人工草地绵羊系统优化研究Ⅳ人工草地划区轮牧罗姆尼怀孕母羊群体采食量研究

Optimum study of sown pasture sheep systems Ⅳ Study of the effect of rotational grazing on pregnant Romney ewe intake

人工草地划区轮牧条件下 ,牧草生长旺季罗姆尼 (Romney)怀孕母羊羊群采食量与怀孕日龄间呈显著正相关 ,回归方程Y =0 .0 0 32X +0 .8537,r =0 .94 95;但霜冻到来后采食量与怀孕日龄间呈显著负相关 ,回归方程Y =- 0 .0 0 73X +1.784 1,r =- 0 .9851。

Using rotational grazing during the growing season, intake of Romney ewe increases with pregnancy term, equation Y=0.0032X=0.8537, r =0.9495; but decreases with pregnancy term as temperatures decline, equation Y=-0.0073X+1.7841, r =-0.9851.