Investigation on effects of phenological stages and species on forage quality of rangelands(Iran)

摘要：

Forages are mainly used by livestock as a source of nutrition ; forage quality is defined as an expression of the characteristics that affect consumption, nutritive value, and the resulting animal performance.Many factors influence forage quality.The most important are forage species, and, stage of maturity at harvest.Secondary factors include soil fertility and fertilization, temperatures during forage growth, and variety.Among several factors, determinations of crude protein, digestible dry matter and metabolizable energy were considered more appropriate for evaluation range forage quality ( Minson, 1987; Garza and Fulbright,1988; Rhodes and Sharrow,1990).

关键词： forage quality phenological stages crude protein ADF dry matter digestible metabolizable energy

作者: Marzieh Mosayyebi H.Arzani M.Maleki

作者单位: member of scientific board of Islamic A zad University A rdabil Branch Natural resources,Tehran University member of scientific board of Islamic A zad University Khalkhal Branch

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）