Effects of soil-salt accumulation on sheep body weight in Mongolian grassland: evidence of excess salt in plant and wool samples

摘要

The aim of this study was to examine the effects of accumulated soil salt on livestock production in Mongolian grasslands. In saline and control areas, we compared soil salinity, sodium concentrations in plants and wool, and body weights of ewes. Mean soil salinity, sodium concentrations, and growth retardation were greater in the high-salinity area than in the control region. Increased retention of sodium in wool samples was evidence of excess dietary sodium. These results reflect sodium overflow from soil to sheep via plants, and this overflow can diminish livestock productivity in saline areas.