The Research Of The Seasonal Rest And Grazing Behavior Of Livestock Under The Different Grazing Intensities

In this paper, the effect of rest grazing on plant communities and soil as well as the different grazing intensity on the grazing behavior of Simmental cattle under different granzing intensity were researched in Xilinguole Stipa krylovii steppe from July to September,2011. The results were shown as follows:1. The grass coverage degree of recovery under different grazing intensities in seasonal grazing area was moderate> light> heavy grazing area; Community height in the processing zone after rest grazing were higher than the grazing area. Grass coverage degree of recovery in each month was as follow:pastoral>light>heavy grazing; Under different grazing intensity grazing biomass increased, increased amplitude in order of moderate> light> heavy pasturing area.2. The soil moisture content of the rest grazing area was higher than the grazing area. Soil moisture content in the rest grazing area decreased with the increasing grazing intensity. With an increase of grazing intensity organic matter content in three kinds of grazing treatments on the rest grazing areas in0-10cm and10-20cm soil layer increased, which in20-30cm has no regularity change. Total and available nitrogen content in three kinds of grazing plots of0-10cm,10-20cm and20-30cm were higher than rest grazing area, which reduced with the increase of soil depth. Soil total and available phosphorus content in0-10cm soil layer of the light grazing area was higher than that of grazing areas, between rest grazing area and grazing areas in10-20cm and20-30cm soil layer had no significant difference. Soil total and available potassium content in0-10cm,10-20cm soil layer of rest grazing area were significantly higher than that of grazing area, which in20-30cm soil layer did not differ.3. Effects of grazing intensity on Simmental cattle grazing behavior and rumination behavior wer apparent. The lower grazing intensity obviously reduced feeding time, extend rumination time. Standing time reduced with the increasing grazing intensity, whereas effects on resting, walking and excretion behavior were not obvious.