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Articles by A. Vakili
Total Records ( 2 ) for A. Vakili
  M. Danesh Mesgaran , M. Malakkhahi , A.R. Heravi Moussavi , A. Vakili and A. Tahmasbi
  This study was conducted to determine the effect of chemical treatment on fermentative activity and nutritive value of Sesame stover by in situ and in vitro gas production techniques. Treatments were untreated Sesame Stover (SS), SS+Sulphuric Acid (SSA), SS+Urea (SSU), SS+NaOH (SSN) and SS+Urea+NaOH (SSUN). Nylon bags (9x17 cm) each containing 5 g sample (2 mm screen) were incubated in the rumen of fistulated sheep for 0.0, 4, 8, 16, 24, 36, 48, 72 and 96 h to determine the ruminal disappearance. Cumulatve gas production was recorded at 2, 4, 6, 8, 12, 24, 36, 48, 72 and 96 h of incubation and the equation of P = A (1-e-ct) was used to describe the kinetics of gas production. Results showed that NDF concentration of the samples was significantly (p<0.05) decreased by sulphuric acid treatment also the urea caused a significant (p<0.05) increase in CP content of sesame stover. Dry matter ruminal disappearance was significantly (p<0.05) increased by NaOH treatment. Moreover, the in situ quickly degradable fraction of CP was increased (0.625±024) when urea applied. The b fraction and rate of gas production were significantly (p<0.05) increased (72.32±2.88) and decreased (0.029±0.002), respectively by adding the NaOH to SS.
  M. Danesh Mesgaran , A. Vakili and J. Tavallaei
  Alfalfa hay (30% dry matter) was ensiled as untreated (AS) or treated with formic acid (ASF, 24 mL kg-1 DM) or formic acid+urea (ASFU, 24 mL and 4 g kg-1 DM, respectively). Disappearance of protein and dry matter from the samples was determined using the in situ mobile bag procedure. In lactation trail, 12 Holstein cows received diets containing 28.5% AS or ASF or ASFU, 30% corn silage, 7% alfalfa hay and 34.5% concentrate for 8 weeks. The chemically processed applied caused a significant decrease in ruminal and an increase in post-ruminal dry matter disappearances of the silages evaluated (p<0.05). Dry matter intake and yields of milk did not influenced by the experimental diets. Milk urea nitrogen concentration of the cows received the diet containing ASFU were significantly lower than the others (p<0.05). Blood plasma concentration of glucose was increased when the diet containing of ASF was fed to the animals (p<0.05) compared with the others.
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