@article{article_296773, title={USE OF BIOFUEL BY-PRODUCT FROM THE GREEN ALGAE Desmochloris sp. AND DIATOM Nanofrustulum sp. MEAL IN DIETS FOR NILE TILAPIA Oreochromis niloticus}, journal={Journal of Aquaculture Engineering and Fisheries Research}, volume={1}, pages={144–154}, year={2015}, DOI={10.3153/JAEFR15016}, author={García-ortega, Armando and Martínez-steele, Laura and Gonsalves, Dennis and Wall, Marisa M. and Sarnoski, Paul J.}, keywords={Nile tilapia,microalgae,diatom,green algae,fish feeds,Hawaii}, abstract={<p class="MsoNormal" style="text-align:justify;"> <span lang="en-us" style="font-size:10pt;" xml:lang="en-us">Algal by-product meals from
the Hawaiian biofuels industry were evaluated as ingredients in diets for ju­veniles
of Nile tilapia ( <i>Oreochromis niloticus) </i>. Four experimental diets were
formulated to fulfill fish nutri­tional requirements. The diets were made with
fish meal, soybean meal, whole diatom ( <i>Nanofrustulum </i>
sp.) meal, or defatted green algae ( <i>Desmochloris </i>
sp.) meal as the test ingredients. A
feeding experiment with juvenile tilapia of 2.6 ±0.1 g initial weight was
carried out in a freshwater recirculation system with each diet treatment
tested in triplicate tanks. Fish were fed the experimental diets to apparent
satiation twice a day for 12 weeks and fish weight was measured every three
weeks. Water temperature was maintained at 22.7 ±0.8 °C, salinity at 0.1
±0.0 ppt and dissolved oxygen at 5.6 ±0.5 mg/L. At the end of the experiment a significant effect (P<0.05) of diet
treatments was found in fish growth and feed utilization, with specific growth
rate, food conversion ratio, and retained nitro­gen efficiency being highest
for the green algae-based diet. Lipid content in the diets was lower than ex­pected
for the algae diets. Proximate composition analysis showed no significant difference (P>0.05)
in the protein content of the
fish bodies among the diets. Results indicate the suitability of the green
algae by-product meal as an ingredient in Nile tilapia diets. Diatom meal also
showed interesting potential for use as an ingredient in tilapia feeds. </span> </p> <p> </p>}, number={4}, publisher={Özkan ÖZDEN}