Azari, Abdolhamid, Hashim, Roshada, AzariTakami, Ghobad, Roohi, Aboulghasem (2013). Effect of Increasing Dietary Prebiotic GroBiotic®-A Concentration on Growth Performance, Body Indices and Haematological Parameters in Rainbow Trout (Oncorhynchus mykiss) Fingerling. , 1(4), 393-406.
Abdolhamid Azari; Roshada Hashim; Ghobad AzariTakami; Aboulghasem Roohi. "Effect of Increasing Dietary Prebiotic GroBiotic®-A Concentration on Growth Performance, Body Indices and Haematological Parameters in Rainbow Trout (Oncorhynchus mykiss) Fingerling". , 1, 4, 2013, 393-406.
Azari, Abdolhamid, Hashim, Roshada, AzariTakami, Ghobad, Roohi, Aboulghasem (2013). 'Effect of Increasing Dietary Prebiotic GroBiotic®-A Concentration on Growth Performance, Body Indices and Haematological Parameters in Rainbow Trout (Oncorhynchus mykiss) Fingerling', , 1(4), pp. 393-406.
Azari, Abdolhamid, Hashim, Roshada, AzariTakami, Ghobad, Roohi, Aboulghasem Effect of Increasing Dietary Prebiotic GroBiotic®-A Concentration on Growth Performance, Body Indices and Haematological Parameters in Rainbow Trout (Oncorhynchus mykiss) Fingerling. , 2013; 1(4): 393-406.

Effect of Increasing Dietary Prebiotic GroBiotic®-A Concentration on Growth Performance, Body Indices and Haematological Parameters in Rainbow Trout (Oncorhynchus mykiss) Fingerling

ECOPERSIA
Article 6, Volume 1, Issue 4 - Serial Number 6, 2013, Pages 393-406    PDF (481.47 K)
Authors
Abdolhamid Azari* 1; Roshada Hashim1; Ghobad AzariTakami2; Aboulghasem Roohi3
1Laboratory of Feeds and Feeding Management, Aquaculture Research Group, School of Biological Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia.
2Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
3Caspian Sea Ecological Research Institute, P.O.Box 961, Khazarabad Boolvar, Sari, Iran.
Abstract
An 84-day feeding trial was carried out onfingerling (4.44 ± 0.06 g) rainbow trout (Oncorhynchusmykiss, Walbaum, 1792) to evaluate the effect of dietary supplementation with a commercial prebiotic GroBiotic®-A (G-A) on the growth, feed efficiency, haematology and immunlogical parameters. Ttreatments containing various inclusions of G-A (0 %, 0.5 %, 1.0 %, 1.5 %, 2.0 %, 2.5 %, and 3.0 %) were added to a commercial fish dietand were fed twice daily at 2-6 % of body weight. The highest weight gain (WG), specific growth rate (SGR) and average daily gain (ADG) were obtained in fish fed the diet containing 2.5 % G-A followed by 3.0 % inclusion (P<0.05). The highest feed efficiency (FE), protein efficiency ratio (PER) and net protein utilization (NPU) were also recorded in the 2.5 % G-A inclusion (P<0.05). Survival was significantly higher (P<0.05) in fish fed with 2 % and 2.5 % G-Asupplement (P<0.05). Although higher Hb, haematocrit, RBC, WBC, MCH, MCHC, MCV, lymphocytes, and neutrophils were observed at all G-A supplemented diets, the differences among themwerenot significant (P>0.05). On the other hand,significantly higher differencee (P<0.05) in lysozyme and immunoglobulin (IgM) concentrations wereobserved in 2.5% G-A inclusion. The results of this study indicated that 2.5 % G-A inclusionhad a better performance on growth and haematoimmunological parameters in rainbow trout fingerling.
Keywords
Feed efficiency; Fish; Growth performance; Oncorhynchus mykiss; Prebiotic GroBiotic®-A
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