فهرس المقالات Dry season

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  1 - Investigating of the amount and direction of Mehran plain Groundwater drop in GIS
  علی عباسی نیا جعفر مرشدی منیژه ظهوریان جبرائیل قربانیان
  Due to the importance of climatic parameters, especially rainfall and its effect on water resources, in this study meteorological drought and its effect on groundwater source in Mehran plain and its seasonal and annual fluctuations over a period of 23 years (1995-2017) أکثر

  Due to the importance of climatic parameters, especially rainfall and its effect on water resources, in this study meteorological drought and its effect on groundwater source in Mehran plain and its seasonal and annual fluctuations over a period of 23 years (1995-2017) was invistigated. At the first, after collecting data and information from sampling wells, exploitation wells and exploration wells and preparing the geological map of the region, level maps and changes in the alluvial aquifer of Mehran in the information system environment was drawn geographically. In order to investigate the fluctuations of the groundwater level of the aquifer, a hydrograph of the period unit was drawn. Standard precipitation values ​​in Mehran rain gauge station and plain groundwater index were obtained in multiple time scales The results showed that the rate of groundwater level drop in this 23-year period was about 1.99 meters. The highest rate of decline was observed in 2007-2008 and 2011-2012 at the rate of 0.65 per year, the main reason for which was the groundwater abstraction with a sharp decrease in rainfall and drought. As a result, groundwater quality has changed. The results of this study showed that the decrease in groundwater level has changed its direction in Mehran plain. This change of direction is evident over time for three consecutive decades. For example, in the 70s and 80s, it was north-south; Fog has shifted north-southwest in recent years, although this change is minor in some years, but over time these changes due to groundwater decline are significant تفاصيل المقالة
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  2 - Estimation of Optimum Utilization of Ruminant Feed Resources on Tropical Dry-Land during Dry and Rainy Seasons
  E. Handayanta I. Subagiyo H. Hartutik K. Kusmartono F.A. Steenstra S.J. Oosting
  This study aimed to estimate the optimum utilization of ruminant feed resources in tropical dry-land during dry and rainy seasons. Data concerning feed availability and quality were collected from Gunungkidul Regency of Indonesia over two seasons: the dry and rainy seas أکثر

  This study aimed to estimate the optimum utilization of ruminant feed resources in tropical dry-land during dry and rainy seasons. Data concerning feed availability and quality were collected from Gunungkidul Regency of Indonesia over two seasons: the dry and rainy seasons. The JAVA program, the model, was used to estimate the availability of feed for ruminants associated with mean live weight gain (MLWG) and total live weight production (TLWP). The results showed that the maximum production in the dry season was obtained when 18% dry matter (DM) was used (MLWG 0.33 kg/animal unit (AU)/day, herd size (HS) 197 AU, and TLWP 11.94 tons/season), or in the rainy season, when 46% DM was used (MLWG 0.18 kg/AU/day, HS 1116 AU, and TLWP 37.22 tons/season). Furthermore, when only 100% was used, it could feed a maximum of 1500 AU and 2968 AU in the dry and rainy seasons, respectively. Without the transfer of feed from one season to another, a constant number, 350 AU, was obtained for HS, with a maximum TLWP of 19.16 tons/year. On the other hand, when the feed was kept constant at 34% dry matter (DM), a maximum TLWP obtained was 32.32 tons/year which is enough 420 and 820 animal units in the dry and rainy season, respectively. It was concluded that to obtain maximum TLWP in each season, only 14.5% to 46% of available DM feed should be used, as most of the available feed was of very low quality. تفاصيل المقالة
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  3 - Cassava Bran– Fish Processing Waste as Dry Season Feed Resources for Sheep in Nigeria Southern Guinea Savannah
  Akeem Sikiru Mahmoud Yousuf Sadiq Ademola
  Seasonal variability impact on livestock production and management stems from poor pasture quality and quantity as well as shortage of water. During wet season, there is usually sufficient quantity of pasture in good quality for animal consumption; but during dry season أکثر

  Seasonal variability impact on livestock production and management stems from poor pasture quality and quantity as well as shortage of water. During wet season, there is usually sufficient quantity of pasture in good quality for animal consumption; but during dry season, there is always insufficient pasture as well as shortage of water for livestock consumption. As a result of these, exploration of resilience livestock production and management practices capable of enhancing animal performance during dry season becomes highly necessary. Based on the above background, a 12 weeks trial was carried out during January, February and March in 2015 to determine the effects of cassava bran plus fish processing waste supplement on body weight gain, blood composition and meat quality of West African Dwarf sheep at a location within Nigeria Southern Guinea Savannah. Twelve growing lambs were randomly allotted to three Treatments; each fed dried cassava peel ad-libitum in addition to 0%, 1.5%, or 2.5% body weight equivalent quantity of the cassava bran-fish processing waste supplement throughout the feeding trial. Sheep fed control (0%) diet had negative body weight change (P<0.05). Sheep fed cassava bran-fish processing waste supplement at 2.5% body weight level had higher (P<0.05) body weight, nutrient composition and carcass yield. Treatment effects on sheep organoleptic properties and meat fatty-acids composition were significant (P<0.05). Our study established that cassava bran and fish processing waste are potential dry season feed resources suitable for growing lambs since it has no negative impact on the health of the animals and it promote growth and performance of the animals. We recommend further studies into full integration and improvement of diets prepare from cassava bran and fish processing waste for sheep feeding during dry season; also investigation into possibilities of incorporating fish processing waste into production of silage for growing lambs. تفاصيل المقالة