Page 43 - New additives and ingredients in the formulation of aquafeeds

The efficacy of phytobiotics was tested under the field conditions for shrimp
production in Panama during the dry season (September 2009- February
2010) by Vaca et al. (2010). The dry season in Panama is characterized
by unstable climatological conditions, resulting in strong temperatures
fluctuations which in turn affect shrimp growth and increase the impact
of outbreaks of white spot virus (WSSV). During the trial, two treatments
were compared which only differed with regard to the supplementation or
not of a phytobiotic growth promoter (Sanacore® GM, Nutriad, Belgium) to
the standard feed used at the farm.
The supplementation of the phytobiotic feed additive resulted in improved
values for all productionparameters analysed in this study (Figure8). Survival
and processed crop yield (kg/ha) presented highly significant improvements
(p<0.03), amounting to a relative increase with 24% and 35% compared to
the control group, respectively. Although the other parameters did not show
significant differences, important improvements were observed for the
Figure 7: Percentage impro-
vement of growth and feed
conversion ratio (FCR) due to
supplementing a phytobiotic
growth promoter based on
microflora modulation (SANA-
CORE® GM) to a practical feed
of different aquaculture spe-
cies. Data show relative effect
on growth (for fish : SGR, %/
day; for shrimp g/week) and
feed conversion ratio (FCR)
relative to the performance of
the non-supplemented control
group in a feeding trial with
healthy animals. Feeding trials
were run in triplicate tanks
for Gilthead seabream Sparus
aurata (trial duration 56 days;
starting from 70g); Nile tilapia
Oreochromus niloticus (70
days; starting from 17g); and
white shrimp Litopenaeus van-
namei (56 days starting from
1g) (Coutteau et al., 2010)
Fig. 7: Percentage improvement of growth and feed conversion ratio (FCR) due to
supplementing a phytobiotic growth promoter based on microflora modulation
(SANACORE® GM) to a practical feed of different aquaculture species. Data show
relative effect on growth (for fish : SGR, %/day; for shrimp g/week) and feed conversion
ratio (FCR) relative to the performance of the non-supplemented control group in a
feeding trial with healthy animals. Feeding trials were run in triplicate tanks for Gilthead
seabream Sparus aurata (trial duration 56 days; starting from 70g); Nile tilapia
Oreochromus niloticus (70 days; starting from 17g); and white shrimp Litopenaeus
vannamei (56 days starting from 1g) (Coutteau et al., 2010).
Effect of
optimizing
gut health
and intestinal
microflora on
productivity and
economics of
semi-intensive
shrimp farming
the feedmill on large volumes of feed and avoiding major adaptations of
the production protocols at the farm. A synergistic blend of phytobiotics
was selected for their ba teriostatic and bacteri dal properties against
pathogenic and potentially pathogenic bacteria in vitro using the disk
diffusio method. T is blend was capable of promo ing gr wt significantly
in feeding trials with healthy specimens of different species of fish and
shrimp growing under controlled lab conditions (Figure 7).
Innovative approaches to reduce feed cost in aquaculture: optimizing nutrient utilization and gut health 41