不同精粗比水平下华北驼绒藜饲用评价

The Feeding Value of Ceratoides arborescens in Different Concentrate to Roughage Ratio

华北驼绒藜是一种数量可观、广泛分布于我国荒漠草原区的饲草资源,但目前人们对其饲用价值的认识还停留在传统水平,为了充分了解和更好地利用华北驼绒藜这一自然资源,缓解冬春季及"白黑灾害"造成的饲草不足问题,更好地为荒漠草原区探索出高效养羊的新路子,开展了华北驼绒藜饲用评价试验。将华北驼绒藜、谷草、苜蓿铡短、粉碎后,再与50%、30%、20%的精料混合制成颗粒日粮,饲喂绵羊,通过比较不同处理组绵羊的增重情况,结合经济效益分析,评价不同精粗比水平下华北驼绒藜的养羊效益。试验表明,华北驼绒藜和谷草在30%精料水平下,具有与相同精料水平下用苜蓿饲喂绵羊同等的增重效果,并可增加纯收入高于80元/只;华北驼绒藜在精粗比为3∶7的条件下有较好的养羊经济效益。

Ceratoides arborescens is a forage resource with considerable amount and vast distribution, but the understanding of its feeding value had rest on a traditional standard. The feeding value of Ceratoides arborescens is developed in order to fully understand and utilize Ceratoides arborescens, relieve the problem of forage lacking during winter and spring time or clue to white and black disaster, and explore a new way of effective sheep raising in desert steppe. The experiment was conducted to feed sheep on particle diet combined ground Ceratoides arborescens ,alfalfa and millet straw with concentrate in different ratio. Then the weight gainsof sheep were analyzed comparatively. The results showed that, in the level of 30% concentrated feed, the Ceratoides arborescens and millet straw roughage mix had the same weight gain effect as alfalfa,and could increase net income by 80 RMB per sheep;concentrate to roughage ratio at 3：7 with Ceratoides arborescens used has better economic output.