My name is Professor Marek Pieszka. I work at the National Research Institute of Animal Production in Kraków, Poland. Below I present my main research topics. My main research topics: 1. Protecting the digestive tract of piglets against the negative impact of pathogenic bacteria; 2. The use of non-antibiotic growth promoters in pig feed to reduce the effects of bacterial infections in pigs; 3. Gut microbiome and host response; 4. Nutrient digestion and absorption; 5. Manipulation of digestion.