摘要
在较低放牧率（１．３３羊／ｈｍ２·１３８ｄ）和限牧时间条件下，不同放牧时期对绵羊牧食行为的影响有：（１）当放牧时间缩短时，绵羊通过缩短反刍行为的时间而保持采食时间的相对稳定，并通过调整各采食参数（采食速度、采食口数等）以保持进食速率和日采食量的相对稳定，对饮水行为影响不大；（２）９月份反刍周期数和总反刍食团数最少，反刍时间最短；６月份每个食团咀嚼次数最少，咀嚼时间最短；（３）７月份排尿次数最多，每次排尿时间最长；９月份居中；６月份最少。排粪行为差异不显著；（４）绵羊的保养行为相对稳定，但站立与卧息行为时间呈反比。６月份游走次数最多，但每次游走时间最短；７月份正好与６月份相反；９月份居中。
Grazing behaviour of sheep (wethers) was studied at the Inner Mongolia Grassland Ecosystem Research Station in 1993. It was shown that, at a relatively low stocking rate of 1.33 sheep per hectare, sheep responded to a shortened grazing time by decreasing ruminating time to maintain the time length needed for foraging. At the same time, a relatively constant amount of daily intake was also maintained by sheep through adjusted grazing speed and intake rate. No significant effect of shortened grazing time on drinking behaviour was observed. Other aspects of study, including ruminating, urine and feces excretion, time intervals of standing, walking and lying during grazing.
出处
《草业学报》
CSCD
1997年第2期7-13,共7页
Acta Prataculturae Sinica
基金
国家自然科学基金重大基金项目
内蒙古草原生态系统定位研究站开放站基金
关键词
放牧时期
绵羊
牧食行为
Grazing time, sheep, wether, grazing behaviour
