Effects of dietary energy levels on growth performance, feed utilization and body composition of Rainbow trout
Journal Title: Journal of Research in Biology - Year 2012, Vol 2, Issue 6
Abstract
In order to compare the growth performance of trout with two extruded foods and their impact on body composition, an experimental test was conducted from June 1 to October 5, 2010 at National Center of Hydrobiology and Fish Culture. The comparison of the two foods with different formulation and different energy is perfomed in isoenergetic conditions. Following this study, two diets were formulated : the extruded diet A with 41% crude protein, 27% fat and 20% carbohydrates and the extruded food B with 39.7% CP, 24% fat and 15,7 carbohydrates, with digestible energy respectively of 21.32 Mj and 19.32 Mj. The initial average weight of the trouts was 100 g from the same batch of eggs. They were divided randomly into six fiberglass conical tanks at open circuit . The diet was assigned to six tanks for 50 fish each with three replicates for each diet and the experiment was conducted for 127 days. The ratio DP/DE of diet influenced feed conversion ratio and specific growth rate (p<0.05) . The best FCR was obtained with the extruded food A with 1.18 v.s 1.26. The higher IV was obtained with the low DP/DE (p<0.05). Final whole-body lipid content was positively related to dietary lipid levels and to digestible energy. Better retention of protein was obtained by the diet A. This study is consistent with current trends in the nutrition of fish and salmonids especially designed to reduce the ratio of DP/DE in order to have better perfomances of growth and a better quality of the fish
Authors and Affiliations
ABA Mustapha, Belghyti Driss, Elkharrim Khadija, Benabid Mohammed, Said Aboulfaraj
Keywords
Related Articles
- EP ID EP566086
- DOI -
- Views 50
- Downloads 0
Remediation of crude oil polluted soil in Otuogidi town in Bayelsa State of Nigeria using poultry manure
Remediation by poultry manure (RPM) is a farming treatment technology, which relies on biological processes to cleanup pollution in soil. In this study, remediation by poultry manure was employed on oil contaminated site...
Municipal Solid Waste (MSW) production and management in Kovilpatti Municipality
Studies were performed to appreciate the present status to municipal solid waste (MSW) in Kovilpatti town. MSW is a complex waste. It is a classic example where many different types of wastes aggregate from domestic, com...
Immobilization of glucose oxidase by starch-based nanofibers using plasma surface modification
In this research in order to produce blood sugar biosensor, an appropriate membrane for glucose oxidase immobilization by using nanofibers created from polymers of polyacrylic acid and starch are studied. They are biocom...
The birds of Patan district of Gujarat, India
Study on the birds of Patan district was conducted during 2006-2008. Observations on bird species were recorded at two locations in each Taluka. Observations on breeding status, residential status, and utilization of sit...
The effect of feeding with Saccharomyces cerevisiae extract(Amax) on ammonia and urea excretion in Persian sturgeon (Acipenser persicus) larvae by bioenrichment of Daphnia magna
Acipenser percicus larvae (mean weight:80mg) were fed enriched with Daphnia and Saccharomyces cerevisiae product (Amax) to ammonia and urea excretion in two conditions of starvation and satiation. Persian sturgeon larvae...