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SUPPLEMENTED DIETS
Significant cost savings obtained when broiler chickens are fed proteasesupplemented corn-soy based and low digestible protein diets
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by Manathaya Taelibhong, Glenmer B. Tactacan, Kabir Chowdhury, Supornchai Sri-Nhonghang, and Yuwares Ruangpanit Jefo I&D; Jefo Thai; and Kasetsart University he fluctuating cost and quality of major protein sources used in poultry feed are forcing feed manufacturers and integrators worldwide to use cheaper but poorly digestible raw materials such as meat and bone meal, rapeseed meal, sunflower meal, and distillers dried grain
solubles (DDGS). These alternative raw materials are usually poorly characterised, possess an imbalanced amino acid profile, and may contain some anti-nutrients limiting their use in animal feed. Due to their lower nutritional value (lower digestibility, higher anti-nutritional content), diets formulated with these alternative raw materials often lead to poor performance of the animals. Currently, various dietary strategies are being used to improve the quality of feed ingredients and alleviate their adverse effects on animal performance. These strategies include but not limited to phytogenic compounds, probiotics, organic acids, and enzymes. Enzymes are one of the most frequently used feed based solutions available today. Among the enzyme groups, phytase, carbohydrases, and proteases are used to improve mineral, energy, and protein digestibility of the feed. Among the commercial protease enzymes, most are genetically modified mono-component proteases that may or may not be protected to prevent degradation during the manufacturing process. Some of them are also in liquid form for post-pelleting applications. Some multi-enzymes containing proteases are also available and being widely used by the industry. In this study, effects of a multi-component protease (a protease complex – Jefo Nutrition Inc., Canada) derived from a non-GMO bacterial fermentation was assessed in broiler chicken in two different diets. One is a regular cornsoy based diet and the other is corn-soy-rapeseed mealmeat and bone meal based diet. The protease complex was used on both diets modified using the nutrient uplift associated with the protease.
56 | July 2017 - Milling and Grain