(This summary has been generated by AI. Generate your own summaries: https://www.welcome.alviss.ai/alboard/#/editorial) Objective the aim of the study was to determine the effect of various proportions of lysine, arginine, and methionine in diets for turkeys, with low and high lys levels that are close to the recommendations of breeding companies on selected indicators of potential neurodegenerative effects in the brain and liver of turkeys. Method the experiment 1 and experiment 2 was conducted using 864 day old turkey chicks randomly assigned to six groups, in eight replicates. Animals, vol.12, pages 1535: assessment of neurodegensive changes in turkeys fed diets with different proportions of arginines relative to lysines. Result it was established that in the case of both a low and a high level of liver lys ( LYS ), the arginin level can be reduced to 90% of the lys level and met to 30% of that level, because this does not cause neurodegenesis. Conclusion it was concluded that the use of optimal levels and proportions of arg and met relative to a low or high concentration of a low lys in the diets for meat turkeys would reduce the occurrence of metabolic disturbances in the nervous tissue that can lead to neurogenetic changes. Electronic supplementary materialthe online version of this article is available to authorized users ( doi:10.1007/s13555 - 006 - 007 - 008 - 2 ).