In a study published in the Journal of Environmental & Analytical Toxicology, Dr. Kruger and researchers found that dairy cattle are affected adversely by glyphosate. Specifically:
"All cows investigated at the eight Danish dairy farms excreted glyphosate in their urine at significant different amounts between the farms. We found increased blood serum levels of parameters indicative for cytotoxicity like GLDH, GOT, and CK and the lipid profile marker cholesterol in cows at all farms and high urea levels in half of the farm animals. Correlations between glyphosate and some of the measured blood serum parameters to CK (R= 0.135), Se (R=-0.188), Co (R= -0,403) and Zn (R=0,175) demonstrate that glyphosate is toxic to the normal metabolism of dairy cows. This study gives the first documentation to which extent Danish dairy cattle are exposed to glyphosate and its impact on different blood parameters."