW (38.13g) observed , respectively. There no significant difference CY between densities, provided highest results. FIY varied from 31.73% ) to 37.14% treatments.