Animal Nutrition: reducing feed costs with lysolecithins
Feed ingredient prices have presented the entire feed industry with a huge challenge. Emulsifiers based on lysolecithins can reduce feed costs through more efficient nutrient digestion.
In animal feeds there are high inclusion rates of fats and oils, which are used to ensure rapid growth that matches the animals’ genetic potential. In poultry and swine species, young animals are known to produce insufficient levels of bile salts and pancreatic lipase and therefore cannot optimally digest and utilise these feeds. These highly concentrated feeds are costly, especially with current rising ingredient prices. Adding an emulsifier to animal feed could result in higher nutrient availability and utilisation.
Is it possible to reduce dietary energy and amino acid levels to save on feed costs, while maintaining animal performance? To evaluate this, four different emulsifiers were added to a broiler diet, while reducing the energy and amino acid content by three percent (negative control). The emulsifiers tested were either based on lysolecithins, two combinations of lower lysolecithin levels with a synthetic emulsifier and a synthetic emulsifier alone.
Reducing the energy and amino acid content (both by three percent) without the addition of an emulsifier resulted in significantly lower broiler performance compared to the positive control group (with normal energy and amino acid levels). The beneficial effects of adding an emulsifier at 500 g/ton on top of the negative control diet were clear throughout the trial period. All emulsifiers improved broiler performance compared to the negative control, with the emulsifier based on lysolecithins obtaining the biggest improvements on growth performance, which was similar to the positive control. Moreover, all emulsifiers obtained a feed conversion ratio (FCR) comparable with that of the positive control group. However, unlike FRA LeciMax, none of the other emulsifiers achieved growth performance equivalent to the positive control group, indicating that only this emulsifier was able to compensate for the reduction of energy and amino acid content.
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