Have you gone though the context of those credible references.
First reference, dated 1972, is from Nigeria where "Cow's urine" concoction (CUPR) is a traditional remedy for convulsive seizures. They examined the preparation and administration of "cow's urine concoction" and the signs and symptoms of cow's urine poisoning due to the process.
Second reference, dated 2003, is from Andmaan and Nokobars Islands to assess the leptospiral carrier state and seroprevalence among animal population. The seroprevalence was highest among cows (40·32%). Of 85 rat (Rattus rattus) samples tested for antileptospiral antibodies six (7·1%) were positive. Leptospires were isolated from kidney of two rats and urine of one cow. Isolate from urine of cow was heavily contaminated and was subsequently lost during further subculture.
Both researched were done to check the contamination in the Urine but not the Urine.
I wonder even you go through the links before posting it here.
There are so many poor fellows who just read the punch lines and start shouting from their rooftop.