ISSUE FOCUS 26 FEED & ADDITIVE MAGAZINE May 2024 “To meet the demand for animal protein, optimal feed utilization is key to improve productivity. Maximising output with minimal input will contribute to a more economic industry. One of the most expensive ingredients, fat source, is not being used efficiently because of factors impacting digestion and absorption in the digestive tract. Implementation of a nutritional emulsifier can be a game changer here.” Nutritional emulsifiers are feed additives that are used more and more in diet formulation, with the aim of enhancing fat emulsification in the small intestine. Together with natural emulsifiers (e.g. bile salts), nutritional emulsifiers emulsify the fat globules coming from dietary fat in smaller droplets. Lipase, the digestive enzyme catalysing the hydrolysis of lipids, is therefore able to digest the fat in a more efficient way. Nutritional emulsifiers are also able to emulsify free fatty acids, in order to enhance their absorption in the epithelial cell layer. As nutritional emulsifiers are tightly related to energy efficiency, these feed additives are able to liberate more energy from the diet for animals’ performance. Therefore, nutritional emulsifiers can also be called animal productivity enhancers. Excential Energy Plus is a nutritional emulsifier developed by Orffa Additives B.V. and is based on glyceryl polyethylene glycol ricinolate (GPGR). This GPGR, coming from castor bean oil, is specifically synthesised in a controlled production process to increase its emulsification properties in the watery conditions of the small intestine. The efficiency of Excential Energy Plus has been proven in more than 100 in vivo trials among different monogastric and ruminant animal species. However, the action of a nutritional emulsifier depends on several factors including, but not limited to; animal species, dosage, emulsifier active ingredient(s), period of supplementation and feed formulation. Orffa conducted a global meta-analysis on the effect of Excential Energy Plus as a broiler productivity enhancer and feed cost saver, taking into account these different factors. Three different meta-analysis were implemented; the first to compare the effects of Excential Energy Plus to a control diet without a nutritional emulsifier, and a second meta-analysis to compare the product to a diet with a different commercially available emulsifier. The third one studied the inclusion of the nutritional emulsifier in an energy-reduced diet as a feed cost saver. META-ANALYSIS AS PRODUCTIVITY ENHANCER: EXCENTIAL ENERGY PLUS VS CONTROL A systematic review of scientific and commercial trials with Excential Energy Plus has been carried DUAL BENEFIT OF EMULSIFIERS: PERFORMANCE ENHANCER & COST SAVER Aurélie Montagnon Central Technical Manager Orffa Additives BV
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