Document Type : Research Paper

Authors

Department of Forest, Range and Watershed Management, Faculty of Agriculture and Natural Resources, Yasouj University, Yasouj, Iran.

10.22059/jrwm.2023.362441.1715

Abstract

In this research, the nutrient value of Zygophyllum eurypterum, Salsola orientalis, and Sanguisorba minor during different growing periods in the winter rangelands of Gachsaran County was considered. For this purpose, sampling was done randomly and with 4 repetitions from the species in different periods of growth. To determine the quality, crude protein percentage (CP), acid detergent insoluble fiber (ADF), dry matter digestibility (DMD) and metabolizable energy (ME) were evaluated. The results showed that the quality indices in the studied species have significant differences (p<0.05). The highest values of crude protein percentage, dry matter digestibility percentage and metabolic energy (MJ/kg) are 16.91, 60.88 and 8.35, respectively, was observed in S. minor and the lowest values of the indices 7.39, 49.05 and 6.33, respectively, were detected in S. orientalis. Also, the highest amount of ADF was obtained in S. orientalis (45.66%) and the lowest in S. minor (36.16%). The nutrient value of the plants in different growth periods has significant differences (p<0.05). In the growth period, the highest percentage of crude protein (20.87) belongs to the Z. eurypterum, the highest percentage of digestibility (65.92) and the amount of metabolic energy (9.2 Mj/kg) was belonged to the S. minor and the lowest percentage of crude protein (8.65), dry matter digestibility percentage (57.34), and metabolic energy (7.74 Mj/kg) was belonged to the S. orientalis. The highest (36.25%) and the lowest percentage of ADF (31.50%) at this stage belong to S. orientalis and S. minor. In the flowering period, the highest amount of crude protein percentage (17.50), dry matter digestibility percentage (62.50) and metabolic energy (8.62) belong to the S. minor.

Keywords

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