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Articles by A.A. Sadeghi
Total Records ( 4 ) for A.A. Sadeghi
  A. Nouri-Emamzadeh , A. Yaghobfar , A.A. Sadeghi , A. Mirhadi and M. Chamani
  The experiment was conducted to determine influence of caecectomy on Endogenous Amino Acid Losses (EAAL) in unfed Rohde Island Red adult cockerels. During the experimental period (48 h), excreta of cockerels were collected and dried, ground and assayed for quantities of amino acids. The caecectomy increased (p<0.05) the endogenous quantities of serine, histidine, arginine, cystein and isoleucine and decreased (p<0.05) the endogenous quantities of methionine, lysine and leucine, but had no significant influence (p>0.05) on the endogenous quantities of aspartic acid, Glutamic acid, glycine, threonine, alanine, tyrosine, valine and phenylalanine. However, the mean quantity of EAAL in caecectomized cockerels was approximately 10% more than it in intact cockerels (p<0.05).
  Ali Nouri-Emamzadeh , A. Yaghobfar , A.A. Sadeghi , S.A. Mirhadi and M. Chamani
  The experiment was conducted to determine metabolizable energy contents of Soybean (SBM), Canola (CM) and Sunflower (SFM) meals by Conventional Addition Method (CAM) included with intact and caecectomized adult cockerels for 7 day: A 3 day pre-experiment and a 4 day experiment period. The values of SBM and CM obtained using intact cockerels were approximately 11 and 5% higher (p<0.05) than those used cecectomized cockerels, respectively. There was no significant effect of caecectomy on the measured values for SFM (p>0.05). Therefore, the effect of caecectomy on ME values in adult cockerels is dependent on the compositions of the meal assayed. However, caecetomised and intact cockerels had not differences for amount of EEL and ENL excretion.
  H.R. Shahbazi , A.A. Sadeghi , H. Fazaeli , G. Raisali , M. Chamani and P. Shawrang
  Samples of barley straw were irradiated with various doses of electron beam (100, 200 and 300 kGy) to evaluate the effects of electron beam irradiation on Neutral Detergent Fiber (NDF) and Acid Detergent Fiber (ADF) degradation. Nylon bags of untreated or irradiated barley straw were suspended in the rumen of three Taleshi bulls for up to 962 h and resulting data were fitted to non-linear degradation model to calculate degradation parameters of NDF and ADF. Results showed that the washout fractions (a) and the potentially degradable fraction (b) of NDF and ADF of barley straw increased linearly (p<0.001) as irradiation dose increased. The degradation rate of the b fraction of NDF of barley straw decreased as irradiation dose increased (linear effect, p<0.001), but this fraction in ADF of samples was the highest at dose of 100 kGy. Effective degradability of NDF and ADF of samples increased linearly (p<0.001) with increasing irradiation dose. Electron beam irradiation at doses of 100, 200 and 300 kGy increased the effective degradability of NDF and ADF at rumen outflow rate of 0.05 h 1 by about 3, 4 and 5% for NDF and 3, 6 and 8% for ADF, respectively. In the condition of this study, electron beam irradiation at dose of 200 kGy appeared to be a suitable dose for improving NDF and ADF degradability of barley straw in the rumen.
  M. Taghinejad , P. Shawrang , A. Rezapour , A.A. Sadeghi and S.R. Ebrahimi
  The aim of this study was to evaluate the effects of gamma irradiation (γ-irradiation) at doses of 15, 30 and 45 kGy on antinutritional factors, in vitro CP digestibility, ruminal Dry Matter (DM) and Crude Protein (CP) degradibility of Canola Meal (CM). Three ruminally fistulated Gezel rams were used to measure ruminal in situ Dry Matter (DM) and CP degradability. The chemical composition of raw and irradiated CM was similar. Results showed that phytic acid in γ-irradiated CM at dose of 15, 30 and 45 kGy γ-irradiated CS decreased (p<0.01) by 26.2, 51 and 56.7%, respectively. Total glucosinolate contents of 15, 30 and 45 kGy γ-irradiated CM was decreased (p<0.01) 26.3, 51 and 63.4%, respectively. From in sacco results, γ-irradiation decreased (p<0.05) the washout fractions of CP at doses of 30 and 45 kGy. Gamma irradiation also reduced (p<0.05) degradation rate of the b fraction of CP so at doses of 30 and 45 kGy, Effective Degradibility (ED) of CP (rumen outflow rate of 0.05 h-1) were decreased by 8.2 and 21.0%, Compared to untreated sample. On the contrary digestibility of ruminally undegraded CP of irradiated CM at doses of 30 and 45 kGy was improved (p<0.05) by 10.6 and 15.5%.
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