search
for
 About Bioline  All Journals  Testimonials  Membership  News  Donations


Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 18, No. 3, 2014, pp. 537-541
Bioline Code: ja14071
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 18, No. 3, 2014, pp. 537-541

 en Effect of protein deficient diets on the growth and carcass protein ash ratio of African catfish Clarias gariepinus check for this species in other resources (Burchell 1822)
NWANNA, L.C.; OMOJOLA, I.; NWANNA, E. & ABIODUN, E.

Abstract

As the prices of fish feed ingredients continue to soar due to economic and environmental challenges, many fish farmers now produce practical fish diets deficient in protein, to minimize costs and maximize profits. This study evaluated the effects of such diets on the growth performance and carcass quality of African catfish, Clarias gariepinus check for this species in other resources . Five dietary treatments used contained 25%, 30%, 35%, 40% and 45% protein, respectively. Fish were fed for 70 days and the results showed high and improved growth performance in relation to the increasing dietary protein levels. Carcass protein, ash and minerals correlated positively with increasing dietary protein levels while the lipids had inverse relationship. Generally, fish fed diets of 25-35% protein had lower performance than those fed the control diets of 40 or 45% protein reported as the requirements for the fish. However, and in all cases, there were no differences in the performance of fish fed 40 or 45% protein diet, indicating no significant additional benefits from feeding the fish with 45% protein diet. The results also suggested the protein requirement of the fish to be above 35% and about 40%. The carcass protein-ash ratio was observed to be constant and ranged between 4.08 and 4.82.

 
© Copyright 2014 - Journal of Applied Sciences and Environmental Management

Home Faq Resources Email Bioline
© Bioline International, 1989 - 2017, Site last up-dated on 16-Oct-2017.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Internet Data Center of Rede Nacional de Ensino e Pesquisa, RNP, Brazil