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Articles by A.R. Heravi Moussavi
Total Records ( 4 ) for A.R. Heravi Moussavi
  M.R. Akbari , H. Kermanshahi , H. Nassiri Moghaddam , A.R. Heravi Moussavi and J. Tavakkol Afshari
  This experiment was conducted to evaluate the effects of additional supplementation of the diet with vitamin A, vitamin E and zinc, on blood cells, organ weights and humoral immune response of broiler chickens fed a wheat-soybean meal based diet. In a completely randomized design with 2󫎾 factorial arrangement, 224 day-old male broiler chicks were assigned to 32 groups. Factors and their levels were as follows: vitamin A (basal diet, basal diet supplemented with 10,000 IU kg 1 retinol acetate); vitamin E (basal diet, basal diet supplemented with 50 IU kg 1 -tocopherol acetate) and Zinc (basal diet, basal diet supplemented with 60 mg kg 1 Zn using zinc oxide). Sampling for blood and organ weights were done at 21 day of age. Humoral immune response were evaluated by intramuscular injection of Sheep Red Blood Cells (SRBC) at 21 day of age followed by bleeding at 7 and 14 day post injection. Supplementation of the diet with vitamin A, vitamin E, or zinc significantly (p = 0.001) increased the number of White Blood Cells (WBC); but had no effect on Red Blood Cell (RBC) counts, Hematocrit (Ht) and Haemoglobin (Hb). Vitamin A supplementation significantly (p = 0.016) decreased the proportion of monocytes in total number of counted monocytes, lymphocytes and heterophils. Supplementation with zinc significantly decreased (p = 0.003) the ratio of heterophils to lymphocytes. A significant vitamin A vitamin E zinc interaction was found for WBC counts and for the proportions of lymphocytes and heterophils (p = 0.001). Supplementing the diet with either vitamin A or vitamin E had no significant effect on relative weights of liver, bursa and spleen. However, addition of zinc to the diet significantly (p = 0.019) increased relative weight of spleen. Supplementation of the diet with vitamin E or zinc (but not with vitamin A), significantly increased total antibody titres against SRBC. The results suggest that additional supplementation of the diet with vitamin A, vitamin E, or zinc can be effective in general immune responses by affecting blood cell proportions and also indicated that zinc can be considered as an anti-stress nutrient, regarding the heterophil to lymphocyte ratio index. It also, indicates that vitamin E is more important than vitamin A or zinc in persistency of an immune response.
  F. Rezaii , M. Danesh Mesgaran , A.R. Heravi Moussavi and M.H. Fathi Nasri
  The effect of different Effective Rumen Degradable Protein (ERDP) to Fermentable Metabolizable Energy (FME) on early lactating cow responses was investigated. Total tract digestibility of organic matter of various feedstuffs including barely grain, corn grain, wheat bran, cottonseed meal, soybean meal, sugar beet pulp, alfalfa hay, cotton seeds, corn silage and fish meal was determined using in situ technique. These data were used to predict FME of the feedstuffs. Two diets were provided with different ERDP/FME ratio (9.7 and 10.7 g MJ 1). The diets fed to fourteen early lactating Holstein cows averaging 2116 Days In Milk (DIM) and 329 Kg d 1 milk yield for seven weeks, using a completely randomized design. Dry matter intake, milk yield and milk composition were measured weekly. Blood metabolites including glucose and urea nitrogen were measured in weeks 4 and 7. Rumen fluid NH3-N was recorded in the 3rd week of the experiment. Dry matter intake was significantly (p< 0.05) lower for cows fed diet with ERDP/FME = 9.7 g MJ 1 than those fed ERDP/FME = 10.7 g MJ 1 (21 vs. 21.6, respectively). Milk yield was significantly (p< 0.05) higher in cows fed ERDP/FME = 9.7 g MJ 1 compared with those fed ERDP/FME = 10.7 g MJ 1 (35.2 vs. 32.3, respectively). Milk composition, blood metabolites and rumen fluid NH3-N were not significantly affected by the treatments (p>0.05).
  M. Danesh Mesgaran , H. Jahani-Azizabadi and A.R. Heravi Moussavi
  Ruminal, post-ruminal and total tract crude protein disappearance of cottonseed meal containing 105 (CSMH) or 65 (CSML) g oil per kg of dry matter (DM), soybean meal (SBM), rapeseed meal (RSM) and sunflower meal (SFM), originating from Iranian plant varieties, were measured using in situ mobile bag, three-step in situ/in vitro (3-step) and in vitro enzymatic procedures. For the in situ mobile bag technique, 4 Holstein steers (45050 kg, body weight) fitted with ruminal fistulae and T-shaped intestinal cannulae were used. Three-step procedure was followed by rumen incubation of samples for 12 h and enzymatic incubation of ruminal undegradable samples. In vitro enzymatic technique was followed by 1 h borate- phosphate buffer incubation, then 4 h in protease solution as ruminal disappearance and enzymatic (pepsin and pancreatin) incubation of ruminal undegradable samples. A significant (p<0.01) effect was found between the procedures to measure ruminal, post-ruminal and total tract CP disappearance. The protein disappearance of oilseed meals in the rumen and post-rumen determined in vitro enzymatic procedure tended to be higher than 3-step technique. Post-ruminal protein disappearance measured with in vitro procedure was higher (p<0.01) than in situ mobile bag and 3-step techniques (In vitro = 0.75, In situ mobile bag = 0.74 and 3-step = 0.60; S.E.M = 0.023, respectively). There was a significant (p<0.01) effect of feeds on ruminal, post-ruminal and total tract CP disappearance. The CSMH had a lower (p<0.01) ruminal CP disappearance, while the SFM had higher value (0.58 and 0.91, respectively). The CSMH had lower ruminal CP disappearance compared with CSML (0.58 vs. 0.68, respectively). The CSML had a lower (p<0.01) post-ruminal CP disappearance, while the SBM had higher value (0.59 and 0.81, respectively). In addition, our results indicated that when used to assess post-ruminal disappearance of oilseed meal protein, the 3-step method can underestimate the disappearance of protein.
  T. Mohammadabadi , M. Danesh Mesgaran , A.R. Heravi Moussavi , M.R. Nasiri and M. Chaji
  The objective of this study was to determine in situ dry matter (DM) and crude protein (CP) degradability of sunflower meal containing 25 and 165 g fat kg-1 DM and untreated and treated with sodium hydroxide (NaOH, 40 g kg-1 DM) and formaldehyde ( 30 and 60 g kg-1 DM). DM and CP degradation of the samples were determined using in situ technique in two fistulated Holstein steers (40012 kg, body weight) and data were analysed to estimate soluble fraction (a), potentially degradable fraction (b), degradation rate (c) and effective degradability (ED). Formaldehyde decreased (a) fraction of DM (p<0.05). NaOH treated high fat sunflower meal had the highest (a) fraction and the lowest of (b) fraction of DM, (0.43 and 0.31, respectively). Formaldehyde and NaOH significantly decreased degradation rate (c) of DM. Formaldehyde (30 g kg-1 DM) treated low fat sunflower meal had the lowest ED of DM (0.44, k = 0.03 h 1) (p<0.05). Fraction of (a) and ED of DM of low fat sunflower meal was less than high fat sunflower meal. Formaldehyde and NaOH significantly were affected fractions of a, b, c and ED of CP (p<0.05). Fraction of (a) of CP decreased by formaldehyde and NaOH. Treatment of sunflower meal (low and high fat) with formaldehyde at 60 g kg-1 DM resulted in the highest (b) fraction and the lowest of (c) fraction and ED of CP. Crude protein (b) fraction of low fat sunflower meal was more than high fat sunflower meal but there was not any significant difference for (a) fraction and ED. DM and CP disappearance after 24 h was decreased by formaldehyde and NaOH. Therefore, it is appears that formaldehyde, NaOH and fat content of sunflower meal can affect DM and CP degradability parameters.
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