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Articles by A. Taghizadeh
Total Records ( 11 ) for A. Taghizadeh
  Sh. Golzar Adabi , Gh. Moghaddam , A. Taghizadeh , A. Nematollahi and T. Farahvash
  The effect of two dietary levels of L-carnitine and vegetable fat powder on broiler breeder fertility, hatchability, egg yolk and serum cholesterol and triglyceride was studied. Two hundred fifty female and twenty five male (Classic Hubbard parent stock) were distributed randomly in five groups of 50 with five replicate of 10 females and one male. Two levels of L-carnitine 0, 60 ppm (for females) and 0, 500 ppm (for males) and vegetable fat powder (0, 1.5%) and a diet with high lysine and methionine (0.3%) fed for both of male and female within one of treatment were used in a complete random design of treatments. The parameters as hatchability, fertility, egg weight, albumen height, Haugh unit, color of yolk, shell thickness, shell strength, yolk weights, egg yolk and serum cholesterol and triglyceride were measured. No significant differences were observed in external and internal egg quality. Supplemented diet with L-carnitine had effect on hatchability (P< 0.05) and fertility (P< 0.01). L-carnitine had no effect on egg production except on fifth and sixth weeks (P< 0.01). None of experimental diet had no effect on male serum cholesterol, serum triglyceride in both sex and total yolk cholesterol but L- carnitine had effect on female serum cholesterol (P< 0.05). L- carnitine had decreased egg yolk cholesterol (mg/gr) (P< 0.05). Yolk weight increase in response to dietary supplementation of L-carnitine(P< 0.05) and L-carnitine content of egg yolk increase with L-carnitine supplementation (P< 0.05).
  A.M. Tahmasbi , E. Kashefi , Gh. Moghadam , A. Taghizadeh and H.A. Ghasemi
  An investigation was made to find out the importance of β-adnergenic and lysine on carcass characteristics and blood metabolite of 648 broiler chickens from 21- 42 days of age. Effect of metaproterenol (a β2- adrenergic agonist) and lysine were assessed by mixing them in feed at 0.0, 0.25, 0.50 and 1.00 ppm metaproterenol sulfate and 100%, 115% and 130% of NRC recommended lysine in a 4x3 factorial arrangement of treatments. Chickens were reared under normal condition to 3 week of ages and then randomly allocated to treatments. Each treatment contained 3 pens with 18 birds/pen. Body weight gains (BWG), feed conversion ratio (FCR) abdominal fat pat (AFP) breast weight (BW) were measured. Result indicate that during 4th and 5th week of study using metaproterenol (0.5 ppm ), compare to control group, improved BWG (5.1%), carcass efficiency (3.4%) and breast weight (2.2%), breast and thigh muscle protein and depressed abdominal fat (P< 0.05). Increasing lysine levels lead to significant increase in body weight gain, carcass weight, carcass efficiency, breast muscle weight (P< 0.5), but it has no effect on feed intake, feed conversion ratio, blood metabolites. Data from this experiment suggested that both adding 0.5 ppm β-adrenergic agonist metaproterenol sulphate significantly improved birds performance and their carcass quality and the most efficient lysine level for broiler chickens was proved to be 115% NRC recommended.
  Sh. Golzar Adabi , A. Haji Babaei , h. Moghaddam , A. Taghizadeh , T. Farahvash , H. Lotfollahian and F. Moslemi Pour
  To investigative the effect of dietary L-carnitine on ostrich sperm quality, a research was conducted in a completely randomized design consisting of 3 treatments and 4 replicates. The total numbers of birds used in this trail was 12 African black neck male ostrich. The experimental rations were prepared using the different levels (0, 250 and 500 ppm). The metabolizable energy, protein and the nutrient of these rations were similar. In order to study semen volume, sperm motility, live sperm percent, sperm count and abnormal sperm percent, after one month adaptation, semen collected at the beginning of every three month. The results of statistical analysis of data obtained indicated that there were significant effect of L-carnitine on semen volume (p<0.01), sperm motility, live sperm percent, sperm count (p<0.05) but L-carnitine had no significant effect on abnormal sperm percent.
  H. Ilghami , A. Taghizadeh , H. Janmohammadi and J. Shoja
  Three plant and animal derived protein sources including Fish Meal (FM), Poultry By-products (PBM) and Whole Cottonseed (WCS) were evaluated with in situ technique. The using incubation times were 0, 4, 8, 12, 16, 24 and 48 h. There were significant differences between protein sources in terms of DM and CP disappearances. Effective degradabilities of Dry Matter (DM) and Crude Protein (CP) of WCS at 3 outflow rates were significantly higher than those of the other protein sources. Animal-derived protein sources such as PBM and FM had significantly lower effective DM and CP degradability values than those of plant-derived protein sources such as WCS. Therefore, animal-derived protein sources with a low degradability can be used to increase the bypass protein. The CP degradation parameters obtained in this experiment using sheep would be very useful in improving the accuracy of formulation of sheep diets.
  A. Taghizadeh , M. Hatami , G.A. Moghadam , A.M. Tahmasbi , H. Janmohamadi , N. Pirani and R. Noori
  The effects of chemical treated corn silage (using urea and formaldehyde) on rumen ecosystem (pH, sedimentation and floatation, methylene blue reduction, total VFA, rumen ammonia) and blood metabolites (urea and glucose) in sheep were investigated. Sixteen sheep (41.85±4.6 kg) were used in a 4-treatment completely randomly design. The treatment contented: Corn Silage (CS), Corn Silage treated Urea(10 g kg-1)(CSU), Corn Silage treated Formaldehyde(4 g kg-1) (CSF), Corn silage treated urea (10 g kg-1) and formaldehyde (4 g kg-1) (CSFU). The ruminal pH had significant differences between treatments (p<0.05). The sedimentation andfloatation time, methylene blue reduction, total VFA showed no significant differences between treatments. The ruminal ammonia nitrogen in CUS was significantly more than the other treatments. The blood urea nitrogen in CSU and CSFU was more than the other treatments (p<0.05). There was no significant differences for blood glucose concentration among treatments. This study indicated that formaldehyde decreased ruminal ammonia nitrogen, resulting high escaped protein and offer users flexibility in formulating rations according to the productive performance of target animals.
  A. Taghizadeh , H. Janmohamadi , G.A. Moghadam and J. Shodja
  The in vitro gas production technique was used for determine of fermentation characteristics of barley grain and corn grain. Triplicate samples were used for measuring gas production. The data were fitted by equation of P = A(1-ect) that P is gas production at time t, A is gas production of soluble and insoluble fraction, c is rate of gas production and t is time of incubation. The gas production was measured at 2, 4, 6, 8, 12, 16, 24, 36 and 48 h. The gas production of corn grain at 2 h was lower than barley grain (p<0.05), that can be resulted from slow degradation of starch in corn grain compared to barley grain. However, the sum of gas production of soluble and insoluble (a+b) in corn grain was significantly more than barley grain. The rate of gas production of barley grain was higher than the corn grain. The pattern of fermentation for corn grain differed from that in the barley grain.
  S. Golzar Adabi , G. Moghaddam , A. Taghizadeh , S. Noomi , J. Davoodi , A. Nematolahi and H. Karimi
  In order to study of step down-step up lighting program on performance and respiratory and circulatory system in broiler, a research was conducted in a completely randomized design, consisting of 2 treatment each in 4 replicates. Total 120 day-old male commercial hybrids of cobb chicks were randomly distributed over 2 rooms, at 14 day of age 1 room with a 23 h light: One hour dark lighting schedule and another room with an step down-step up lighting schedule. The length of the trail was 6 weeks. At 21, 28, 35 and 42 days of age, 1 bird from each pen was randomly selected and weighted before euthanizing. The blood samples were collected for hematocrit assay. The relative weight of the organs (heart, lung, right and left ventricle), abdominal fat percent and characteristics including body weight gain, feed intake, feed convertion ratio were measured at the end of each rearing period. At the end of experiment, 2 birds from each pen were euthanizing for carcass quality. The results of statistical analysis of data obtained indicated that there was no significant effect of lighting program on relative weight of lung and heart, carcass fragment percent and weight gain but there was significant effect on hematocrit percent at 4 and 5 weeks of age, relative weight of right ventricle to both of right and left ventricle (p< 0.01). Abdominal fat percent of lighting program chicks was lower than of continues lighting broiler (p< 0.05). In all rearing period lighting program had significant effect on feed intake and feed convertion ratio (p< 0.01) except in 21 day old. The advantages of slowing down early growth of an Step down -Step up Lighting Schedule are of economic significance in terms of improved feed conversion efficiency and reduced losses due to metabolic disorders such as ascites in broiler chickens.
  A. Taghizadeh , M. Hatami , G.A. Moghadam and A.M. Tahmasbi
  Samples of unfractionated forage, isolated NDF and residue insoluble in 90% Ethanol were fermented in vitro and gas production was monitored. The gas volume associated with the ethanol soluble (A fraction) was determined as the difference between the gas from the whole forage and from the ethanol residue.The gas yield associated with the fraction insoluble in 90% ethanol but soluble in neutral detergent soluble (B1 fraction) was determined by subtracting the isolated NDF gas curve from the corresponding ethanol residue curve. This experiment included untreated Corn Silage (CS) and chemically treated corn silage. The rate of gas formation from the A fraction was approximately rather than (p<0.05) the B1 fraction. The gas production of A fraction was less than (p<0.05) the B1 fraction. The CS was treated with urea (10g kg-1) or formaldehyde (4g kg-1). Cumulative gas production was recorded at 2, 4, 8, 12, 16, 24, 36, 48, 72 and 96 h of incubation and McDonald equation was used to describe the kinetics of gas production. Treatment with urea decreased (p<0.05) gas production at 96 h by 217.6 vs 236.7, 240.0, 232.56, 254.0 (mL g 1) for CS, Formaldehyde treated (CSF), urea and formaldehyde treated (CSFU), residue insoluble in 90% ethanol (EIR) and isolated NDF, respectively. The maximum rate of gas production decreased (p<0.05) in CS from 0.028 to 0.023, 0.025, 0.027, 0.0235 and 0.0268 for CSU, CSF, CSFU, EIR and isolated NDF, respectively. The gas production of soluble and insoluble fractions (a+b) decreased (p<0.05) from 261.8 in EIR to 241.8, 240, 225.0 238.7 and 239.3 mL g 1 for CS, CSU, CSF, CSFU and isolated NDF, respectively. The gas production at 96 h in EIR was (p<0.05) rather than the other treatments. Associative effects were calculated as the difference between the observed gas production for mixture of urea and formaldehyde and the individual inclusion (urea or formaldehyde). Associative effects generally observed as decreasing of gas production with duration of incubation. The strong correlation between extent of gas production in incubation times and on dry matter in situ disappearance was obtained. The poor correlation in initial times between gas production and in vitro dry matter and in situ dry matter disappearance observed resulting the improved production of in vitro and in situ dry matter disappearance from gas production in later times of incubation due to all potential components were fermented and produced gas. It is concluded that the associative effects cause decreasing of gas production specially in CSU and also resulted the difference between of the gas formation and the rate of gas production of the A fraction and the B fraction. There is strong positive correlation between gas production with in vitro and in situ dry matter disappearances.
  A. Taghizadeh , Z. Nemati , H. Janmohamadi and N. Pirani
  In order to determine of fermentation characteristics of treated and untreated barley grain the experiment was carried out. The treatment contain Untreated Barley Grain (UBG), Teated Barley Grain at 120C, 5 (TBG 1) and 20 (TBG2) and 100 C, 5 (TBG 3) and 100C, 20 (TBG 4). The gas production was measured at 2, 4, 8, 16, 24, 36 and 48 h. The gas production data were fitted by the equation of P =A(1-e-ct). The gas production of treated barley grain at 48 h was lower than the other treatments (p<0.05). Also the gas production of soluble and insoluble fractions (A) and rate of gas production in most of treated barley grain were lower than the other treatments (p<0.05). Treatment of barley grain by heat had low gas production resulting and improved efficiencies of barley grain and increased by pass protein.
  H. Paya , A. Taghizadeh , H. Janamohamadi and G.A. Moghadam
  The in situ ruminal dry matter (DM) and crude protein (CP) degradation and in vitro DM and CP disappearance of corn grain, soybean meal, wheat bran and alfalfa were compared. For in situ technique duplicate dacron bags were incubated for 0, 2, 4, 6, 8, 12, 16, 24, 36, 48, 72 and 96 h in two wethers fitted with ruminal cannulas. The in vitro degradability of DM and CP calculated at 0, 2, 12, 36 and 48 h incubation time for test feeds. The model of Ørskov and McDonald as y = a + b (1-e-ct) was used for determination of degradation characteristics for both of methods. Wheat bran had higher soluble DM (a) (30.3%), corn grain had higher insoluble potentially degradable DM (b) (59.9%) and soybean meal had higher degradation rate (9.67% h 1) than other feeds, inverses corn grain (14%), alfalfa (40.1%) and alfalfa (3.40% h 1) had lower soluble DM, insoluble potentially degradable DM and degradation rate than other feeds, respectively. Wheat bran had higher soluble CP (a) (33.3%), corn grain had higher insoluble potentially degradable CP (b) (54.5%) and soybean meal had higher degradation rate (9.78% h 1) than other feeds, inverses soybean meal (5.7%), alfalfa (43.9%) and alfalfa (3.75% h 1) had lower soluble CP, insoluble potentially degradable CP and degradation rate than other feeds, respectively. There were differences (p<0.05) among test feeds in dry matter and crude protein degradability after several incubation times. There was strong coefficient of correlation between extent of in situ dry matter and crude protein degradation and in vitro dry matter and crude protein disappearance. The key protein parameters in the proposed Metabolizable protein system, quick digestible protein, slowly digestible protein and digestible undegradable protein are derived from measurements of the rates of degradation of feed proteins suspended in a dacron bag in the rumen. The Metabolizable protein of soybean meal (381 g kg 1) was numerically rather than the other feeds and for corn grain (86 g kg 1) was numerically less than the other feeds.
  A. Taghizadeh , A. Safamehr , V. Palangi and Y. Mehmannavaz
  In order to determine of metabolizable protein of corn grain (CG), cottonseed meal (CSM), barley grain (BG), alfalfa hay (three cut) (AH), beet pulp (BP), tomato pomace (TP), lupin by products (LBP) and fish meal (FM) using in situ method, this study was carried out. Three fistulatd Gizil whether was used. Data were analyzed using of NAWAY package. Metabolizable protein of CG, CSM, first cut AH, second cut AH, third cut AH, BP, TP, LBP and FM was 3.5098, 23.2197, 4.8509, 6.6067, 6.3770, 6.6207, 4.8044, 6.3005, 16.3847 and 39.6774 g kg 1 DM. The FM and CG had highest and lowest MP, respectively. The results showed that test feed with high crude fiber had low degradability. The degradability of CP of test feeds can be used in MP determination and diet formulation.
 
 
 
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