Open AccessIn Vitro and In Vivo Feedstuff Digestibility for Snook, Centropomus undecimalis , Juveniles
Author(s) -
Lemus Iratzio,
Maldonado Carlos,
Cuzon Gerard,
Sanchez Adolfo,
Gaxiola Gabriela,
Alvarez Alfonso,
Guerrero Martha
Publication year - 2018
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/jwas.12429
Subject(s) - biology , phytase , corn gluten meal , fish meal , meal , soybean meal , zoology , food science , canola , digestion (alchemy) , gluten , biochemistry , fishery , fish <actinopterygii> , chemistry , ecology , enzyme , chromatography , raw material
The degree of hydrolysis ( DH ) of the ingredients was evaluated for Centropomus undecimalis juveniles. The in vitro experiment included wheat gluten (WG), corn gluten (CG), soybean meal (SBM) and pretreated phytase (SBM + phytase), soy protein concentrate (SPC), canola meal (CAN) and pretreated phytase (CAN + phytase), poultry byproduct meal (PBPM), chicken meal (CHKM), dried whey (DW), Pota meal (PM: mix of giant squid, fish soluble protein concentrate, crustacean meal, and fish oil), and Protiblend (PTB: aquatic and render mix). The highest acidic DH occurred with PTB (0.38 ± 0.06), CHKM (0.33 ± 0.3), and PBPM (0.25 ± 0.03). In the alkaline condition, PTB (1.6 ± 0.17 and 0.98 ± 0.05 for pyloric caeca and intestine, respectively) and CG (1.04 ± 0.4 and 0.75 ± 0.2 for caeca and intestine, respectively) provided the highest DH values. In vitro digestibility demonstrated that PTB was the highest (85.3%) followed by PBPM (51.4%), CAN + phytase (47.6%), CG (45.1%), and CHKM (46.5%). The in vivo experiment concerned the WG , CHKM, PBPM, PM, and PTB diets plus a reference diet with fishmeal (Ref diet). The total % DH was different ( P < 0.05) with the lowest values for the WG diet (0.34 ± 0.09%) and Ref diet (0.34 ± 0.15). Free amino acid released during digestion was displayed for these diets and a bifactorial analysis produced no difference ( P > 0.05). The apparent digestive coefficients ranged from 89.8 to 92.9% for protein and from 68 to 71.4% for energy.