جستجوی مقالات مرتبط با کلیدواژه "پودر سیر" در نشریات گروه "علوم دام"

In order to investigate the effect of feeding milk enriched with garlic powder on performance, digestibility of nutrients, diarrhea status and blood parameters in suckling lambs, twenty-four newborn lambs (birth weight 3.7±0.5) were randomly placed in three treatments and eight replications. The lambs of the control group were fed with milk without garlic powder and the other groups were fed with 1.5 and 3 grams of garlic powder per day, respectively, for 45 days. The results obtained from this research showed that consumption of garlic powder in suckling lambs led to improvement in daily weight gain, final weight and starter feed consumption (P<0.05). Also, treatments caused a significant increase in digestibility of nutrients (P<0.05). The use of garlic powder in experimental lambs improved stool consistency and significantly reduced the number of lambs with diarrhea and the average days of diarrhea (P<0.05). By adding garlic powder, the concentration of glucose and high-density lipoprotein increased (P<0.05). In addition, garlic powder caused a significant decrease in the level of triglyceride, cholesterol and low density lipoprotein in plasma (P<0.05). However, different levels of garlic powder did not make a significant difference on the concentration of urea, albumin, globulin and the ratio of albumin to globulin. According to the present results, it is possible to use garlic powder up to the level of at least 1.5 grams per day as a food additive to improve the performance and health of suckling lambs.

In this experiment, the effect of garlic (GP) and tomato (TP) powders on performance, blood parameters, sex differentiation and hatchability of Ross-308 broiler breeders were examined and compared with In-Ovo injection of garlic or tomato hydroalcoholic extracts. In first experiment, 375 hens and 25 roosters (47 wk.) were randomly allocated to 5 treatments and 5 replicates, for 4 weeks. Treatments included: 1) basal diet (control), 2 and 3) basal diet+ 2 and 4 percent of GP, and 4 and 5) basal diet + 2 and 4 percent of TP, respectively. In second experiment, 200 hens and 20 roosters were randomly allocated to 2 treatments including 1) basal diet and 2) basal diet + 4% of TP (selected treatment of the Exp. 1) in 5 replications from 52-56 wk. During incubation period, experimental treatments included: 1) control group, 2) eggs from hens fed 4% TP, 3) In-Ovo injection of physiological serum and 4 and 5) In-Ovo injection of 0.1 and 0.3 ml of garlic and tomato hydroalcoholic extracts. The results of first experiment, adding garlic and tomato powders was not significant on egg qualitative traits and blood parameters (P>0.05). All In-Ovo injection treatments increased fertility percentage (P<0.05). The second experiment results showed that treatments had no significant effect on the percent of males and females (P>0.05). In general, addition of 4 percent tomato powder to broiler breeders in comparison to In-Ovo injection of hydroalcoholic extracts of garlic and tomato, did not increase male 1-d-old chicks’ percentage of hatched chicks.

Coccidiosis is a serious problem in the poultry industry, and medication is required continuously. There are several approaches to the control of coccidiosis. Several drugs have been used in the control of coccidiosis. The ionophore antibiotics such as lasalocid, maduramicin, monensin, narasin, and salinomycin are extensively used in poultry feed for the prevention or treatment of coccidiosis induced by Eimeria species. Unfortunately, the toxic effects of ionophores cause concern because of their narrow safety margin. Ionophores’ toxicity could be probably due to oxidative damage. Therefore, it can be prevented by the supplementation of antioxidants in the diet. It has been reported that 60 or 120 mg/kg of salinomycin caused some pathological changes in the liver, heart, kidney, and muscles, such as degeneration or necrosis of these tissues. However, administration of salinomycin with vitamin E or selenium showed that vitamin E decreases the pathological changes.  The present study aimed to investigate the effects of salinomycin administration in combination with some natural antioxidants on reducing salinomycin toxicity in laying chickens.
A total number of 400 day-old hy-line w36 chicks were used in a completely randomized design with five treatments and four replications for 35 days. Treatments were included: 1) control diet, 2) negative control diet containing 0.05% salinomycin sodium, 3) negative control + garlic powder (15 g/kg of diet), 4) negative control + selenium (450 mg/kg of diet) + vitamin E (2 g/kg of diet), and 5) negative control + zinc-methionine (160 mg/kg of diet). Body weight gain, feed intake, and body weight uniformity were measured weekly. Blood samples were taken to evaluate the levels of antioxidant enzymes, liver enzymes, electrolytes, and malondialdehyde levels at the end of the experimental period.
The results showed that the salinomycin diet (T2) decreased body weight and feed intake compared with the control diet in the total experimental period (P<0.05). But the addition of supplemental Zn-methionine to the diet (T5) led to improved body weight and feed intake (P<0.05). Significant differences were observed among various treatments for the relative weight of visceral organs (liver, heart, kidney, gizzard, proventriculus, intestine, and bursa of Fabricius), but there were no significant differences for spleen and lungs. Also, salinomycin increased the activity of liver enzymes including alanine transaminase (ALT), aspartate transaminase (AST), alkaline phosphatase (ALP), and serum malondialdehyde (MDA) in the negative control group and control group, and decreased the level of serum antioxidant enzymes compared to the control group (P<0.05), but the addition of vitamin E + selenium to the diet, eliminated the negative effects of salinomycin on these parameters (P<0.05). Vitamin E plays important roles in various biochemical and physiological processes, including antioxidation. The protective effect of vitamin E against the alterations induced by salinomycin on these estimated parameters in this study could be attributed to the role of vitamin E as a fat-soluble antioxidant, which protects the biological membranes from oxidative damage and decreases osmotic fragility of erythrocytes. Selenium also exerts its protective effect against oxidative damage by a decline in free radicals and increasing the synthesis of glutathione peroxidase, which catalyze the breakdown of toxic hydrogen peroxide and lipid hydroperoxides. Salinomycin decreased serum chlorine and increased serum potassium compared to the control group (P<0.05), and only the use of vitamin E + selenium adjusted these changes (P<0.05). The T2 group reduced the serum level of chlorine and increased the serum level of potassium (P<0.05). But there is no significant effect on the level of blood calcium. Although all treatments with antioxidants changed the levels of these electrolytes. The changes in electrolyte balance can result in metabolic alkalosis and acidosis. However, the T4 group only reduced the serum levels of potassium and calcium and increased the serum level of chlorine significantly, compared to the T2 group (P<0.05). However, there were no significant differences in the serum sodium and creatinine levels among various treatments.
Salinomycin administration in the diet of laying chicken induces undesirable effects on some estimated parameters probably due to oxidative damage. But, the supplementation of pullet diets with vitamin E and selenium can reduce the possible side effects of salinomycin.

This study was done to investigate the effect of different levels of garlic powder on performance, relative weight of carcass components and blood metabolites of Japanese quail. One hundred 21-day male Japanese quails were randomly assigned to 5 treatments, 4 replicates and 5 birds in each replicate. The experimental treatment included: control diet without garlic powder, diets supplemented by 0.5%, 1%, 1.5% and 2% garlic powder. Quails fed for 21 days. Quails access to water and feed freely. Results showed that feed intake, daily weight gain and feed conversion ratio of quails were not affected by different levels of garlic powder. The effect of adding garlic powder to the diet on carcass efficiency, ventricular fat, total cholesterol and low-density-lipoproteins was significant (p <0.05). The birds fed diets containing 1% garlic powder had the highest carcass efficiency and the difference with birds fed diets without herbal medicine supplementation was significant (P <0.05). As increased garlic powder level in the diet, the blood total cholesterol and lipoproteins linearly decreased. According to the results obtained from this experiment, dietary supplementation by 1% garlic powder has a positive effect on carcass efficiency and decline undesirable blood metabolites.

To investigate the effect of adding garlic and tomato pomace powder to the diet of Ross 308 broiler breeders on production performance, body weight, egg quality traits, and hatchability characteristics, a total of 375 chickens were randomly assigned to five iso-caloric and iso-nitrogenous diets, including four diets containing 0.2 and 0.4% of garlic and tomato pomace dried powder and a control diet with five replicates (15 hens and one rooster per pen). Chicken’s body weight through the trial period (47 to 56 weeks of age), daily egg production (%), average egg weight, and hatching traits were recorded daily. The chickens’ body weight was significantly affected in the first five weeks of the experiment (46 to 51 weeks of age) and during the second five-week period (52 to 56 weeks of age). Adding 0.4% tomato pomace to the diet significantly increased the chickens’ weight (P<0.05). For hatching traits, there were no significant differences between treatments (P>0.05). During the first five weeks of the experiment, the feed conversion ratio decreased in the control and the 0.4% garlic powder treatments compared with the other dietary groups. Also, in the second five weeks of the experiment, control, and garlic powder treatments had a lower feed conversion ratio compared with diets containing tomato powder (P<0.05). Based on the results of the present experiment, it can be concluded that adding garlic powder compared to tomato powder caused better results.

For carry out of this study we used 560 Ross 308 (mixed sex) broiler chickens, in a completely randomized design with seven t reatments, four replicates and 20 chickens per each replicate. Experimental treatments were: control (no additive), diets containing levels of 400 and 500 mg/kg Satureja essential oil, diets containing levels of two and four percent garlic powder and diets containing levels of five and 10 percent clover leaf powder. The results of this study showed that weight gain of birds that fed with diets containing Satureja khuzistanica essential oil, garlic and clover leaf powder was less than the control birds (P<0/05) across the trial period. Experimental treatments had no significant effect on serum concentration of thyroid hormones (T3 and T4), cholesterol, triglyceride, HDL and LDL and percentage of dry matter and crude protein of breast muscle. Also, according to different holding times of breast muscle in the freezer (0, 24 and 48 hours), experimental treatments had no significant effect on the amount of MDA and free N at 24 and 48 hours after freezing. According to the results, using of Satureja essential oil, garlic and clover leaf powder at levels investigated in this study, do not have a significant effect on the performance and the antioxidant potential of breast muscle to modulate lipid per oxidation. Therefore, further studies are needed to evaluate the effectivness and active constituents of these nutrients and ensure their properties.

The objective of this study was to determine the effects of different levels of garlic powder (GP) in the starter diet on performance, weight and age of weaning, some of blood metabolites, fecal score, structural growth and nutrients digestibility in new-born Holstein calves. Thirty male and femal dairy calves (40.9 ± 1.9 Kg of BW) were randomly assigned in a completely randomized design to the following three groups 1) basal diet without GP (control), 2) basal diet supplemented with 0.5% GP, and 3) basal diet supplemented with 1% GP for a period of 70 d. All calves recived colostrum until d 3 and then were offered 4 kg whole milk/d from d 4 to weaning. Results showed that dry matter intake (DMI) was higher in the calves fed rations containing 0.5 and 1% GP and the calves fed 0.5% GP had the highest gain, average daily gain (ADG) and weight of weaning (P

Two experiments were conducted to determine the AME content of garlic powder and to investigate its effect as well as vitamin E and Loxidan (as a commercial antioxidant) supplemented in the diet, on growth performance, carcass analysis and meat oxidative stability. In the first experiment, the AME was determined in Leghorn roosters fed diets containing 5, 10, 15 and 20% of garlic powder, whose value appeared to be 2370, 2300, 2090 and 2065 kcal/kg, respectively. In the second experiment, a 2×2×2 factorial arrangement including two levels of garlic powder (0 and 2 percent), two levels of vitamin E (0 and 200 mg/kg), and two levels of Loxidan (0 and 200 mg/kg) were employed in four replicates and twelve broiler chicks in each. According to results, growth performance, the ratio of eviscerated carcass, breast, thigh and abdominal fat to live weight were not affected by garlic powder, vitamin E and antioxidant as they were applied individually. However, applying garlic powder along with Loxidan resulted in better daily weight gain (P

In order to evaluate effect of dietary garlic powder or fresh ground garlic on performance and immune response of broiler chickens, 240 male one-day-old broiler chicks (ROSS 308) were used in a completely randomized design with six treatments of four replicates each. Six is ocaloric and is onitrogenous dietary treatments were prepared as follow: 1) basal diet (control), 2) basal diet 10 ppm avilamycin, 3) basal diet 0.25% garlic powder, 4) basal diet 0.25% fresh ground garlic; 5) basal diet 0.5% garlic powder and 6) basal diet 0.5% fresh ground garlic. Feed consumption and weight gain were recorded weekly and feed efficiency was calculated. On d 42, two birds from each replicate were euthanized by cervical dislocation. Digestive organs, spleen and bursa of Fabricius were weighed separately. Differentiate leucocytes counts as well as PCV measurement was also done using two blood smears from each replicate on d 40. For evaluation of cutaneous basophil hypersensitivity (CBH) response, phytohemagglutininwas injected into toe webon d 40.No significant difference were observed on feed consumption, weight gain, and feed to gain ratio, among treatment groups (p>0.05). Supplementation of the diet with 0.25% fresh ground garlic significantly reduced heterophils to lymphocytes ratio in contrast to control group (p

Carnitine has several roles in lipid oxidation, immunomodulation function and enhancing antibody responses. L-carnitine has been found to exhibit immunomodulatory effects. It enhances serum primary antibody response to sheep red blood cells (SRBC) and subsequent humoral immunity using 100 mg L-carnitine/ kg diet compared with control group in Leghorn chickens (Deng et al., 2006). It was reported that only the immediate effects of dietary carnitine on immunocompetence is known while comparing long and short-term effects on early life on the immune system of broiler chickens is unknown. The organic allyl sulfur components in garlic (mainly allicin) were implicated to mediate its biological activity. The biological activities of these compounds may be related to their SH modification and antioxidant properties (Prasad et al., 1996). AGE treatment prevented the reduction of the antibody production response in thymectomized mice and improved the thymectomy-induced deterioration of learning behaviors in passive avoidance performance and in a spatial memory task (Zhang et al., 1998).
Four hundred Arian one-day-old broiler chicks were used. This experiment was conducted in order to consider the effects of L-Carnitine and garlic powder on broiler chicken performance, blood metabolites and carcass characteristics in a 2×5 factorial arrangement in randomized complete design with 5 dietary treatments, 4 replicates and 12 birds in each and two periods: short (first 3 weeks) and long time (total production period). Dietary treatments were 1) Basal diet (BD: no supplementation), 2) ration having 0.02% flavomycin (positive control), 3) ration having 1.5% garlic powder, 4) ration having 0.025% L-Carnitine and 5) ration having 0.025% L-Carnitine plus 1.5% garlic powder. The birds were kept under conventional conditions for vaccination, temperature, ventilation, and lighting based on Ross catalogue recommendations. Standard management practices of commercial broiler production were applied. They were fed experimental diets from 15 to 42 d of age. The broiler diets were formulated based on standardized ileal digestible amino acids and other requirements were obtained from Ross catalogue recommendations. Humoral immunity of broilers against sheep red blood cells (SRBC) were detected by intramuscularly injection of SRBC (2.5% suspension in PBS, 1 ml/bird) to two birds from each replicate at 8 and 23 days of age in the first and second experiment respectively, followed by a booster injection at 6 days after the first injection. Blood samples were collected at 6 days after the first and second injection and total Ig, IgG and IgM were detected (Cheema et al., 2000). The toe web swelling reaction to PHA-P was measured in 2 broilers from each pen (marked with a black color) at days 12 and 26 of first and second experiment respectively. One-fifth milliliter of a PHA-P solution (1 mg/mL in PBS) was injected subcutaneously into 2 sites on the left toe web of the broilers. As a sham control, 0.2 mL of PBS was injected into 2 sites on the right toe web. The thickness of each injection site was measured using a pressure-sensitive micrometer before injection and at 4, 12, 24, and 48 h after injection (Wang et al., 2000). At the age of 42d, 5 broilers from each treatment with average body weight of each treatment were selected and blood samples were collected and white blood cell concentration like heterophile, lymphocyte percentage and heterophil to lymphocyte ratio were calculated.
Results showed that supplementation time and dietary treatments did not have significant effects on humoral immunity against SRBC and cell mediated immunity response against PHA injection (P > 0.05). Supplementation time and addition of L-carnitine and garlic powder decreased heterophil and heterophil to lymphocyte ratio and increased lymphocyte percentage (P It was concluded that application of the dietary supplements (0.025% L-Carnitine plus 1.5% garlic powder) at the levels like this experiment did not improved humoral and sell mediated immunity whereas they increased immunity of broiler chickens and defensing mechanism.

This experiment was conducted to investigate the effect of synbiotic and two levels of dried garlic powder on performance during 1-49 and ileum morphology and microbial population at 49d of age in broiler chicks. The experiment was conducted in a completely randomized design with 5 treatments, 4 replicates of 10 chicks per replicate. The dietary treatments consisted of 1) control diet without additives, 2) control diet plus 200 mg virginamycin/kg diet, 3) control diets containing 500 mg synbiotic/kg diet, 4, 5) control diet containing 0.2 and 0.4 percent garlic powder, respectively. Body weight and feed intake were measured weekly and used to calculate of the performance parameters. The results showed that at 21 to 49d and whole experiment period, birds fed antibiotic and 0.2 percent garlic powder had better daily weight gain and feed conversion ratio. The length and width of the villus in the birds fed 0.2% garlic powder was higher than the control group. The greatest and least number of lactobacillus and coliform was observed in synbiotic and antibiotic treatment, respectively.

This experiment was conducted to evaluate the effect of dietary garlic powder on performance, blood and egg parameters of Japanese quail, in 8-week old with 3 treatments (diets) and 4 replicates with 20 quail per each replicate for 9 weeks. Treatments including: control (basal diet without garlic powder), treatment 2 (2.5 percent of garlic powder) and treatment 3 (5 percent of garlic powder). Initial and final body weight, feed intake, egg production, eggshell thickness and egg weight were not affected by treatments (p>0.05). Yolk cholesterol, blood triglycerides and Uric acid were affected significantly and was significantly lower in treatment 3 than control diet (p<0.05). HDL in treatment of 3 was significantly higher than the other treatments (p>0.05). The results of this study demonstrated that adding 5% garlic powder to the laying quail diets resulted in improve blood parameters and cholesterol-reducing effect in egg yolk without adverse effects on performance and egg traits.

Two hundred and forty male day-old broiler chicks (Ross 308) were randomly assigned to five dietary treatments including: a corn-soybean meal basal diet (control); basal diet + 0.25% garlic powder; basal diet + 0.25% fresh ground garlic; basal diet + 0.5% garlic powder; basal diet + 0.5% fresh ground garlic. Feed intake (FI), body weight gains (BWG), and feed conversion ratios (FCR) were recorded periodically. On day 42, two chickens form each replicate were randomly selected, and after blood sample collection via brachial vein, euthanized and visceral organs, abdominal fat pad, heart, right ventricle, and total ventricles were weighed. Blood samples were used for measurement of nitric oxide (NO) and malondialdehyde (MDA) concentrations. Inclusion of garlic powder or fresh ground garlic into diet at the levels used in this experiment had no significant effect on FI, BWG, FCR, and carcass yield (p>0.05). However, Inclusion of 0.5% garlic powder into diet caused a significant increase in relative weight of bursa of Fabricius (p<0.05). Both levels of dietary fresh ground garlic (0.25% and 0.5%) caused a significant increase in serum MDA concentrations compared to control group (p<0.05). Dietary garlic powder at 0.25% inclusion rate caused a significant increase in serum NO concentration compared to control group (p<0.05). Overall, it is concluded that dietary garlic powder at the level of 0.25% would be advisable due to its desirable effects on NO concentrations.

This study was conducted to investigate, effects of diets supplemented with methionine and/or garlic powder on performance and carcass composition of broiler chickens. 540 day-old broiler chicks in a completely randomized design with 3 3 factorial arrangement (9 treatments and 4 replication) were fed with different levels of methionine including basal diet (without methionine addition), diet containing methionine recommended by NRC as well as 135% NRC, and different levels of antibiotic. Chicken in 52 days of age were slaughtered and their carcass were analyzed. Addition of methionine at 135% NRC level in diets increased breasts muscle weight(P<0.01). Diets supplemented with garlic powder resulted in significantly high breast muscle weight as compared with negative control(P<0.05). Diets supplemented with Garlic powder leads to significant decrease in abdominal fat pad.Methionine antibiotic interaction in BD+Met+GAR showed highest and BD+GAR appeared with lowest abdominal fat pad (P<0.05).Methionine antibiotic interaction resulted as lowest tight muscle weight (P<0.05). In conclusion results from present study demonstrated that beneficial effects of methionine and/or garlic powder for improvement of broiler carcass quality.

This study was conducted to evaluate effects of different levels of garlic powder (GP) on fattening performance and blood metabolites of Dalagh male lambs. Twenty male lambs of Dalagh breed with 10 months of age and mean initial body weight of 31.5 ± 2.5 kg were assigned randomly to four dietary treatments with five replicates per treatment in a completely randomize design (CRD) for a period of 91 days (7 days for adaptation and 84 days trial). The experimental treatments were: control (without GP), 5 gr GP, 10 gr GP and 15 gr GP/lamb/day. The lambs were fed individually ad libitum. The blood samples were collected in weeks 0, 4, 8, 12 and lambs were weighted every two weeks. Dry matter intake (DMI) was determined every two weeks. Dry matter intake of lambs fed with 15 grams GP per day increased as compared to control. Adding GP had no significant effect on average daily gain (ADG) and feed conversion ratio (FCR). The GP had no effect on serum blood glucose, urea and triglyceride concentration, but treatment with high garlic powder decreased blood urea and triglyceride numerically. In conclusion, the results showed that dry matter intake of lambs fed with 15 grams GP per day increased as compared to control but there were no change in fattening performance and blood metabolites of male Dalagh lambs.

This study was conducted to evaluate the effect of adding a commercial Medicinal Plant (MP) powder containing garlic (Allium sativum) and thyme (Thymus vulgaris) to diets that included Olive Pulp (OP), on the performance and carcass characteristics of broiler chicks. A total of 240 day old male Ross-308 broiler chicks were allocated into six iso-nitrogenous and iso-energetic dietary groups with equal average of body weight per cage. Four pens of birds (n=10) were assigned to each of the six dietary groups. The main factors taken into account within a 3×2 factorial arrangement were three dietary inclusion levels (0, 50 and 100 g/Kg diet) of OP and MP (0 and 2 g/Kg diet) addition. Body Weight (BW) and Feed Intake (FI) were assessed on the 21, 42 and 49th days of age. Data were subjected to Analysis of Variance as a completely randomized design using GLM procedure of SAS. Chicks fed OP-included diets increased in FI during the starting period (0-21); however the reverse trend was found out during the growing period (22-49). Inclusion of OP in diets improved BWG of broilers during the starting period (P≤0.05), however, BWGs did not significantly differ (P<0.05) during the growing (22-42) and the finishing (43-49) periods. Adding MP to diets exerted no significant effect on BWG of birds during the starting and the growing periods (P>0.05), but increased BWG during the finishing period (43-49). Broilers fed OP-included diets had improved in FCR during all the rearing periods (P≤0.05). Birds fed MP-included diets had improved in FCR during the finishing period (P<0.05), but addition of MP to diets did not significantly affect FCR during the starting and the growing periods (P>0.05). In conclusion, OP (an agricultural by-product) can be included in diets of broilers up to 10% with no adverse effects on performance. Addition of the mix powder of garlic and thyme MP to diets of broilers would have beneficial effects on the bird's performance, especially in terms of BWG and FCR.

This trial was conducted to evaluate the effects of different dietary factors that affect egg cholesterol concentration in laying hens of 56 to 70 weeks of age. Three hundred and ninety six Hy-Line W36 laying hens were subjected to 11 experimental treatments, each treatment consisting of 4 replicates, each replicate of 9 hens. Dietary treatments included the control, made up of corn plus soy meal with an AME content of 2750 kcal/kg; vs. experimental treatments comprised of control diet supplemented with 2 and 4% canola oil, 2 and 4% tallow, 1 and 2% garlic powder, 0.1 and 0.2 % probiotic and finally 125, vs. 250 mg/kg of copper in the form of cupric sulphate. All experimental groups received AME plus other nutrients on an equal basis. Egg production and weight were assessed on a daily basis. During the laying period from 58 to 70 weeks of age, egg production rate, egg, feed intake, FCR, albumin quality and weight, shell thickness and fractional shell weight were found out as not differing among treatments. Yolk weights were significantly higher when 1%, and 2% garlic powder as well as 125, 250 mg/kg of Cu were added to the diets (P<0.05). Adding 125 and 250 mg/kg of copper to the laying hen's diets reduced egg cholesterol concentration by 23.4 and 26.5 percent respectively (P<0.01). Egg yolk cholesterol concentration decreased significantly in birds fed 1 and 2 percent of garlic powder (14.47 and 16.2% as compared to control group) (P<0.01). Probiotic treatment increased the serum cholesterol level significantly. In conclusion, it was found out that an inclusion of 125 mg/kg of cu plus 1% of garlic powder in the laying hen's diets can decrease yolk cholesterol concentration without bringing about any adverse impacts on the hen's production performance.

A study carried out to compare three feed additives effects on performance and economical efficiency of broiler chickens. This research conducted using a completely randomized design with 4 treatments, 4 replicate and 25 chicks each replicate. The experimental basal diets formulated according to Ross 308 manual and the peribiotic, probiotic and garlic powder was added to the basal diets as additives. The treatments were: basal diet (free of additives), 2- basal diet + 0.3% Fermacto, 3- basal diet + 0.3% primalac and 4- basal diet + 1% garlic powder. All chicks were fed with same cornsoybean meal based additive free starter diet from 1-10 d and then at grower (11-28 d) and finisher period (29-42 d) were fed the experimental diets. The diet containing Fermacto prebiotic significantly increased the daily weight gain of chicks. In grower phase the birds fed with garlic powder consumed more feed, but in the finisher phase the significant difference was observed on feed intake in birds fed with fermacto prebiotic. The best feed conversion ratio achieved in treatment containing prebiotic or probiotic and other groups. The economical comparison of each kg of body weight gain showed an increase in costs of diet with garlic powder or Primalac probiotic and a decrease in the cost per Kg of body weight gain in treatment containing Primalac prebiotic in comparison to the control group.