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Articles by Amir Reza Safaei
Total Records ( 3 ) for Amir Reza Safaei
  Afshar Mirzaei-Aghsaghali , Naser Maheri-sis , Ali Mirza-Aghazadeh , Amir Reza Safaei , Amir-Farhang Houshangi and Abolfazl Aghajanzadeh-Golshani
  The aim of the study was to determine the chemical composition and ruminal degradation characteristics of two alfalfa varieties including Kareyonge (KAR) and Hamedani (HAM) grown in West Azerbaijan in Iran, using in situ technique. The nutritional parameters were Dry Matter (DM), Organic Matter (OM) and Crude Protein (CP). Nylon bags filled with 5 g of each forage were suspended in the rumen of three cannulated Gezel rams immediately before feeding and incubated for 7 different times (0, 4, 8, 16, 24, 48 and 72 h). Parameters for degradation kinetics included readily degraded fraction, slowly degraded fraction, lag time and fractional rate of passage. No significant difference found between DM, CP, Ash and Ether Extract (EE) of two alfalfa varieties although the difference for Crude Fiber (CF), Neutral Detergent Fiber (NDF) and Acid Detergent Fiber (ADF) were significant (p<0.01).The degradability of DM, OM, CP and Effective Rumen Degradable Protein (ERDP) at a rate of 0.05/h for KAR and HAM varieties were 54.2, 52.16, 40.1%, 72.57 g kg-1 DM and 56.97, 54.9, 39.25%, 89.4 g kg-1 DM, respectively. Calculations based on in situ degradability indicate that HAM alfalfa can have a higher inclusion than KAR alfalfa in diets for ruminants because of lower NDF, greater cell contents and ERDP.
  Naser Maheri-Sis , Afshar Mirzaei-Aghsaghali , Ali Mirza-Aghazadeh and Amir Reza Safaei
  The aim of this experiment was to determine the potential nutritive value of Hamedani (HAM) and Kareyonge (KAR) using the chemical composition, Dry Matter Digestibility (DMD), Organic Matter Digestibility (OMD) and Metabolizable Energy (ME) content. Each of the two alfalfa varieties were offered ad libitum to three Gezel rams. No significant difference found between Dry Matter (DM), Crude Protein (CP), Ash and Ether Extract (EE) contents of two alfalfa varieties, although the difference for Crude Fiber (CF), Neutral Detergent Fiber (NDF) and Acid Detergent Fiber (ADF) were significant (p<0.001). Dry Matter Intake (DMI), Organic Matter Intake (OMI) and Crude Protein Intake (CPI) were similar in HAM and KAR hays (p>0.05). Dry Matter Digestibility (DMD) and organic matter digestibility in HAM hay were significantly (p<0.01) higher than that of KAR hay, whereas Crude Protein Digestibility (CPD) in HAM hay was similar than that KAR hay (p>0.05). Digestible Organic Matter in Dry Matter (DOMD) and ME intake in HAM were significantly (p<0.01) higher than that KAR hay. Calculations based on in vivo digestibility indicate that HAM alfalfa can have a higher inclusion than of KAR alfalfa in diets for ruminants because of lower cell wall (NDF and ADF) contents, greater DOMD and ME intake.
  Naser Maheri-Sis , Afshar Mirzaei-Aghsaghali , Amir Reza Safaei , Ali Mirza-Aghazadeh and Ghassem Habibi Bibalani
  The nutritive value of quackgrass (Agropyron repens L.) was evaluated at late maturity. Rumen mixed microbe inoculums were taken from two fistulated Gezel rams. Samples of quackgrass were incubated with rumen fluid to determine gas production. Gas production was measured at 2, 4, 6, 8, 12, 24, 48, 72 and 96 h. The results showed that the Crude Protein (CP), Neutral Detergent Fiber (NDF) and Acid Detergent Fiber (ADF) content of quackgrass hay were 8.9, 69.5 and 38.3%, respectively. Organic Matter Digestibility (OMD) and Metabolizable Energy (ME) content were 43.54% and 6.58 MJ kg1 DM, respectively. In conclusion, it seems that quackgrass could be used as an efficient ruminant feed.
 
 
 
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