Effect of winter closing date and spring opening date on the DM yield of perennial ryegrass cultivars

摘要：

Grazed grass is continually being proven to be the cheapest feed available ( Shalloo et al.,2004).Therefore, increasing its proportion in the diet is one of the key objectives of Irish dairy production.However,due to climatic variation grass growth in Ireland is extremely seasonal thus cultivars with improved winter growth,such as those presently used in New Zealand,would be extremely beneficial in any extended grazing system as they would allow sufficient herbage availability for early turnout to pasture of cows in spring.The objective of this study was to investigate the effect of winter closing date and spring opening date on the DM production of ten different cultivars.

关键词： winter growth cultivar closing date opening date DM production

作者: E.Kennedy M.O.Donovan M.McEvoy

作者单位: Teagasc,Dairy Production Research Centre,Moorepark,Fermoy,Co.Cork,Ireland

会议类型: 国际会议

会议名称: 2008世界草地与草原大会

会议地点: 呼和浩特

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）