Hosein Arzani; Somayeh Alikhani; Akbar Javadi; Bardia Nourian
Volume 16, Issue 4 , January 2010, , Pages 431-444
Abstract
Information about animal requirement, available forage and its quality is fundamental for successful range forage and livestock management. Since sheep is dominant grazing animal on rangelands in Iran and there are about 27 sheep breeds and each breed has special body size and physiological condition, ...
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Information about animal requirement, available forage and its quality is fundamental for successful range forage and livestock management. Since sheep is dominant grazing animal on rangelands in Iran and there are about 27 sheep breeds and each breed has special body size and physiological condition, different daily nutrition requirements need to be considered. It is necessary daily requirement of each breed based on quality of available forage be determined which was the main objective of this research for Moghani sheep breed in Kalibar rangelands in eastern Azerbaijan province of Iran. Vegetation composition was formed by 11 species including Hordeum glavum, Aegilops sylindrica, Artemisia fragrans, Agropyron trichophorum, Festuca ovina, Dactylis glomerata, Stipa barbata, Sinapis arvensis, Bromus tectorum, Bromus tomentellus and Kochia prostrata. Among them Hordeum glavum, Aegilops sylindrica, Artemisia fragrans, Stipa barbata, Sinapis arvensis, Bromus tomentellus, and Kochia prostrata were existed in lowland, and other species were observed in highlands. Samples were collected from an exclosure about 25-31 of May in flowering stage and 4-6 of July in maturity stage. Forage quality was evaluated based on chemical combination including crude protein (CP), acid detergent fiber (ADF), dry matter digestibility (DMD) and metabolizable energy (ME). For comparison of results One-Way Analysis of Variance (ANOVA) was used. Duncan test was used to determine inside changing sources and comparing species and location with pFestuca ovina and lowest forage quality was obtained in Hordeum glavum. Among two Phenological stages of (flowering & maturity) the higher percent of CP, DMD and rate of ME were obtained in flowering stage and the lowest percent were belonged to maturity stage. The higher percent of ADF was measured for maturity stage and the lowest Percent of ADF was obtained in flowering stage. Thus there were significant differences (p<0.01) between ADF, CP & ME of species. There were also significant differences between chemical components of species in different phenological stages and areas. Moghani sheep daily requirement based on MAFF equation considering forage quality and physical condition of the areas in two phonological stages and maintenance condition with 40% additional requirement were 1.39 kg DM and 2.14 kg DM in flowering and maturity plant growth stages respectively. Generally considering average metabolizable energy of species daily animal requirement in highland and lowland were 1.53 and 1.95 kg DM respectively.
Akbar Javadi; Hosein Arzani; Ali Salajeghe; Mahdi Farahpor; GHavam ... Zahedi
Volume 14, Issue 4 , February 2008, , Pages 513-523
Abstract
Proper use from water resources, especially in arid and semi arid rangeland are very important. Water is one of a valuable ecosystem component in rangeland management. In this study for surveying of water suitability, tree models including quality model, quantity and distance model made final model. ...
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Proper use from water resources, especially in arid and semi arid rangeland are very important. Water is one of a valuable ecosystem component in rangeland management. In this study for surveying of water suitability, tree models including quality model, quantity and distance model made final model. FAO (1991) method (recommended for land capability evaluation) was used for suitability classification. The study was conducted in Halvan region is located in Yazd province. According to the results, water resources distance and accessibility to water is the most declining factor for suitability. Quality factor is a limiting factor in part of the study area, too. Based up on, areas more than 15km far from water point are not suitable, but less than 6km are very suitable. Proper distribution of water resources increases water suitability and cause better and monotonous utilization of rageland.