Volume 13, Issue 3 (10-2019)                   مرتع 2019, 13(3): 368-375 | Back to browse issues page

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Department of Range Management, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Nour
Abstract:   (3775 Views)
Abstract 
In order to properly manage rangelands, knowledge of chemical compositions of pasture plants is essential. In this research, the effect of cold treatment, 4˚C, on crude protein (CP) and Acid Detergent Fiber (ADF) of Festuca arundinaceae and Dactylis glomerata at vegetative growth stage was investigated. Seeds of the species were cultivated in a pot. Ten replicates of each seedling’s species having 50 mm height, were transferred to the phytotron unit of the Faculty of Natural Resources, University of Tarbiat Modarres for two weeks, for cold treatment. The same number of seedlings were kept in the greenhouse as the control. After two weeks, the pots returned to normal greenhouse conditions. When the species reached the optimal growth, 500 mm, seven leaf samples of two species were transferred to the laboratory to measure the CP & ADF. Lter sanples were dried. The results showed that the crude protein of the species, under the influence of cold treatment, increased but the amount of Acid Detergent Fiber was reduced.The crude protein content of Festuca arundinaceae was 35.40% and 31.71% for the cold treatment and control respectively.For crude protein content of Dactylis glomerata in the cold treatment was 29.58% and in the control treatment was 28.10%,. The amount of Acid Detergent Fiber in this species was also reduced. The results of this study could be used for a better rangeland management program in terms of cold weather condition and grazing timing.                                                                                    
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Type of Study: Research | Subject: Special
Received: 2019/10/21 | Accepted: 2019/10/21 | Published: 2019/10/21

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