Is There Keratin in Chicken Meat or Feathers?
                                
                                
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                                    4 min read                                
                            
                                Approximately 90% of a chicken's feather dry mass is composed of a durable fibrous protein known as beta-keratin. The presence of keratin in chicken is often misunderstood, as it is found exclusively in specific structural components of the bird, not in the muscle meat consumed as food.