Volume 12, Issue 1 (5-2018)
مرتع 2018, 12(1): 24-34 |
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Khorasaninejad Z, Ajorlo M, Pahlevanroy A, Yousofelahi M. Comparing forage quality of three grass species at different phenological stages in summer rangelands of Aslomeh Kalat Chenar, Dargaz City. مرتع 2018; 12 (1) :24-34
URL: http://rangelandsrm.ir/article-1-556-en.html
URL: http://rangelandsrm.ir/article-1-556-en.html
Abstract: (5411 Views)
Nutrition value of range plant species varies at different time and places. Knowledge on the variation of range plants forage quality assists range managers to adjust grazing time. This study aimed to investigate forage quality of Agropyron elongatum, Hordeum glaucum and Avena fatua at vegetative, flowering and seed setting growth stages in summer rangelands of Dargaz, northeastern Iran. Five individuals of each plant species were collected to provide a composite sample. Thirty composite samples of the species were collected in each phenological stage. The dry matter (DM), crude protein (CP), ash, organic matter, acid detergent fiber (ADF), dry matter digestibility (DMD), digestible energy (DE) and metabolizable energy (ME) of the samples were measured using standard methods. One-way ANOVA and GLM procedure (Repeated Measures) were used to analyze the data. Forage quality of all species was affected significantly by phenological stage (P < 0.05). All three species had high and low quality in vegetative growth and seed setting stages respectively. H. glaucum had more CP (19.1%), DMD (69.30%), DE (68.82%) and ME (9.78%) compared to A. elongatum and A. fatua. Considering the quality variation of the species, the end of vegetative growth and the start of flowering stages (early May) were recognized as the best time for animal grazing in summer rangeland of Aslomeh Kalat Chenar, Dargaz City.
Keywords: Forage quality, Phenology, Agropyron elongatum, Hordeum glaucum, Avena fatua, Summer range
Type of Study: Research |
Subject:
Special
Received: 2018/04/27 | Accepted: 2018/04/27 | Published: 2018/04/27
Received: 2018/04/27 | Accepted: 2018/04/27 | Published: 2018/04/27
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