SYNLAC™ Probiotics for Poultry and Livestock comprises several patented probiotic strains, including Lactobacillus acidophilus LAP5 for diarrhea relief, Lactobacillus plantarum LP28 for immunomodulation, Enterococcus faecium EF08 for synergistic effects, and Bacillus subtilis, which secretes a variety of digestive enzymes. SYNLAC™ Probiotics are rich in metabolites, and colonization in the gut of livestock and poultry results in 10–20 times the typical amount of lactobacilli. Field tests have shown that SYNLAC™ Probiotics effectively modulate gut microbiota, produce antimicrobial substances such as lactic acid and bacteriocin, regulate immune responses, and suppress the growth of harmful bacteria such as Escherichia coli and Salmonella. Therefore, the use of SYNLAC™ Probiotics in animals helps to relieve diarrhea, enhances resistance to diseases, improves growth performance, and increases tolerance towards stresses such as heat stress.