The effects of reduced protein diet supplemented with arginine plus glutamine–glutamate on growth performance, diarrhea incidence, blood metabolites, nutrient digestibility, and nitrogen utilization in nursery pigs

Collectively, results indicate that reducing CP from 22.5 to 18.0% compromises growth and nutrient digestibility, even when supplemented with arginine and glutamine-glutamate, but lowers diarrhea incidence and N output. These findings highlight trade-offs between growth efficiency, gut health, and environmental sustainability in nursery pig nutrition.