The phrase "tract problems" refers to difficulties or issues relating to the digestive system, specifically the long tube-like structures in the body, such as the gastrointestinal tract. Full definition
Rabbit hay with low calcium content may reduce the risk of urinary tract problems in small pets. (petco.com)
Give a dose 5 to 30 minutes before meals for sore throat, and before or with meals for digestive tract problems, such as inflammatory bowel disease, until symptoms resolve. (littlebigcat.com)
Rabbit hay with low calcium levels may decrease the likelihood of urinary tract problems in your pet. (petco.com)