Effect of Different Grazing Systems on Nutrition of Artificial Pasture and Sheep Weight

This experiment was carried out in the artificial pasture on grassland demonstration pastoral area of Grassland Research Institute of Chinese Academy of Agricultural Sciences during June to September in 2010.The experiment was designed as rotational grazing group and continuous grazing group,there were three treatments in both rotational grazing group and continuous grazing group,there were 5 rotational grazing areas in every rotational grazing treatment,rotational grazing period was 30 days.The results showed that the effect of different grazing system on pasture dry matter yield was not significant;and that the effect of different grazing system on the nutrition of forage grass was significant(P0.05).The crude protein content of the forage grass in rotational grazing group was higher than that in continuous grazing group,while the NDF content in rotational grazing group was lower than that in continuous grazing group.There were no significant differences in weight gain of sheep between rotational grazing group and continuous grazing group.