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Effect of Betulin-containing Extract from Birch Tree Bark on α-Amylase Activity In vitro and on Weight Gain of Broiler Chickens In vivo

NutritionIn Vitro FermentationAnimal NutritionBirch Tree BarkFeed EvaluationBroiler ChickensBetulin-containing ExtractPoultry FarmingExperimental NutritionPoultry Science