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Articles by Afshar Mirzaei-Aghsaghali
Total Records ( 4 ) for Afshar Mirzaei-Aghsaghali
  Afshar Mirzaei-Aghsaghali , Naser Maheri-Sis , Ali Mirza-Aghazadeh , Yahya Ebrahimnezhad , Mohammad Reza Dastouri and Abolfazl Aghajanzadeh Golshani
  This study was conducted to compare methane production in legume (two common Iranian alfalfa varieties) and grass (quackgrass; QCK) as forage sources in sheep nutrition by using nutrient composition of the diet. Each of the 2 hays of legume (Hamedani; HAM and Kareyonge; KAR varieties) and grass (QCK) were offered ad libitum to three Gezel rams. No significant difference found between Dry Matter (DM), Crude Protein (CP), Ash and Ether Extract (EE) of 2 alfalfa varieties, although the difference for Crude Fiber (CF) was significant (p<0.01). The Organic Matter (OM), DM, CP, CF, Ash contents of 2 species (legume and grass) were significantly different (p<0.05). Methane production (g per day, g per kg BW and g per kg BW0.75) were similar in HAM and KAR hays (p>0.05), whereas methane production (g per day, g per kg BW and g per kg BW0.75) in grass hay were significantly (p<0.01) higher than that of legume hay. Calculations based on nutrient composition of the diet indicate that grass hay can have a higher methane production than legume resulting to gross energy lost as CH4.
  Ali Mirza-Aghazadeh , Afshar Mirzaei-Aghsaghali , Naser Maheri-Sis , Abolfazl Asadi-Dizaji and Abdulahad Shaddel
  The aim of the present study was to estimate the Microbial N yield (MN), Efficiency of Microbial Protein Supply (EMNS), amounts of Purine absorbed (Pa) and Purine Derivatives excretion (PDe) in gezel sheep fed Hamedani (HAM) and Kareyonge (KAR) hays. Digestible Organic Matter fermented in the Rumen (DOMR) of KAR (0.473 kg d 1) was lower than that of HAM hay (0.713 kg d 1). The MN was higher for HAM (22.8 g d 1) hay, than that of KAR hay (15.1 g d 1); but EMNS was similar (32 g N kg 1 DOMR). The Pa and PDe contents of HAM hay were higher than that of KAR hay (31.6 vs. 20.8 and 28.5 vs. 19.5 mmol d 1, respectively). In conclusion,it seems that, HAM hay can have a higher inclusion than of KAR hay in diets for sheep because of greater MN and PDe.
  Naser Maheri-Sis , Amir Reza Safaei , Afshar Mirzaei-Aghsaghali , Ali Mirza-Aghazadeh and Mohammad Reza Dastoori
  The objective of this study, was to assess the nutritive value of two forage species include Alfalfa (ALF) and Quackgrass (QCK) grown in Iran by using the chemical composition, in vitro gas production kinetics, Organic Matter Digestibility (OMD) and Metabolisable Energy (ME) contents. Rrumen mixed microbe inoculums were taken from two fistulated Gezel rams. Samples of forages were incubated with rumen fluid to determine gas production. Gas productions were measured at 2, 4, 6, 8, 12, 24, 48, 72 and 96 h. No significant differences were found between Organic Matter (OM), Ether Extract (EE), ash and Acid Detergent fiber (ADL) contents of experimental forages, although the differences for Dry Matter (DM), Crude Protein (CP), Crude Fiber (CF), Neutral Detergent Fiber (NDF), ADF and Gross Energy (GE) were significant (p<0.01). Gas production at all incubation times and gas production constants (a, b, c and a + b) were significantly (p<0.01) higher in ALF hay. The OMD and ME for ALF and QCK hays were 71.2, 43.45% and 10.96, 6.58 MJ per Kg DM, respectively. Under the climatic conditions of the 2005 growing season, the nutritive value of ALF hay was higher to that of QCK hay, because of lower NDF, greater cell content, OMD and ME.
  Sayed Majid Hosseini , Sayed Mostafa Akbary , Naser Maheri-Sis and Afshar Mirzaei-Aghsaghali
  The study was conducted to investigate the effect of excess lysine on performance, viscera weight and abdominal fat in broilers during starter (0-3 weeks) and growing (4-6 weeks) periods. Two hundred and forty days old broiler chicks were reared using completely randomized design with four treatments groups (T1 = 0%, T2 = 0.2%, T3 = 0.4%, T4 = 0.6% excess lysine ) having three replicates of 20 birds in each group for 6 weeks. Results showed that the treatments groups there had no significant differences on feed intake at the rearing period. Weight gain and feed conversion ratio was better (p<0.05) in treatment groups than T1 (control group). There were significant differences in percentage of abdominal fat weight and offal weight between treatments (p<0.05) in total period. Overall, we can suggest that T3 (0.4% excess lysine) had better performance and carcass yield than other treatments.
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