Comparing nutritional values of the three rangeland species; Hordeum bulbosum, Trifolium repens and Prangos ferulacea in different phenological stages in the rangelands of Bagh Shadi, Yazd province

Determination of forage quality is one of the fundamental factors for the proper management of rangelands. In order to study the effect of phonological stages on forage quality, three species of rangeland in Yazd province including Hordeum bulbosum, Trifolium repens, and Prangos ferulacea were selected. Samples were collected in three phonological stages: vegetative growth, flowering and seed production. Plant samples were analyzed in the laboratory to determine crude protein percentage, acid detergent fiber, dry matter digestibility and metabolism energy. Data were analyzed using ANOVA and Duncan test. The results showed that the effect of phonological stages on forage quality were significant (P