@article{fdi:010066479, title = {{G}rowth, survival and the histology of the digestive tract of juvenile {O}steoglossum bicirrhosum ({C}uvier, 1829) fed three diets containing different protein and lipid levels}, author = {{D}arias, {M}aria {J}ose and {G}ómez, {M}.{A}. and {T}ello, {S}. and {G}isbert, {E}.}, editor = {}, language = {{ENG}}, abstract = {{T}he influence of three commercial diets with different protein and lipid contents (40:14, 45:8, 48:8 protein:lipid - {P}:{L}, in % dry weight of diet) on growth performance, survival and the histology of the liver and intestine was analysed in early juveniles of silver arowana, {O}steoglossumbicirrhosum, reared in captivity. {I}ndividuals (initial wetweight-{W}-i=1.07 +/- 0.04g; total length-{TL}= 6.0 +/- 0.17cm) were raised in triplicate (n=12 fish per tank) at 26.2 +/- 0.1 degrees {C} and fed one of three commercial diets over 60days. {A}t the end of the trial, survival (90.5 +/- 3.3%) and condition factor (0.5 +/- 0.02) were not affected by dietary treatments, whereas specific growth rate, {TL} and {W} gain were lower in animals fed the 40{P}:14{L} diet. {H}istological analysis revealed a larger accumulation of lipid droplets in the intestines of the group supplied with the 40{P}:14{L} diet, as well as a larger surface of hepatic lipid vacuoles compared to the other treatments, although no signs of steatosis were observed. {J}uveniles fed the 48{P}:8{L} diet displayed the lowest liver lipid accumulation; however, a protein content higher than 45% did not improve growth performance. {T}he intestine and liver lipid accumulation of individuals fed the 45{P}:8{L} diet might indicate a more balanced lipidic metabolism. {I}ntestine and liver histologies proved to be useful markers to identify the nutritional condition in juveniles of {O}.bicirrhosum, even when differences in nutritional composition were subtle (i.e. protein variation of 3%).}, keywords = {{AMAZONIE} ; {PEROU}}, booktitle = {{P}roceedings of the 4th {I}nternational {C}onference of the "{R}esearch {N}etwork on {A}mazonian {I}chthyofauna" ({RIIA}) {S}eptember 30 - {O}ctober 2, 2014 {C}ochabamba, {B}olivia}, journal = {{J}ournal of {A}pplied {I}chthyology}, volume = {31}, numero = {no sp{\'e}cial {S}4}, pages = {67--73}, ISSN = {0175-8659}, year = {2015}, DOI = {10.1111/jai.12977}, URL = {https://www.documentation.ird.fr/hor/fdi:010066479}, }