TY  - GEN
T1  - The effects of dietary supplement of immunogen on growth performance, and visceral and hepatic somatic indices of juvenile rainbow trout, Oncorhynchus mykiss (Walbaum 1792)
A1  - Keramat Amirkolaie, A.
LA  - English
YR  - 2020
UL  - http://discoverylib.upm.edu.my/discovery/Record/oai:http:--agris.upm.edu.my:0-17075
AB  - Prebiotics have been introduced as non-digestible feed ingredients, which stimulate growth and activity of beneficial bacteria. This study was conducted to evaluate the effects of Immunogen, a mixture of prebiotic on the growth performance and visceraland hepatic somatic indices in rainbow trout, Oncorhynchus mykiss (Walbaum 1792). A basal diet was formulated using common feed ingredients supplemented with Immunogen at 0, 1, 1.5, and 2 g.kg-1, leading to four experimental diets. Each experimental diet was randomly assigned to triplicate 1,500L tanks. Rainbow trout with an initial weight of 99.59±0.74g were randomly distributed in the experimental tanks. Results showed that inclusion of dietary Immunogen significantly increased the final weight and specific growth rate (SGR)(p<0.01)of rainbow trout compared to the control. Feed conversion ratio (FCR) and protein efficiency ratio (PER) were also improved after prebiotic administration to the experimental fish (p<0.01 and < 0.05, respectively). Dietary addition of 2 g.kg-1prebioticalso increased the relative liver and visceral weights (p < 0.05). The body composition and blood cortisol level were not influenced by the prebiotic inclusion (p>0.05). In conclusion, administration of the prebiotic Immunogen is capable of improving the nutrient efficiency and growth performance of rainbow trout confirming the positive effect of a mixture of prebiotics on the fish.
KW  - Oncorhynchus mykiss
KW  - Rainbow trout
KW  - Supplements
KW  - Growth rate
KW  - Ingredients
KW  - Growth
KW  - Bacteria
KW  - Cortisol
KW  - Nutrients
KW  - Fish farms
KW  - Diet preferences
KW  - Fishes
KW  - Feed efficiency
KW  - morphology
KW  - Rachycentron canadum
KW  - Sparus aurata
KW  - Oligosaccharides
ER  -