Thursday, February 14, 2019

Optimising feed mill output

by Detlef Bunzel, Evonik, Germany

An efficient feed production line is one that has been designed to handle the types and amounts of feed that need to be produced. Optimising the balance between batch size and batch frequency plays a pivotal role.

Two critical questions need to be addressed when designing the feed production line - “What is the optimum mixer size for the feed mill?” and “How many batches per hour should be produced?” It is important in every case to find a balance between batch size and batch cycle time. For example, if the aim is to produce 30 tonnes of feed per hour, the production line and equipment could be designed to produce 30 batches of one ton each per hour, 15 batches of two tons each per hour, or 10 batches of three tons each per hour.
 


Optimum mixer size
Typical mixer sizes in feed mills range from less than one ton to six-eight tons per batch. Most feed ingredients, about 95 percent, are usually added to the mixer as dry bulk. Process steps before and after the weighing and mixing line are virtually continuous and, therefore, the mixer must be able to keep pace with the pellet mills. The capacity of the mixing line is calculated as batch size multiplied by the number of batches per hour. For example, output (ton / hour) = batch size (ton) x number of batches/hours. Each given output can be met by varying the batch size and frequency.

Mix time
Depending on mixer design and quality expectations, mix time may vary from around 60 seconds to four-five minutes, or even longer. While in a double ribbon mixer it takes more than 200 seconds to achieve a good coefficient of variation, a paddle mixer may achieve a comparable level of homogeneity in less than 60 seconds. Considering the time requirements for mixer filling and discharging, total cycle times of two-six minutes might result, which corresponds to 10-30 batches per hour.

Sequence of the batch mixing process
The time sequence of the batch mixing process is illustrated in Figure 1 (below) and can be structured in four blocks:

1. Dosing time
2. Mixer fill and discharge time
3. Mix time
4. Discharge time of bin after mixer

The batch cycle time is the shortest time span in the diagram, after which the mixer may be re-filled. Figure 1 represents a best-case scenario. The batch cycle time in this example is three minutes and 15 seconds, while time for filling and discharging the mixer is 15 seconds each. The total mix time is two minutes and 45 seconds. Half of the mix time is reserved for mixing dry ingredients before liquids are sprayed into the mixer, while the spraying time is one minute with 30 seconds final mix time to incorporate the liquids into the dry mash. Assuming all batches take the same time, more than 18 batches would be produced per hour.


Read more 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

Zheng Chang company profile



Zhengchang
, established in 1918, has made constant innovations in feed machinery industry and accumulated a wealth of experience in tackling the various challenges facing feed companies and, more importantly, is able to offer a range of comprehensive solutions.
Zhengchang has now evolved into China’s largest manufacture of feed machinery and has 16 branches in China with over 1300 staff and more than thirty offices all over the world. 

Zhengchang to date has successfully constructed more than 2000 turnkey projects world around the world, covering fields of poultry and livestock feed, aquatic feed, pet feed, premix feed, sawdust pellet, fertiliser, silo storage, pasture, electrical control and garbage treatment, etc.

Zhengchang projects are designed to deliver to the client higher feed quality, higher overall capacity and more profits. 
Zhengchang have conquered challenges one after another for the customers and accumulated rich experience over the past 90 years.

They are now making great endeavors to apply their latest achievements to feed, pasture, environment protection, fertilizer, sawdust shaping industries.


Zhengchang is more than a professional partner who can provide advanced machinery, technology and management ideas.

It is also a true problem solver who knows you well during your development. Zhengchang is with you every step of the way.


Visit the 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

International Aquafeed team reporting on Aquafarm 2019, Italy

AquaFarm 2019, the third edition of the International conference and trade show event dedicated to the technologies, products and best practices of sustainable production of fish, is currently under way at the Exhibition Centre of Pordenone, Italy.

The event runs 13 – 14th February, International Aquafeed are currently in attendance bringing live updates via Twitter, and to prepare a show report which will be featuring in an upcoming edition of the magazine.
 
Image credit: International Aquafeed

Aquafarm 2019 is an International two-day event dedicated to and reserved for operators of the Euro-Mediterranean sustainable aquaculture industry, one of the food production activities with the highest growth rate worldwide, which supplies 46 percent of the total amount of fish consumed and is exceeding deep sea fishing as a source of supply.

Moreover, using sustainability criteria, aquaculture could become the most advantageous zoo technical activity with regards to the relationship between foodstuff used and product obtained. The event provides the opportunity to meet the operators involved in the industry – from breeding, processing and transformation up to distribution and consumption – with the chance to meet demand and offer, professional updating and networking.

Visit the International Aquafeed Twitter page, HERE.
Visit the Aquafarm 2019 event 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, February 13, 2019

Cryo-preservation: The future of feed

by Rebecca Sherratt, Production editor, Fish Farming Technology & International Aquafeed

Innovative live feed distributors Planktonic revealed at the 2018 Aquaculture Innovation Europe conference in London, UK, their secret source of live feed for larval shrimp and finfish.

The hatchery feed production sector has been left wondering what exactly is Norway-based Planktonic’s secret behind their marine feeds, and Planktonic CEO, Rune Husby, finally confirmed it to be barnacle nauplii. This miraculous innovation has proven especially popular in Norway, Planktonic already having 30 percent of the starter feed market for cleaner fish produced in Norway alone.
 

Husby went on to state that barnacle nauplii is an excellent alternative to artemia and rotifiers, with an “optimal nutritional profile, unparalleled biosecurity and an unparalleled stability in product quality.”

Planktonic’s commercial success, CryoPlankton, uses liquid nitrogen to cryo-preserve the barnacle nauplii, to allow hatchery managers to “revive them again” when needed.

What does this mean for hatcheries?
Several years ago the fish sector in Norway were given some samples of the new barnacle nauplii feed, and results had only been positive. Lumpfish and wrasse, Husby notes, displayed “improved growth and higher stress tolerance” compared to those fed on artemia and rotifiers. Trials were also successful in Greece, Portugal, where the fish fed this specific live feed had improved rates of survival, growth and a lower presence of vibrio, which commonly causes food-borne infections in humans upon exposure. Ecuador fish farms also noted similarly successful effects from the innovative feed when given to shrimps.

These endless successes only further accelerated the growth of CryoPlankton, into its now hugely successful commercial venture, with sales and production only continuing to increase and expand.

Other benefits of the barnacle nauplii cryo-preserve feed include its ease of use. The feed need not be kept and cultivated as live stock, it is always ready when the fish need to eat. Planktonic also state that the time spent cleaning tanks for bacteria growth reduces to almost zero, with the use of the new fish feed.

The feed takes up minimal storage, making hatcheries increasingly more space efficient, alongside being a much more low-maintenance option. Mr Marco Schaer, CEO of SalMar at Langstein, stated at the 2017 Cleanerfish Conference, that through his use of Planktonic feed, the mortality rates of his cleanerfish have been reduced from 18 percent to three percent. For farmers who want to be supplied with barnacle nauplii fish feed, the process is remarkably simple.

Planktonic deliver the frozen feed in what they define as ‘user-friendly quantities’, in pellets what can easily be stored and frozen, at -196 degrees Celsius. The end-user need only take a desired amount of CryoPlankton pellets, thaw, wash and revitalise them, ready to feed their fish. Salmon do not, incidentally, require live feed, but can feed on inert feed from birth.

Due to their status as being cryo-preserved, this feed is also readily available for farmers all year round. The simplification of the process means that the feed is more accessible to a wider range of farms, with a competitive cost. Planktonic recommend barnacle nauplii feed as an alternative both to dry feed and artemia. “When we have tests and demonstrations for fish farmers, we have to spend the first few hours explaining the simplicity of our product.

They are so used to spending a lot of time and labour on live feeds that they do not believe that we can supply a product as simple as we do,” says Husby. Biosecurity also no longer need be an issue for farmers who choose barnacle nauplii live feed. Traditional feed cultures often display readings up to 50 percent opportunistic bacteria present, such as vibrio and pasteurella, a dangerous possible source of infection for consumers. B

arnacle nauplii live feed, when analysed for various viruses and parasites, has repeatedly proven to show no detection of multiple parasites, also including nodavirus, VHS-virus, salmonella, furunculosis and amoebic gill disease (AGD). The minimal bacteria quantities are achievable thanks to Planktonic’s innovative microbe-suppression technologies. Furthermore, the cryoprotectant agent, as well as the freezing process, also kills microbes.


Read more 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

AFIA, Feedstuffs name Famo Feeds as 2018 Feed Facility of the Year

The American Feed Industry Association and Feedstuffs congratulate Famo Feeds of Freeport, Minn., US, for being named the 2018 Feed Facility of the Year (FFY). Gary Huddleston, AFIA's director of feed manufacturing and regulatory affairs, announced that the family-owned feed company won the award during AFIA"s Feed Production Education Program, held today at the International Production & Processing Expo, happening this week in Atlanta, Ga.
Famo Feeds accepts the 2018 Feed Facility of the Year award. From left to right: Joel G. Newman, AFIA; Sarah Muirhead, Feedstuffs; Bruce Crutcher, AFIA Board Chairman; Tom Beste, Famo Feeds; Kurt Marthaler, Famo Feeds; John Beste, Famo Feeds; Gary Huddleston, AFIA.
Image credit: AFIA

"Famo Feeds was selected as our winner because they do a fantastic job of serving the needs of their customers, while investing in a new plant and continuing to spend money on improvements," said Mr Huddleston. "Famo Feeds is a family-owned business, the first ever to win this award, and I think that shows in how they treat their customers."

The FFY award recognises overall excellence in feed manufacturing operations, from the company's commitment to safety, quality and regulatory compliance to employee development to overall operating efficiencies.

To date, only 33 facilities have received this esteemed industry award. Famo Feeds is an animal nutrition business that manufactures and markets a full-line of livestock and poultry feeds. Serving a customer base in the Upper Midwest US, the company is focused on the dairy and beef sectors but also offers feed products for horses, gamebirds, chicks, rabbits and more. There are many factors that helped Famo Feeds achieve the FFY award, including its uniqueness as a small family-owned business.

For a smaller facility, Famo Feeds does an excellent job of complying with regulations in the feed industry, especially the Food Safety Modernisation Act. The company maintains a strong food safety plan and is constantly monitoring its operations to ensure quality standards are met. The facility maintains certifications in hazard analysis and critical control points, Facility Certified Institute-Restricted Use Protein Products and Safe Feed/Safe Food.


Read the full article on the Aquaculturalists 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

Nutriad company profile



The Nutriad story
The global population increases 50 percent in the next four decades.  Livestock production and aquaculture has never been more challenging.  Limited availability and changing quality of raw materials challenges intake, growth and performance.

Growing customer awareness and governmental regulations, especially related to health and safety, challenge your business. As manufacturer of state-of-the-art feed additives for more than 50 years they know the agricultural market. Still every day they are passionate about theirwork.

Their ambition is to be their customers’ first choice in palatability, mycotoxin management and digestive performance. Every day their people work on finding ways to improve your production.

Being active in more than 80 countries, they understand the global issues thoroughly. The experience of their dedicated local product specialists is available for you. In direct contact with you, Nutriad create the best practical solutions for today and tomorrow.

Nutriad's people
At Nutriad they believe that their people are our most valuable assets. People whose passion and personal values drive the company’s performance all over the world. Meet some of their team members that help shape Nutriad across the world.

Visit the company 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

Tuesday, February 12, 2019

Pathogens in aquaculture

by Maxime Hugonin and Stéphane Frouel, MiXscience, France

Ubiquitous antimicrobial activity of a new feed additive against several pathogens in aquaculture farming systems

As a potential protein source of tomorrow, for a population always growing, the aquaculture industry is facing several challenges. To reach the demand, the yield production must be maximised. In this way, farmers always increase their stocking densities, going from intensive culture to super-intensive ones, leading to new pathogens appearances and propagations with a multiplication of disease outbreaks.
 


The first people impacted by these issues are the farmers. This pathogenic pressure significantly impacts the economics of farming. The main solution to this issue remains the use of antibiotics, thanks to their easy use in curative treatment and their visible and rapid effects. Unfortunately, the use and abuse of chemicals raises public health concerns, because of antibiotic resistance, and adverse effects on the environment. Then, this remedy participates to the bad image associated to aquaculture production and produces shifts in the public opinion.

Active researches are ongoing in their hard work to explore alternatives. This article reports on the use of a natural phytogenic, based on specifically selected plant extracts, to control a broad spectrum of pathogens in aquaculture systems. The story of the product started from a laboratory, associated with RID trials, and ended in-field at larger and commercial scale. Thus, the antimicrobial effects of this phytogenic have been investigated both in vitro and in vivo, which provides a robust and pragmatic feedback on its benefits.


Read more 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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