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Modern xylanases show greater versatility

While xylanase enzymes have been available for a long time and experienced nutritionists routinely use them in pig and poultry diets, this does not mean that development of these types of products has stopped. Xylanase feed products were originally developed to be applied to wheat based diets, often with the specific aim of reducing viscosity problems caused by highly viscous wheat varieties. Now their reach is much further.

The first generation xylanase products worked reasonably well for the purpose of reducing viscosity in barley or wheat based diets, but occasionally showed weaknesses in terms of... read more »

The role of rendered products in aquaculture feeds

With feed costs usually representing over half the operating cost of most finfish and shrimp farming operations, and an economic climate of steadily increasing feed ingredient and processing costs, considerable efforts have been placed by feed manufacturers on reducing feed costs through improvements in ingredient selection and feed formulation. read more >

Amino acid digestibility in heated soybean meal

Soybean meal fed to pigs undergoes heat treatment to destroy trypsin inhibitors and other antinutritional factors that impair the digestion of protein and thus reduce performance. However, heat treatment can damage nutrients as well. In particular, the Maillard reaction reduces amino acid digestibility by combining amino acids with sugars to produce biologically unavailable compounds. read more >

Betaine hydrochloride: An essential nutrient in broiler diets

Betaine is a known functional nutrient in broiler nutrition, which was in the past mainly used as betaine anhydrous extracted from sugar beets. Nowadays, it is also available as betaine hydrochloride from synthetic production. read more >

Sample analysis – Is there a ‘right’ result?

Whatever method you use or property you measure, analytical tests will always involve a degree of uncertainty – as a result of, for example, inaccuracies in weighing and measuring. Analyse the same sample twice and you’re likely to get two slightly different results. Both will essentially be correct – the key is knowing how to compare them, and understanding the possible causes of error. read more >

Aftaa on raw materials: How to manoeuvre in times of uncertainty?

The 27th Aftaa* conference on raw materials took place in Paris on 30 November and 1 December 2011. With a more proactive organisation consisting of, for the first time, practical workshops for the delegates, this annual event is always a good opportunity to get a better understanding of the main raw materials markets. read more >

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