In the media


Transition with precision

Publication date: October 2019
Source: De molenaar nr. 15

With the international conference "Nutrition in transition" in November, Schothorst Feed Research marks the institute's 85th anniversary. Moreover, the meeting offers a platform for the farewell of researcher, director and research director Piet van der Aar. He officially ends his long career at SFR. The Dutch magazine De Molenaar spoke with Piet about his experiences in the feed industry.

You can read the translated article here > 

You can read the original Dutch article here > 


Applied Nutrition: Hands on Experience

Publication date: July 1019
Source: Poultry World

During the Feeds & Nutrition course, many aspects of feed formulation were covered. The yearly recurring event is designed to quickly inform the participants about the main theoretical and practical aspects of everything involved in feed production.

Poultry nutritionists need to combine the theoretical knowledge about digestive physiology and biochemistry of feedstuffs to formulate diets. The goal of nutrition is to provide essential nutrients to the animal for an efficient production, but also to assure animal welfare and health, and a low excretion of non-digested nutrients to the environment. 

You can read the article on the website of World Poultry:

Read the complete article >



And when do you milk 45 kg per cow?

Publication date: January 2019
Source: Top Agrar

Healthy cows with a lactation capacity of 12,000 kg and a lifelong performance of 100,000 kg: how to do that? This was the theme during Dairy Event organized by Top Agrar. Wilfried van Straalen was one of the three speakers during this event. During his presentation, Wilfried explains the principle of the E-Dairy system. Wilfried concluded his presentation with the recommendation to offer glucogenic nutrients from resistant starch and propionic acid at the start of the lactation to prevent ketosis. After the risk period of 60 days, the energy can also be extracted from fat. Saturated fatty acids can be used for this.

Click below for the articles that have appeared in the Top Agrar journals. Both articles are written in German.

 Article in Top Agrar

 Article in Top Agrar südplus

Below is a English translation of the part of the article about the presentation of Wilfried:

Evaluation systems based on the Net Energy Lactation (NEL) such as in Germany are not suitable for high-producing cows. Because they do not sufficiently take into account the actual digestion in the rumen and small intestine. This is what Wilfried van Straalen of the Dutch research institute Schothorst Feed Research says.

Cows with a daily milk yield of up to 28 kg digest about two thirds of the nutrients in the rumen and about one third of the nutrients in the small intestine. In contrast, cows with a higher daily milk production digest three-fifths of the nutrients in the rumen and two-fifths in the small intestine. "Rumen fermentation can not be further increased for these animals, because otherwise rumen acidosis can develop. Therefore high-producing cows need more resistant nutrients for the small intestine," says Van Straalen.
The E-Dairy system: in order to properly evaluate the feed, the Dutch have developed the E-Dairy system. This makes a strict distinction between nutrients that are needed for rumen fermentation and nutrients for the milk components fat, urea, lactose and protein. This enables on the one hand optimal rumen fermentation. "And on the other hand, we can influence the milk components fat and protein with targeted selection of nutrients. Because higher lactose automatically means more milk, the amount of milk can also be increased," says the scientist.
The overview below clarifies the relationship: sufficient glucose is important, so that the animals do not get ketosis. At the same time, sufficient glucose is required for a high milk yield (high amount of lactose). The glucose can come from amino acids. However, the amino acids regulate the protein content of the milk. It is therefore better if the glucose comes from the starch. For this purpose, a high percentage of bypass starch is needed, which is only digested in the small intestine.
Recommendation from Van Straalen: "At the beginning of the lactation, the glucogenic nutrients must be derived from bypass starch and propionic acid to prevent ketosis. After the 60-day risk period, the required energy for higher milk yields can also be extracted from fat. fatty acids advised. "



Interaction between nutritionists and vets

Publication date: August 2018
Source: Poultry World No 6, 2018

Composing good quality feed is an art in itself, however making the best feed possible can only be done with knowledge of the bird itself. That is why Schothorst Feed Research focused on the interaction between nutritionists and veterinarians in its latest international Feeds & Nutrition course. 

Read the complete article >




Laura Star on the Dutch Knowledge Day in India

Publication date: December 2017
Source: Poultry Express

The embassy of the Netherlands with co-operation of the Netherlands Business Support Office (NBSO) and the India Netherlands Business Association (INBA) organised the Dutch Knowledge Day in India. Laura Star (SFR) gave a presentation about precision feeding. She highlighted developments of the Dutch poultry production (i.e. slow growing broilers, ban on beak trimming, reduction of mineral excretion) that affect dietary requirements. She explained that precision feeding involves the correct amount of feed with the correct composition at the right time to fulfil dietary requirements. For the audience it was an eye opener that feeding practices are not as simple as it may appear and that there is a lot of science into it to make safe and profitable production in the animal.

Read the complete article >
On page 20



Solution for the phosphate quote

Publication date: December 2017
Source: Wochblatt für Landwirtschaft and landleben

In this German written article Wilfried van Straalen gives an overview of measurements to reduce phosphorus production by ruminants in the Netherlands. The Schothorst Feed Research solution for the challenge to reduce phosphorus excretion of high producing dairy cows is the digestible phosphorus system for ruminants.

Read the complete article (in German) >



Improve body weight development of the sow to improve piglet vitality

Publication date: 12 December 2017

On 12 December Topigs Norsvin organised a webinar on how to feed modern sows. Modern sows have a high performance.  To reach this high performance the sows need to be fed according to their requirements. Body weight development during gestation and reducing weight losses during lactation are very important. Xandra Benthem de Grave from Schothorst Feed Research discussed important nutritional aspects for an optimal weight development of the sows. Chris Opschoor from Topigs Norsvin showed the (financial) consequences of skinny and fat sows.

Watch the complete webinar >



the benefits to the feed industry of using an advanced net energy system

Publication dat: May 2014

The Net Energy system offers the practical nutritionist the opportunity to adapt feed formulations to the varying chemical composition of feedstuffs when a NE-system based on nutrient (digestibility) is used. In general feed costs will be reduced by 1-2% by using a NE-system over a ME or DE system. Moreover an animal category specific NE system, specifying different E-piglet®, NE-growing/ finishing pigs, E-gestate® and E-lactate® system will offer additional benefits in terms of technical performance and reducing feed costs.

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New knowledge from The Netherlands to Denmark.

Publication date: August 2017
Source: Svin

The future is precision feeding of weaners and finishers. DLG gathers knowledge and inspiration about feeding in Holland. There have been no Danish digestibility tests in the last 30 years. Hans Aae, DLG, sees that as a problem, not least because there constantly new raw materials or new methods of processing raw materials. In part, this is why DLG started cooperating with research station Schothorst Feed Research four years ago.

This is an article published in the Danish magazine "Svin" written by Morten Thomsen.

Read the complete article (translation of the original Danish article) >



Effect of debeaking on laying hen performance

Publication date: June 12, 2017
Source: Poultry world

From 2018 onwards, it will be forbidden to debeak laying hens in the Netherlands. For poultry farmers affiliated to the German KAT association the ban on beak trimming has been in place since the start of 2017. Dutch animal nutrition facility, Schothorst Feed Research, in collaboration with seven Dutch feed mills (ABZ Diervoeding, AgruniekRijnvallei, CAV Den Ham, E.J. Bos, ForFarmers, Vitelia and Voergroep Zuid), performed a study in which effects of dietary treatments on production performance of debeaked and non-debeaked laying hens were tested. Large differences in performance between debeaked and non-debeaked laying hens, irrespective of dietary treatment, were found.

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Animal fat: Nutritious ingredient for animal diets

Publication date: May 2015
Source: All about feed

Adding a feed or oil ingredients supplies the animal with essential fatty acids, needed for production and growth. The effectiveness of including a fat or oil depends on the total feed formulation. In this article it is explained what nutritionists shoud consider.

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