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Articles by R. Vakili
Total Records ( 2 ) for R. Vakili
  G.R. Ahooei , A.R. Foroughi , A.M. Tahmasbi , A.R. Shahdadi and R. Vakili
  To evaluate the effect of different levels of Dried Citrus Pulp (DCP) and urea on performance of fattening male calves, twenty Brown Swiss male calves (192.15±30 kg live weight and 196.3±24 days age) were housed in individual tie stalls and randomly allocated to four experimental diets as follows: without urea and DCP (control), 12% DCP+0% urea, 0% DCP+0.65% urea and 12% DCP+0.65% urea. The experimental diets consisted of 35% forage (corn silage) and 65% concentrate. The length of the trail was 100 days (15 days for adaptation and 85 days for experimental period). Data showed that experimental diets had significant effect on nutrients apparent digestibility (p<0.05). The dry matter and crude protein digestibility of diet four was higher than other diets. According to the results, the experimental diets had no significant effect on dry matter intake, average daily gain and feed to gain ratio (p>0.05). There was no significant difference in rumen pH but rumen N-NH3 was significantly differ between treatments (p<0.05). Calves were fed diet three significantly had the highest rumen N-NH3. Ruminating, eating and chewing of calves had no significant difference between treatments (p>0.05). Blood metabolites (glucose, triglyceride, urea nitrogen) were not significantly affected by experimental diets approximately 2 h after feeding. The experimental diets had no significant effect on carcass and liver weight (p>0.05). It seems that including of dried citrus pulp supplemented urea in the fattening male calves ration can improve dry matter intake, feed conversion ratio, average daily gain and increase nutrients apparent digestibility of Brown Swiss male calves.
  A.A. Rashidi , Y. Gofrani Ivari , A. Khatibjoo and R. Vakili
  The purpose of this study was to determine the effect of corn-soybean basal diets containing (5% tallow, 5% fish oil and 5% fish oil with vitamin E and zinc) each one in two temperatures (21 and 32°C) on immune response and blood parameters of Arbor Acres (AA) broiler growing from 1-42 days of age. The results demonstrated that heat stress decreased bursa of fabricius weight and spleen weight also high ambient temperature decreased humoral and cell-mediate immune responses and increased hetrophil to lymphocyte ratio (H L-1). Fish oil+vitamin E and zinc diet improved humoral and cell-mediate immune responses, decreased H L-1 ratio and increased bursa of fabricius and spleen weight at two temperatures. The diets containing tallow decreased bursa of fabricius weight and spleen weight. In chicks fed by fish oil, the response to 2-4 Dinitrochlorobenzene (DNCB) was improved. It did not have significant influence on Phytohemagglutinin M (PHA-M) and Sheep Red Blood Cells (SRBC). The results of experimental temperatures on blood parameters demonstrated that high ambient temperature increased cholesterol, triglyceride, glucose, hematocrite percentage and serum Malondialdehyde (MDA), although it did not affect total protein. Higher cholesterol and triglyceride observed in chicks fed with diet containing tallow and higher MDA in chicks fed with diet containing fish oil. Fish oil plus vitamin E and zinc decreased cholesterol, triglyceride, MDA and glucose significantly. Fat type did not affect total serum protein and hematocrite percentage.
 
 
 
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