Feed Technology In terms of economics, under non optimal conditions and a few days after a disease outbreak, growth performance would be highly depressed. The incomes from sales of the harvest may not compensate for feed cost and the farmer would lose money. The application of the phytogenic helped to provide a good profit by maintaining significant increase in survival (20% more in fish and 72% more in shrimp) and thus a higher harvested biomass. In contrast, the harvest revenue from the control ponds did not increase and there were losses due to feed costs. This process is explained in the didactic breakeven point diagram based on the tilapia trial conducted in a fish farm in Vietnam (Figure 4). We concluded that this new feed additive provides efficient control against a variety of pathogens and could be considered as a holistic and natural way of reducing the use of antibiotics in aquaculture systems. Trial data also showed the efficacy of the functional additive to counterbalance disease outbreaks and to maintain a reliable growth performance and farm profit. Moreover, this new phytogenic can be applied in a wide range of conditions either continuously as a prophylactic agent or during certain critical periods as a therapeutic agent. The optimal duration of application is at least 14 days before any known critical period or after the first appearance of disease symptoms.
Stephane Frouel
Clarisse Techer
Frederic Jozwiak
Dr Stephane Frouel is aquaculture specialist and is responsible for aquaculture project management including feed additives assays and worldwide trials. Email: stephane. frouel@mixscience.eu Dr Clarisse Techer is microbiology specialist and is responsible for microbiology and new bioactives projects. Email: clarisse.techer@mixscience.eu Frederic Jozwiak is aquaculture expert, responsible for the management of aquaculture products as well as providing technical support worldwide. Email: frederic.jozwiak@ mixscience.eu. All authors are with MiXscience, Avril group based in Bruz, Bretagne, France
BRINGING TOGETHER INNOVATIVE TOOLS FOR CUSTOMIZED AQUAFEED PROCESS SOLUTIONS. Great things are done by a series of small things brought together.
—Vincent Van Gogh
Wenger develops and assembles unique components that allow our clients to meet specific industry and application demands. Whether dictated by raw material availability, species requirements, growth stages or feeding habits, Wenger will tailor a system to meet your specific needs.
If maximum volume is crucial, the Wenger TX-3000 High Capacity Aquafeed Extruder produces the full range of products – at capacities up to 12,000 kg/hour. Complement the TX-3000 with the High Intensity Preconditioner (HIP) and use higher levels of fish oil or slurries.
The Wenger C2TX Shrimp Feed Extruder – with unique die technology and high shear conditioning – is the superior choice for uniform, high density aquatic feeds down to 0.8 mm in size.
We’re ready to help you select the right tools. Contact us now for industry-changing designs backed by the leading name in extrusion.
Turning ideas into opportunities. PROGRESSIVE AQUAFEED PROCESSING
Imagine the possibilities wenger.com BELGIUM
1 40Wenger15.InnovativeTools.Ad.186x131.indd July/August 2017 AQUA Culture Asia Pacific Magazine
TAIWAN
BRASIL
CHINA
INDIA
8/2/15 8:10 PM