بررسی ارزش غذایی تاغ و عمل آوری آن با سود و آهک در مراحل مختلف رشدبا استفاده از روش کیسه های نایلونی

abstract this study is carried out to determine the chemical composition in the three vegetative stages of the haloxylon sp., degradation parameters, with adding naoh and ca(oh2 ). for this purpose, in may and october and january 2010 enough some haloxylon sp. of the ammary area was prepared. crude protein and ash percentage are decrease, neutral detergent fiber percentage with pragress stage of growth is increased. metals measurement such as phosphorus and potassium to vegetative advanced are decreased and calcium and sodium are increased. iron rate to vegetative progress are lowely increased. seeding stage samples were processed with naoh and cao2 (%4) by 4 repeat for three days in plastic bags. degradation processing sampeles than no processing samples observated crude protein and ash rate are increase and neutral detergent fiber rate is decreased. the dry matter degradation parameters in processing were not affected. protien degradation (a) coefficient in processing samples to ca(oh2 ). than no processing and processing sampeles to naoh is significantly increased, (b) parameter prossing sample to naoh than to rest samples is significantly increased. passage rate fixed were not affected in different times. a and b neutral detergent fiber processing samples significant different was observed between sampels(p< 05/0). the highest (a) degradation parameters rate for not processing and increasing (b) degradation parameters rate was cao2 processing. c coefficient not processing sampel than cao2 and naoh processing samples is significantly observated. affective degradation parameters in between are differently observated. the highest affective degradation coefficient rate is for cao2 processing sampel. key words: haloxylon sp., processing, degradability.