Energy cost of the activities of grazing cows, effect of plot size

摘要：

The energy expenditure and energy cost of activities of grazing beef cows were determined (by using the heart-rate method and GPS collars with motion sensors) on different size plots on Mediterranean foothill herbaceous rangeland, in three seasons. In winter plot size had no effect on the time spent on each activity or on the energy cost of these activities. In the summer, however, when the herbage was dry, cows on large plots grazed longer and expended more energy on grazing activity. It is suggested that on larger plots cows could select herbage of better quality than when grazing smaller plots.

关键词： grazing cattle activity energy cost Global Positioning System heart rate plot size

作者: A.Brosh Z.Henkin E.D.Ungar A.Dolev A.Orlov Y.Yehuda A.Shabtay Y.Aharoni

作者单位: Beef Cattle Section, ARO, Newe Yaar Center, Israel Department of Natural Resources, ARO, Israel MIGAL - Technological Center Israel, Newe-Yaar Research Center P.O.Box 1021, Ramat Yishay, 30-095,

会议类型: 国际会议

会议名称: The 7tb International Symposium on the Nutrition of Herbivores(ISNH-7)(第七届国际草食动物营养研讨会)

会议地点: 北京

会议语种:英文

页码: 784-789

在线出版日期: 2007-09-16（万方平台首次上网日期，不代表论文的发表时间）