Sunday, July 15, 2018

16/07/2018: Wageningen University and Nutriad present results on butyrate research

Feed additive producer Nutriad, a pioneer in sodium butyrate applications for the animal feed industry, co-financed a research project on the use of butyrate as feed additive. 

The multi-year research project was concluded with the Ph.D. thesis of Pierre Moquet on the effects of butyrate in broiler diets, which he successfully defended on June 22nd at Wageningen University (Netherlands). 
 
Image credit: Nutriad
Dr Moquet started his Ph.D.-research in the Wageningen Animal Nutrition Group (WUR) to investigate an important conundrum related to the use of butyrate as an additive in animal feed: on one hand, this molecule has received considerable attention for its potential to improve intestinal health and animal performance, while on the other hand, the mechanisms underlying these effects have been described as very diverse and seemingly less consistent.

Read the full article on the International Aquafeed website, HERE.

The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by
Perendale Publishers Ltd

For additional daily news from aquaculture around the world: aquaculture-news

16/07/2018: Commercially available methionine sources and its implications on aquaculture feeds

by Dr Alexandros Samartzis Senior Technical Service Manager, Evonik

All living organisms, including fish and crustaceans, do not require protein per se, but amino acids (AA), the building blocks of proteins.

All AA structurally contain three common parts: a central carbon bond to a hydrogen, a nitrogen containing amino group and a carboxylic group. Proteins, consisted of few up to thousands of AA, having numerous structural and metabolic functions. In animal production, the most direct result of AA deficiencies translates to reduced growth. Traditionally, it was the economic incentive, which resulted in the use of supplemental AA in diet formulation. However, there has been a gradual evolution with more emphasis directed towards sustainability and total nutrient supply.
 

In aquaculture feed formulations, Methionine (Met) is usually the first limiting essential amino acid (EAA) especially in low fish meal (FM) diets. It is therefore, required to include a supplemental source of Met in order to meet the feeds’ specification, targeting the animal’s requirement for this particular EAA. While evaluating supplemental nutrients or additives for use in feed formulation, three parameters needs to be considered: (i) nutritional value (biological effectiveness) of the supplemental nutrient, (ii) stability, homogeneity etc. during the feed production process and (iii) physical properties of the nutrient source during feeding practice.

There are several commercially available Met sources in the market like DL-Met (DL-Methionine for Aquaculture), DL-Methionyl-DL-Methionine (AQUAVI® Met-Met), L-Met (L-Methionine), Methionine Hydroxy Analogue-free acid (MHA-FA or liquid MHA) and Methionine Hydroxy Analogue calcium salt (MHA-Ca). Both terrestrial and aquatic animals can utilise crystalline AA such as Methionine; however, the biological availability of the different methionine sources differs greatly. The differences in biological availability are a reflection of differences in product matrix, digestibility, transport mechanism and metabolic conversion requirements.

DL-Met, as well as the dipeptide DL-Methionyl-DL-Methionine (Met-Met), are the racemic mixture of D- and L-isomer of Methionine and are commercially available as feed additive, with 99 percent DL-Met and 95 percent Met-Met (95 percent DL-Methionyl-DL-Methionine and two percent DL-Met) purity, respectively. As only the L-isomer can be utilized for the protein synthesis by the animals’ body, D-isomer is metabolically converted to L-isomer first through oxidation to keto-Methionine by the enzyme D-amino oxidase and then transaminated by transaminase enzyme to L-Met. The enzymes required in the conversion of D-form to L-form are not at a rate-limiting factor in fish and shrimp alike poultry and swine.


Read the full article, HERE.

The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by
Perendale Publishers Ltd

For additional daily news from aquaculture around the world: aquaculture-news

PCE company profile

Pelleting Consumables Europe (PCE) is a global supplier of tailor-made, high-grade precision ring dies and roller shells.
Thanks to years of experience in the pelleting industry they can provide their customers expert advice on the geometry and design of Ring Dies and Roller Shells.

Manufacturing reliable ring dies and roller shells for compound feed, biofuel and recycling industries and a wide range of other applications.

Their tailor-made Ring Dies and Roller shells are available for pellet presses of all brands and are manufactured at their ultra-modern manufacturing facility.

As the entire process takes place In-house, they can guarantee short lead times and optimum quality.

PCE ring dies and roller shells are made of high-quality steel. The Ring Dies are manufactured as standard from high-grade, high chrome steel X46Cr13, tempered to 53-55 HRC.

The associated Roller Shells are manufactured from 100Cr6 or 20MnCr5, depending on specific application.

According to the PCE website, “our company is continuously focussed on improving the life cycle of our products and to increase profits for our customers.”

PCE key features: 
- Longer life cycle
- Higher capacity
- Low power consumption

In addition to their products they also assist with the planning of your spare and wear part inventory.

A team of experts is available to guide you by selecting the right ring dies, roller shells and to set up a service level spare part management program.

PCE is your partner for just perfect ring dies and roller shells.

Visit the PCE website, HERE.

The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by
Perendale Publishers Ltd

For additional daily news from aquaculture around the world: aquaculture-news

Thursday, July 12, 2018

13/07/2018: Let algae feed your growth

by David Erlandsson, Co-founder of Aliga Microalgae, Denmark

For hatcheries, rearing robust, stable and high performing cultures with low mortality rates requires expertise. Any issues that occur early in the process can easily amplify in the latter stages of growth.

It is therefore important that larvae and juveniles are fed nutritiously during their first weeks to maximise the production yield of the fully-grown species. As microalgae are essential initial diets for many marine species, successful and reliable microalgae cultivation demand skills and expertise too. Particularly when it comes to producing consistent nutritional and bio-secured quality at greater volumes.
 


Most hatcheries are today cultivating their own microalgae, to a greater or lesser extent. On-site cultivation is often labour and resource intensive with imminent risks of culture crashes. As a complement to hatcheries’ on-site cultivated microalgae, Aliga has developed the Aquapaste product range. A pre-packaged and easy to handle off-the-shelf-concentrated paste line with nutritive profiles and high cell concentrations that provide the protein, vitamins and essential fatty acid enrichments needed to support the growth and wellbeing of live prey and larvae.

At our indoor production facility in northern Denmark, our closed and fully automated photobioreactors operate under a continuous 24/7 regime to produce a high and stable yield. To eliminate any risk of waterborne pathogens and contaminants being brought into our cultures via collected seawater, we formulate and use only our own artificial seawater throughout the production process.

The flexibility in our bioreactor’s control and lighting systems also enables the setting of the optimal growth parameters for each individual strain, this so the desired nutritional profile of the strains can be formed. These cultivation procedures in combination with gentle harvesting, dewatering and packaging processes guarantees nutritious and bio-secure concentrated paste products with very high cell survivability and almost purely intact cells.

Our R&D team are continuously improving our existing cultivars and develop new ones based on the needs and demands of our hatchery customers. We cooperate with some of the leading universities, research institutes and industrial partners in Europe who assist in developing, testing and quality-assuring our products. This to make sure that every Aquapaste bag produced, packed and shipped from our facility passes our rigid controls.


Read the full article, HERE.

The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by
Perendale Publishers Ltd

For additional daily news from aquaculture around the world: aquaculture-news

Almex company profile




Almex specialises in single screw extrusion equipment, from the extrusion unit to complete installations. They are a family owned, independent company.

Almex extruders and Contivar Expanders are in use worldwide for fishfeed, oil extraction, petfood, animalfeed plants, the food industry and the processing and chemical industries. Almex started early 1970's with repair and installation of extruders.

For use in Europe these units needed much modifications, so they decided to design and built in the Netherlands a complete range of extruders for 500 to 15.000 kg/hour capacity.

These extruders did find their way to clients worldwide. Today the largest extruder has a diameter of 400 mm, a barrel length of 4800 mm and a drive of 500 kW.

Visit the Almex website, HERE.

The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by
Perendale Publishers Ltd

For additional daily news from aquaculture around the world: aquaculture-news

Wednesday, July 11, 2018

12/07/2018: AFIA recognises animal scientists with Nutrition Research Awards

The American Feed Industry Association honoured two individuals in the animal science field at the American Society of Animal Science annual meeting in Vancouver, Canada, July 9th.

Juan Loor, Ph.D., of the University of Illinois, received the AFIA-ASAS Ruminant Animal Nutrition Research Award, and Ruurd Zijlstra, Ph.D., of the University of Alberta, Canada, received the AFIA-ASAS Non-Ruminant Animal Nutrition Research Award.
 


"Each year, AFIA honours leaders who have significantly advanced animal nutrition through their research," said Paul Davis, Ph.D., AFIA's director of quality, animal food safety and education. "Drs.  Loor and Zijlstra have spent their careers researching cattle and swine nutrition and providing guidance to students in these fields, exemplifying the purpose of these awards."


Read the full article on the International Aquafeed website, HERE.

The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by
Perendale Publishers Ltd

For additional daily news from aquaculture around the world: aquaculture-news

12/07/2018: AFIA welcomes Louise Calderwood

The American Feed Industry Association is pleased to announce the addition of Louise Calderwood as its director of regulatory affairs, effective July 2nd.

Ms Calderwood will provide proactive industry and technical leadership on regulatory and state issues related to pet food and equine nutrition and general regulatory issues. She will work with the Association of American Feed Control Officials and lead AFIA's pet food and equine committees.
 
Louise Calderwood
Image credit: AFIA

"We are extremely pleased to find someone of Louise's talent, expertise and experience to serve on our legislative and regulatory team," said Richard Sellers, AFIA's senior vice president of public policy and education. "I've known and worked with Louise for many years and am excited to see her join AFIA, and I know she will represent our members well."


Read the full article on the International Aquafeed website, HERE.

The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by
Perendale Publishers Ltd

For additional daily news from aquaculture around the world: aquaculture-news



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