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Improving Feeding Value Of Deoxynivalenol (DON)-Barley Intended For Swine By The Pearling Procedure – A Review

Volume 4 - Issue 3, March 2020 Edition
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Johnson, N. C., Iorliam, B
DON-Barley, Feeding-Value, Pearling, Procedure and Swine
Grains form the bulk of animal diets resulting in the competition between man and animals for grains. Feed formulators prefer the use of barley to corn and wheat, since they have similar digestible energy values coupled with the cheaper price of barley compare to corn and wheat. However, barley is more susceptible to DON contamination. DON is the major Fusarium mycotoxin-causing major economic losses in the agricultural industry. The presence of DON in cereal grains, such as barley is a major threat to its advantageous use in swine diets. Fusarium graminearum is majorly responsible for DON production. DON menace by F. graminearum is favoured by environmental conditions, such as moisture and high temperature triggering the proliferation of F. graminearum pathogen and DON accumulation in grains. Thus in growing seasons with high regular incidence of rain showers or snow there is the possibility of DON epidemics which may lead to major financial losses to growers and feed formulators as grains may not be suitable for human consumption as well as for animal feeds, especially swine. DON causes emesis, feed refusal and reduced feed intake in pigs. The ultimate goal of growers is how value can be added to their grains while nutritionists to reduce DON from feed grains. Since DON is typically found predominantly near the exterior surface of the kernel where infection begins pearling or polishing off the outer portions dominated by DON would produce a grain that can be incorporated into swine diets without emesis and reduced feed intake thereby culminating in ‘acceptable barley’ for swine, particularly barrows. This paper delves into the details of the ‘modus operandi’ of the pearling procedure of converting DON-infected barley to palatable feed ingredient for swine. The pearling procedure comes in handy as currently there are commercial machines that can readily be used to effectively convert DON-barley into a palatable grain for swine, such as the Satake Rice De-hullerTM.
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