Biotechnology in Animal Husbandry 2013 Volume 29, Issue 2, Pages: 353-362
https://doi.org/10.2298/BAH1302353O
Full text ( 339 KB)
Impact of mannanoligo saccharides on performance traits of rainbow trout
Obradović S. (Faculty of economics and engineering management, Novi Sad)
Živković B. (Institute for Animal Husbandry, Belgrade)
Đekić V. (Centre for Small Grains, Kragujevac)
Šekler M. (Veterinary Specialist Institute, Kraljevo)
Živkov-Baloš M. (Scientific Institute of Veterinary Medicine, Novi Sad)
Marković M. (Faculty of Veterinary Medicine, Belgrade)
The effect of mannanoligo saccharides (MOS) as a food additive, applied at a
concentration of 0.2% (O-I group of fish) and 0.3% (O-II group of fish) on
morphometric characteristics and primary production of the Californian trout
was investigated. The experiment was conducted on 450 fish divided into three
groups with 150 individuals in each group, and lasted 40 days. The analysis
of obtained results established the beneficial effect of the applied
additives on morphometric parameters of the growth rate of fish, their final
mass and final linear dimensions, and their growth, but no statistically
significant differences (p> 0,05) were established. The highest body weight
and body length of studied groups was achieved by trout of O-II group (118.49
g, 19.59 cm), followed by trout of O-I group (118.04 g, 19.58 cm) and the
lowest K-group fish (115.94 g, 19.56 cm). Adding MOS in the feed mixture for
trout had a beneficial effect (p> 0.05) in the exercise of lower feed
conversion (FC) and better values of main production indicators: condition
factor (FC), protein efficiency ratio (PER), the specific rate growth rate
(SGR) and production index (PI) compared to the K group of fish that were fed
diets without added mannanoligo saccharides. The best results were achieved
by O- II fish group, and expressed in relative terms in comparison to the K
group of fish: better feed conversion by 5.61%, a better utilization of
protein feed value by 5.94%, a higher value of condition factor by 1.73 %,
the specific growth rate by 2.26% and a better value of production index by
8.27%.
Keywords: mannanoligosaccharides, rainbow trout, production indicators