Pig farming faces challenges in terms of productivity and health due to the stressors that affect piglets after weaning. Antibiotics are commonly used to reduce losses caused by these factors, but their indiscriminate use has led to resistance of microorganisms to antibiotics. Therefore, finding an alternative to antibiotics that guarantees animal welfare, production sustainability and economic viability is a challenge, especially in the weaning phase. To address this question, a study will be conducted at the University of Illinois at Urbana Champaign. The study aims to analyze the behavior, performance and characterization of the effluents generated by piglets submitted to three different diets: one with antibiotics, one with a nutritional additive and a harmful control diet. The study will also consider different ambient temperature conditions to resemble the production system of a conventional farm. This study seeks to understand how bioclimatic conditions affect the nutrient absorption systems of pigs, evaluate the effectiveness of alternative nutritional additives in combating infectious agents and evaluate the biodegradability of these additives compared to antibiotics. In addition, the study aims to determine whether the removal of these additives from effluent units, soil and water treatment processes is facilitated. The results indicate that the alternative use of nutritional additives, specifically organic acids, positively influences the performance, ambience and characterization of the effluent of suckling piglets challenged during the study.