不同放牧方式对草地和绵羊生产性能的影响

EFFECTS OF DIFFERENT GRAZING SYSTEMS ON PASTURE AND EWE PRODUCTIVITIES

1988年在南山牧场混播草地上进行的不同放牧方式(分区轮牧和连续放牧)对草地和绵羊生产性能影响的试验表明,在每只羊2亩草地的情况下,不同放牧方式对绵羊增重、繁殖、牧草干物质产量的影响差异不显著(P>0.05)。同一放牧时期放牧方式不同,牧草营养成分含量有较大差异。分区轮牧牧草粗蛋白质含量高于同期连续放牧草地,而粗纤维含量低于连续放牧草地。分区轮牧有利于人工栽培牧草分蘖,对野生杂草有控制作用。

This study was dealt with effects of grazing systems (continuous grazing and rotational grazing) an pasture and ewe productivities at mixture pasture. The results show as follows: Two grazing systems were not affected lives weight, reproductive efficiency and total yield of forage grass (P> 0. 05). However, the tiller density of the grasses and the nutrient contents were affected. The content of crude protein in rotational grazing pasture was higher and the crude fibre was lower than continuous grazing pasture. Rotational grazing is favourable to tiller number of planted grasses and controling the wild grass tiller.