Assessment of the nutritional value of Gundelia tournefortii during its growth stages as a key element in the Senowbar r
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ORIGINAL PAPER
Assessment of the nutritional value of Gundelia tournefortii during its growth stages as a key element in the Senowbar rangeland ecosystem, Northeast of Iran M. Esbati1 · J. Farzadmehr1 · A. Foroughi2 · M. R. Rahdari1 · J. Rodrigo‑Comino3,4 Received: 28 March 2020 / Revised: 19 June 2020 / Accepted: 24 August 2020 © Islamic Azad University (IAU) 2020
Abstract To achieve sustainability and land degradation neutrality in rangeland ecosystems, understanding the growth stages of key plants to develop land management and conservation plans is vital. This study was conducted to determine the nutritional value of Gundelia tournefortii and its changes during different growth stages as one of the most dominant rangeland plants in Khorasan Razavi province, NE of Iran. The plants were randomly sampled in three stages of growth (vegetative, flowering and seeding) in the Senowbar rangeland and eventually moved to the laboratory for chemical analysis. Results showed that crude fiber and acid-detergent fiber and neutral-detergent fiber increased and dry matter, crude protein, ether extract decreased. Ash, Ca, P, K and Na decreased during plant matured; furthermore, these changes were statistically significant (Duncan’s test, 99% and 95%). Dry matter intake, digestible dry matter and relative feed value decreased during growth, which was statistically significant (p
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