放牧绵羊牧食习性的比较研究

本试验在短花针茅荒漠草原采用跟群放牧全日制观察法，研究了不同放牧强度和放牧制度下绵羊的牧食习性，结果表明，随着放牧强度的增大，绵羊的采集时间增加，反刍卧息时间减少，放牧强度相同时，划区轮牧绵羊的采食时间较季节连牧短，反刍卧息时间和游走时间增加，随着放牧强度的增加，绵羊采食量下降，放牧强度相同时，划区轮牧绵羊的采食量较季节连牧高。

The Comparison of Grazing Behavior of Sheep

The experiment was made on Stipa brevifora desert steppe with the whole day long eye observation method,following flock.The grazing behavior of sheep under different grazing intensities and systems have been estimated.The results show that the eating time of the sheep increases and the resting and idling time decreases as the grazing intensity becomes heavier.The eating time is shorter and the resting and idling time are loger in rotaional grazing system than that in continuous grazing system if the grazing intensity is the same.The voluntary intake of sheep declines as the grazing intensity increases,and the voluntary intake in the rorational grazing system is higher than that in the continuous grazing system when the grazing intensity is at the same level.;