灌丛草地放牧山羊的牧草适口性与嗜食性及山羊采食率研究

通过对放牧山羊的牧草适口性，嗜食性和采食率及其相互关系的分析，表明山羊放牧对灌丛草地的植物适口性、嗜食性比率和采食率均以灌木嫩枝叶，中禾草和苔草属植物较优。季节性规律为：春季山羊喜哺食灌木嫩枝叶，灌木嗜食性比率较高，采食率也较高，夏季山羊喜草本植物，草本植物的嗜食性比率高于灌木，秋季山羊较喜啃食灌木枝叶，嗜食性比率灌木高于草本植物，采食率低于春季，灌木采食率高于草本植物。

STUDIES ON PALATABILITY AND PREFERENCE RANKING AS WELL AS RATE OFFEED UPTAKE IN SHRUB GRASSLAND GRAZING GOATS

The paper analysed the palatability of herbage and preference ranking of goals and rate of feed uptakeas well as their relationships. The results showed that all the former saided indexes of goats grazing to shrubgrasslands the twigs and leaflets of shrub mid-grass and Garer L. were the better. The seasonal rule wasthat goats liked to eat twigs and leaflets of shrub in spring, rate of preference ranking was higher , rate offeed uptake was higher, too; in summer goats loved to eat herb ,the rate of preference ranking of herb washigher than shrub ;in autumn goats liked eating leaves and branches of shrub,lhe rate of preference rankingshrub was higher than herb,rate of feed uptake was lower than in spring and shrub was higher than herb.