[The effect of feeding rumen contents on glutamate dehydrogenase activity in some organs of broilers]

The effect of the replacement of 50, 60 and 80% of proteins in diet by dried rumen contents on glutamate dehydrogeanse activity (EC 1.4.1.3) in the kidneys, liver, and caecum tissue and contents was studied in broilers. The liver and caecum tissue did not show any significant changes in the activity of glutamate dehydrogenase (GLDH) in dependence on the concentration of rumen contents in the diet. A statistically significant drop of GLDH activity was ascertained in the kidneys, the drop being the most marked at a 65% concentration of rumen contents in the diet. Similarly, a statistically significant decrease of GLDH activity, caused by rumen contents feeding in comparison with the control, was observed in caecum contents, in which the activity of GLDH was the highest.