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Articles by Gh. Sadeghi
Total Records ( 5 ) for Gh. Sadeghi
  Gh. Sadeghi , A. Samie , J. Pourreza and H.R. Rahmani
  This study was conducted to determine canavanine content and examine the efficacy of soaking in water, acetic acid or heat treatments on the detoxification of bitter vetch for broiler chickens. A total of 1280 one-day old broiler chicks were placed in 64 pens, twenty in each pen. Treatments were included a corn -soybean based diet as control; raw bitter vetch; soaked in water (1:5, wt/vol) for 12 h, autoclaved (121oC, 20min), then dried at room temperature (SAD); coarsely ground, soaked in water for 24 h, autoclaved and dried (GSAD); coarsely ground, soaked in water for 47 h with exchange of water every 12 h, cooked (75min at 95oC) and dried (GSCD); coarsely ground, soaked at 1% Acetic acid solution for 24h at 60oC (GAAS) bitter vetch in three levels (15, 30, 45%). Each treatment replicated four times. Raw bitter vetch was contained 0.073 percent canavanine. All processing methods reduced canavanine content of seeds to a negotiable amount. Feeding of GSCD and GSAD diet resulted to higher and lower body weight (BW), feed intake (FI) and feed efficiency ratio (FER) at 21, 42 and 49 days, respectively, than other detoxification methods (P<0.05). Increasing Bitter vetch level from 15 to 30 and 45 percent significantly declined BW, FI and increased FER (P<0.05). Feeding of diet with 15% of GSCD and SAD bitter vetch resulted in performance more similar to control diet (P>0.05). Different detoxification methods had no effect on the liver weight, but pancreas weight decreased in all detoxification methods in comparison to raw bitter vetch (P<0.05). In all bitter vetch treatments liver weights were higher in 30 and 45% in comparison to15% (P<0.05). The results showed that all processing methods were efficient to eliminate canavanine from seeds and GSCD and SAD treatments were more effective to detoxification of the bitter vetch for broiler chicken.
  A. Tabeidian , GH. Sadeghi and J. Pourreza
  This study was conducted to examine the effect of different protein and soybean oil levels on broiler chickens. A total of 480 one-day old broiler chicks of a commercial breed (Ross 308) from both sex with equal ratio were placed in 32 pens, fifteen in each pen. Treatments were included soybean oil at 0, 2.5, 5 and 7.5% levels and crude protein levels were NRC (1994) recommendation and 10 percent more than NRC recommendation (NRC x 1.10). Each treatment replicated four times. Inclusion of soybean oil in diet had no significant effect on feed intake in chicks in NRC protein level. Feeding high protein diet resulted to more feed intake than NRC. Increasing diet protein up to 10 % more than NRC recommendation could not improve body weight gain in broiler chickens except for 7-21d old chicks that fed a diet containing no soybean oil and high protein level that resulted to highest weight gain. In 7-21 d old chicks feeding a diet with 2.5% soybean oil and a protein level 10% more than NRC recommendation resulted to lowest feed conversion ratio. Feeding different levels of soybean oil and protein had no effect of carcass, pancreas, intestine and preventriculus weight. Lowest abdominal fat was observed in chicks fed with a diet containing 7.5% soybean oil with NRC recommendation protein level. In chickens that fed with higher protein level, fat supplementation resulted to an increase in plasma triglyceride.
  GH. Sadeghi and S.A. Tabiedian
  This experiment was carried out to examine the effect of tallow supplementation and reducing protein level on broiler chickens performance. A total of 480 one-day old broiler chicks of a commercial strain (Arian) from both sex with equal ratio were placed in 32 pens, fifteen in each pen. Treatments were included tallow at 0, 2.5, 5 and 7.5% levels and protein level reduction in NRC energy diets as ME to CP ratio increased 10 unit. Each treatment replicated four times. Metabolizable energy of tallow was determined by Sibbald method. Results showed that AMEn value of tallow was 7150 kcal kg-1. In whole production period (days 7-56) chicks that fed with a diet containing NRC protein level, adding 5 and 7.5 percent tallow significantly (P< 0.05) increased feed intake but in reduced protein diets, adding tallow could not affect feed intake. Feeding different levels of tallow and diet protein reduction in both low and high energy diets had no significant effect on weight gain in ages 1-21 and 42-56 and 7-56. There was no significant difference in feed conversion ratio in chicks fed with different experimental diets in all ages. Carcass, liver and abdominal fat did not affect by experimental treatments. The results showed that adding 2.5 percent tallow to a diet with a protein level according to NRC recommendation results to better performance.
  S.A. Tabeidian and GH. Sadeghi
  This study carried out to evaluate the effect of plant based calcium salt of fatty acids (fat powder) on broiler chicken performance, carcass, organs and some plasma characteristics. A total of 320 one-day old broiler chicks of a commercial breed (Ross 308) from both sex with equal ratio were placed in 16 pens, twenty in each pen. Treatments were included Ca-salt of fatty acids at 0, 2.5, 5 and 7.5%. Each treatment replicated four times. Inclusion of fat powder had no significant effect on feed intake. Feeding different levels of fat powder significantly (P< 0.05) decreased weight gain in 7-21 and 7-49 day old chicks, and in other ages decreased weight gain numerically. Using of calcium salts of fatty acid significantly (P< 0.05) increased feed conversion ratio in 7-21 and 7-49 days old broiler chicken. Inclusions of fat powder in diet dose not affect carcass, abdominal fat, liver, pancreas, intestine and heart percentages. No significant differences were observed in plasma triglyceride, cholesterol, HDL and LDL. Our finding showed that using of fat powder could not improve broiler chickens performance.
  Gh. Dashab , Gh. Sadeghi and M. Mehri
  A total of 600 one-day old broiler chicks of two commercial breeds were used in a CRD design to compare performance and humoral immune response to Newcastle disease. Body weight and feed intake were measured weekly and at 42 day of age ten chicks were chosen randomly from each pen and slaughtered to determination of carcass characteristics. On vaccination day, 10 chickens selected randomly and were wing banded to monitor the antibody titer trend. There was no significant difference in body weight between studied strains. No significant difference was observed in feed intake and feed conversion ration between Arian and Lohman chicks. Lohman chicks had greater carcass weight and percentage than Arian. Abdominal fat weight was significantly (p< 0.05) higher in Lohman than Arian chicks. In both strains the antibody production increased by increasing the days after vaccination. In Arian chicks the increase was more pronounceable at 10 days after vaccination but Lohman chicks had highest antibody production at 15 days after vaccination. Strain effect was observed only at 10 day after vaccination and Lohman chicks showed greater antibody production against NDV vaccine than Arian (p< 0.05). It could be concluded from results that Arian and Lohman chicks has similar performance, but they show different immune response to NDV vaccine.
 
 
 
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