Ali Sami Amin Altawash; Ahmad Zareh Shahneh; Hossein Moravej; Mahdi Ansari; Hamid Deldar
Abstract
Chrysin was orally administered to evaluate testicular histology and relative StAR expression of Ross 308 roosters in the current study. Twenty roosters were randomly divided into four groups and were subjected to the basal diet supplemented with different levels of Chrysin including 0 (Ch0), 25 (Ch25), ...
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Chrysin was orally administered to evaluate testicular histology and relative StAR expression of Ross 308 roosters in the current study. Twenty roosters were randomly divided into four groups and were subjected to the basal diet supplemented with different levels of Chrysin including 0 (Ch0), 25 (Ch25), 50 (Ch50) or 75 (Ch75) mg/bird/day for 12 successive weeks. At the end of trial, all birds were killed and two samples were collected from the same testicle one of which was processed for histology, whereas another was snap-frozen with liquid nitrogen to assess relative gene expression. According to the results, seminiferous tubule and epithelium diameters (p<0.05) and spermatogonial numbers (p<0.01) of both CH75 and Ch50 groups were significantly improved compared to control group. However, Leydig cell numbers and blood vessels were not significantly affected. Birds fed 75 mg of Chrysin per day had significantly higher StARtranscript level compared to other groups (p<0.05). In conclusion, oral administration of Chrysin to roosters could improve testicular histology and steroidogenic parameters in the current study.
Nahid Zahroojian; Hossein Moravej; Mojtaba Zaghari; Saeed Aminzadeh
Abstract
This study was conducted to evaluate the effects of type of poultry on apparent metabolisable energy value of two soybean meal (processed and non-processed SBM).In this study, 36 broiler breeder hens (Ross 308, 62 weeks), 72 male broiler chickens (Ross 308, 35 days) and 36 commercial layer hens (Hyline ...
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This study was conducted to evaluate the effects of type of poultry on apparent metabolisable energy value of two soybean meal (processed and non-processed SBM).In this study, 36 broiler breeder hens (Ross 308, 62 weeks), 72 male broiler chickens (Ross 308, 35 days) and 36 commercial layer hens (Hyline W36, 40 weeks) were used. Dietary treatments were contained a reference diet and two test diets. In the test diets 30 percent of corn, SBM and sunflower oil replaced by processed or non-processed soybean meal. In all three experiments, metabolisable energy of ingredients measured by excreta collection using celite as a marker. The results indicated that the AMEn ofprocessed and non-processed soybean meal for broiler breeder hens was higher than broiler chickens and commercial layer hens. Our results showed that the AMEn of processed SBM were significantly higher than AMEn of non-processed soybean meal (2626.08 vs 2274.75 for broiler breeder hens and 2466.0 vs 1993.6 for broiler chickens and 2344.46 vs 2079.75 kcal/kg for layer hens). In conclusion, the results showed that the metabolisable energy intake of ingredients were different among different birds and processing could increase the nutritional value of soybean meal.
Zahra Gorzin; Hossein Moravej; Gholam Ali Nehzati Paghale; Leyla Tabrizi
Abstract
This study investigated Echinacea purpurea herbal extract in honey bee nutrition and its effect immune system including measuring total haemocyte counts and phenoloxidase enzyme. 28 colonies were randomly divided into 4 treatments and 7 replicates.1- sugar syup – control, 2- sugar syrup enriched ...
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This study investigated Echinacea purpurea herbal extract in honey bee nutrition and its effect immune system including measuring total haemocyte counts and phenoloxidase enzyme. 28 colonies were randomly divided into 4 treatments and 7 replicates.1- sugar syup – control, 2- sugar syrup enriched with 10 cc extract 3- sugar syrup enriched with 20 cc extract, 4- sugar syrup enriched with 30 cc extract. This experiment was conducted in the laboratory and Apiaries University of Tehran-Karaj in completely randomized design repeated in time during spring and summer of 2013. The results showed treatments had a significant effect on phenol oxidase enzyme activity in short and long-term immune (p<0.05), the enzyme was higher in bees that get sugar syrup enriched with 30 cc extract and lower in bees that get sugar syrup. In total haemocyte counts treatments had significant effect in short-term (p<0.05), the factor was highest was in bees that get sugar syrup enriched with 20 cc extract and lower in bees that get sugar syrup.too was observed that higher in bees that get sugar syrup enriched with 30 cc extract and lower in bees that get sugar syrup in long immune. The results showed that this extract had a positive effect on the immune system.
Jamshid Noorghadimi; Hossein Moraveg; Fatemeh Ghaziani; Rasoul Akbari
Abstract
This study was conducted to determine regression equations for the prediction metabolizable energy value corrected for zero nitrogen retention (AMEn) in 12 wheat cultivars (mahdavi, chamran, sabalan, sepahan, sivand, alamoot, sholeh, neishaboor, pishtaz, bahar, shiraz and shahpasand) Cultured in Alborz ...
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This study was conducted to determine regression equations for the prediction metabolizable energy value corrected for zero nitrogen retention (AMEn) in 12 wheat cultivars (mahdavi, chamran, sabalan, sepahan, sivand, alamoot, sholeh, neishaboor, pishtaz, bahar, shiraz and shahpasand) Cultured in Alborz province of Iran. Chromic oxide marker bioassay was used to determine wheat cultivars nitrogen-corrected AME (AMEn) content for adult roosters. The experimental diets were composed of 40% of test sample and the remaining 60% was a combination of other ingredients held constant across diets. AMEn value of the test samples were calculated and related to their chemical composition by regression analysis with SPSS software. The result of multiple regression equations was shown that CF and Starch are the best factors for prediction of AMEn. The equation for prediction of AMEn based on chemical composition was:
AMEn wheat (Kcal/Kg of DM) = 69 STA - 1028 CF.
Haniyeh Sadat Banikamal; Mahdi Zhandi; Malak Shakeri; Hossin Moravej
Abstract
This study was carried out to investigate the effects of dietary levels of an active phospholipids source on immune system response in broilers using 180 male Ross 308 broilers chicks. Experimental diets containing 0, 0.2, 0.4, 0.6, 0.8, 1, 1.2, 1.4, 1.6 % of active phospholipids were prepared in a way ...
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This study was carried out to investigate the effects of dietary levels of an active phospholipids source on immune system response in broilers using 180 male Ross 308 broilers chicks. Experimental diets containing 0, 0.2, 0.4, 0.6, 0.8, 1, 1.2, 1.4, 1.6 % of active phospholipids were prepared in a way that metabolizable energy, protein and other nutrients was the same in them. Blood samples were collected at days 16 for Newcastle test, day 41 for differential measurement of white blood cells and at days 36 and 45 for SRBC test. The obtained results showed that different levels of active phospholipids source had no significant effect on lymphoid organs, number of heterophil, lymphocyte, monocyte, basophil, heterophil to lymphocyte ratio, IgG and IgM titer as well as anti-Newcastle antibody titer in broilers. In conclusion, it seems that levels of used active phospholipids source had no effect on the evaluated immune parameters in this experiment.
Masoud Barzegar; Hosein MORAVEJ; Mahmoud SHIVAZAD
Abstract
The present experiment was conducted to evaluate the effects of different levels of VitaminPremix(VP), fed during the last three weeks of a broiler rearing period (22-42 days), on its growthperformance and carcass characteristics. Four hundred 22 day old broilers received diets containingfour levels ...
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The present experiment was conducted to evaluate the effects of different levels of VitaminPremix(VP), fed during the last three weeks of a broiler rearing period (22-42 days), on its growthperformance and carcass characteristics. Four hundred 22 day old broilers received diets containingfour levels of supplementary VP (0, 33.33, 66.66 and 100%) each at a different weeks of finisherperiod. The diets were formulated as based on wheat and soybean meal, with the experimentconducted on floor pens of 10 treatments and 4 replicates in a completely randomized design. Thedietary treatments consisted of: T1 no VP supplement during 22 to 42 days of age; Treatments 2, 3and 4 containing 33.33% VP,. Treatments 5, 6 and 7 with 66.66% of VP supplement and finallytreatments 8, 9 and 10 containing 100% of VPsupplement. The treatmeants were so arranged that T 2,5 and 8 received only from 22 to 28; treatments 3, 6 and 9 only from 22 to 35, and treatments 4, 7 and10 only from 22 to 42 days of age. The results finally indicated that VP reduction and withdrawal at 22days of age did not impair the birds, performance during their last three weeks of rearing period (22 to42 days). Decrease in the level of VP did not significantly affect the carcass characteristics (carcassyield, percentages of breast, thigh, liver, heart as wellas abdominal fat).
Rasoul Akbari; Hossein Moravej; Kamran Rezayazdi
Abstract
This study was carried out to determine regression equations for prediction of apparent metabolizable energy corrected by nitrogen (AMEn) using 11 barley cultivar (valfajr, Karon, Bahman, Aras, Dasht, Afzal, Zarjo, Kavir, Reihani, Makui and Yousef) the seeds obtain from Alborz province, Iran. All of ...
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This study was carried out to determine regression equations for prediction of apparent metabolizable energy corrected by nitrogen (AMEn) using 11 barley cultivar (valfajr, Karon, Bahman, Aras, Dasht, Afzal, Zarjo, Kavir, Reihani, Makui and Yousef) the seeds obtain from Alborz province, Iran. All of the cultivar were analyzed based on proximate analysis, starch, NDF and ADF. Result showed that ether extract (EE) and nitrogen free extract (NFE) is related to the most (25.5) and lowest (4.2) CV, respectively. The metabolizable energy was measured on adult roosters (Rhode Islandred) using Chromic Oxide marker. The experimental diets were composed of 30% of test sample and the remaining 70% was a combination of other ingredients held constant across diets. The result of multiple regression equations was shown that starch was the best factor for prediction of AMEn of diets. The equation for prediction of AMEn based on chemical composition was:
AMEn barley (kcal/kg of DM) = 52 × Starch (R2=0.983, P<0.000)
Hossein Moravej
Abstract
A total of 160 day-old male broiler chickens (Ross 308) were divided in a completely randomized design experiment, and assigned to 8 treatments and 4 replicates in their experimental units (cages). Treatments included: T1: basal diet with no additional methionine, T2: basal diet plus 0.06, T3: basal ...
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A total of 160 day-old male broiler chickens (Ross 308) were divided in a completely randomized design experiment, and assigned to 8 treatments and 4 replicates in their experimental units (cages). Treatments included: T1: basal diet with no additional methionine, T2: basal diet plus 0.06, T3: basal diet plus 0.11, T4: basal diet plus 0.17 % of DL-methionine, T5: basal diet plus 0.06, T6: basal diet plus 0.11, T7: basal diet plus 0.17, T8: basal diet plus 0.22 % of Herbal methionine. To investigate the immunocompetence of birds at 28 and 42 days of age, two tests were conducted: responding to antibody titer against antigen of Sheep Red Blood Cell (SRBC) and responding to dilution 1-choloro 2-3- DiNitroBenzene (DNCB). Multiexponential and multilinear regressions were employed to determine bioavailability of Herbal Methionine (H-Met)® relative to DL-Met on growth performance and immunocompetence of broilers. Body weight gain and feed intake of the broilers (fed either H-Met or DL Met) improved in the experiment, regardless of Met sources, in comparison with broilers fed basal diet. Immunocompetence results of broilers were not significant at 28 day of age (p
Kazem Yussefi Kelarikikolaee; Hossein Moravej; Seyyed Abdollah Hosseini; Abbas Pakdel
Abstract
The objective of this study was to investigate the effects of different levels of amino acid and feeding methods on performance and immune system of broiler chickens. Experimental design was based on completely randomized design in a factorial arrangement with 3 feeding methods [control (ad libitum feed ...
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The objective of this study was to investigate the effects of different levels of amino acid and feeding methods on performance and immune system of broiler chickens. Experimental design was based on completely randomized design in a factorial arrangement with 3 feeding methods [control (ad libitum feed intake), intermittent feeding (IF) and continuous feed withdrawal (FW)), and 2 amino acid levels (level recommended by Arian and 8 % more). Each treatment was replicated 6 times with 23 male broilers per replicate. The CFW method was associated with a decreased mortality rate (P<0.05). The IF and FW methods improved feed conversion ratio (P<0.05). In CFW and IF feeding programs, the relative weight of spleen was increased (P<0.05). At higher amino acid level, the percentage of circulatory lymphocyte was decreased and that of heterophil and heterophil to lymphocyte ratio were increased (P<0.05). In conclusion, it seems that the FW feeding regimen with Arian recommended amino acid level might have a positive effect on the cellular but not the humeral immune system with no adverse effect on growth performance.
Neda Sheikh; Hossein Moravvej; Mahmoud Shivazad; Armin Towhidi
Abstract
The present study was conducted to evaluate the effect of feeding of different levels of metabolizable energy and of different crude protein levels on the performance and blood factors in Japanese quails in their 5 to 41d old. The experiment was conducted as a 3×5 factorial arrangement, in a completely ...
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The present study was conducted to evaluate the effect of feeding of different levels of metabolizable energy and of different crude protein levels on the performance and blood factors in Japanese quails in their 5 to 41d old. The experiment was conducted as a 3×5 factorial arrangement, in a completely randomized design of four replicates with 40 quails per replicate. The fifteen dietary treatments consisted of three levels of dietary energy (2800, 2900 and 3000 kcal ME kg−1) times five levels of crude protein (22, 23, 24, 25 and 26%). Blood samples were collected towards the end of the study to determine Thyroxine (T4), Triiodothyronine (T3) and cholesterol content. There was no interaction observed between the two factors (P>0.05). Daily weight gain of quails fed diets containing 3000 Kcal ME kg−1 was significantly higher than thoseted at the other levels (P< 0.001). Also, final body weight increased with increasing ME level (P<0.05). Feed conversion ratio was lower in diets of 3000 kcal ME kg−1 content in comparison with 2800 kcal ME kg−1 (P< 0.05). ME level did not significantly influence feed intake (P> 0.05). T4 concentration for males fed 3000 kcal ME kg−1 diet was significantly higher than T4 in the other two treatments level (P<0.01). On in the other hand, T3 coentration in males declined using diets containing 2800 kcal ME kg−1 (P<0.0001). Also T4 concentration in females and cholesterol concentration in both sex enhanced significantly with increasing ME level from 2800 to 3000 kcal ME kg−1 (P<0.05). In spite of T4 concentration, none of the measured characters had been influenced by protein levels (P>0.05). T4 concentration of males was higher in diets 26% crude protein in comparison with diets containing 22% and 23% crude protein (P<0.05). Also, female quails fed with diets containing 25% and 26% crude protein had higher T4 concentration than those fed with other diets (P<0.01).
iman haj khodadadi; hosein moravej; mahmood shivazad; ahmad zare shahne
Abstract
The present research was conducted to estimate the dietary lysine (Lys) requirements of growing quails as based on performance and carcass constituents parameters at 3 to 24 d of age. The experiment was carried out in a complete randomized design arrangement the 6 dietary Lys levels; 1, 1.15, 1.30 (NRC ...
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The present research was conducted to estimate the dietary lysine (Lys) requirements of growing quails as based on performance and carcass constituents parameters at 3 to 24 d of age. The experiment was carried out in a complete randomized design arrangement the 6 dietary Lys levels; 1, 1.15, 1.30 (NRC 1994), 1.45, 1.60, and 1.75 %, from 3 to 24 d of age. A dose-response diet mainly based on corn, corn gluten and soybean meal was used. Lys content was minimized in dose-response diet (1%) while assuring the minimum levels of all other essential amino acids in a manner that would meet or exceed NRC (1994) recommendation. Each treatment consisted of 5 floor pens as replicate with 50 quail chicks. Second order equation methods were utilized for determining the optimum dietary Lys levels. With increase in dietary Lys, body weight, body weight gain and feed conversion ratio improved significantly (P < 0.05). In female Japanese quail, carcass and breast weights were significantly (P < 0.05) affected by dietary Lys. While dietary Lys has no significant effect on thigh weight, carcass and breast yields in female quails (P > 0.05), in male quails, Carcass, breast, thigh weights as well as yields are significantly affected by Lys level, during the birds 3-24 d of age (P < 0.05). Lys needs based on second order equation method when mixed performance parameters taken as response of Lys requirement were recorded as 1.48% at 3-24 d of age. The data suggested that total Lys requirement could be estimated based on second order equation method as 1.48, 1.54% respectively for female and male quails when carcass constitutents are considered at the birds 24 d of age. These results indicate that the NRC (1994) Lys requirement of Lys 1.30% (total basis) is not adequate from the birds 3 to 24 d of age for optimum performance in the case of Japanese quails.
narges vahdani; hosein moravj; kamran reza yazdi; mahdi dehghan
Abstract
For treatment of Anti-Nutritional Factors(ANFs), (?-N-oxalyl -L- ?, ? -diaminopropionic acid (?-ODAP) and Condensed Tannin (CT)) in grass pea, some such alkali treatments as NaOH, NaHCO3, KMnO4 and wood ash, besides water soaking and polyethylene glycol (PEG) (6000 MW) were employed . Metabolizable Energy ...
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For treatment of Anti-Nutritional Factors(ANFs), (?-N-oxalyl -L- ?, ? -diaminopropionic acid (?-ODAP) and Condensed Tannin (CT)) in grass pea, some such alkali treatments as NaOH, NaHCO3, KMnO4 and wood ash, besides water soaking and polyethylene glycol (PEG) (6000 MW) were employed . Metabolizable Energy (ME) of treated and of untreated grass pea was assessed using gas production technique, two-stage in vitro digestibility technique as well as chemical composition determination. merely NaOH treatment significantly increased ME in two step digestibility method. In ME calculation that using gas production, the ME content of grass pea was 8.52 (MJ/Kg DM), while water soaking and PEG revealed the highest levels of, 11.48 and 10.96 (MJ/Kg DM), respectively. There were negative significant correlations observed between ?-ODAP concentration and both OMD (-0.47) as well as DOMD (-0.48). There was no negative effect of CT content of grass pea on dry matter digestibility (correlation 0.55). As regards high crude protein content, percent of ?-ODAP reduction and ME content, either one of NaOH or water soaking treatments are recommended as the most suitable treatments as regards grass pea.
majid allahyari shahrasb; hossein moravej; mahmood shivazad
Abstract
Two trials were carried out to compare the effect of different levels of vitamin premix, in two raising systems of floor and cage, on performance and meat quality of broiler chicks. The chicks were fed with adjusted diets as based on wheat and barley for duration of 29 to 42 days. Trial 1 was carried ...
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Two trials were carried out to compare the effect of different levels of vitamin premix, in two raising systems of floor and cage, on performance and meat quality of broiler chicks. The chicks were fed with adjusted diets as based on wheat and barley for duration of 29 to 42 days. Trial 1 was carried out through an employment of 288 male broiler chicks (Ross 308) in 4 treatments and 4 replicates in a completely randomized design in floor system. Trial 2 was carried out simultaneously with the trial 1 by using 64 male broiler chicks (Ross 308) with 4 treatments and 4 replicates in a system of raising cages. The treatments were comprised of 0, 33.33, 66.66 and 100 percent of vitamin premix. Feed intake and body weight gain in each replicate were calculated within 35 and 42 days, while carcass weight, abdominal fat percentage, the level of Aspartate Amino Transferase (AST) and Alkaline Phosphatase (ALP) enzymes being assessed. Also, after the birds being slaughtered, in order to assess the level of lipid oxidation, thighs of birds were frozen at -20?C for 6 months. According to the results of trial 1 the level of lipid oxidation and AST enzyme were affected by the no vitamin premix containing diet at 36-42 days of age, (P< 0.05). In trial 2, according to the recorded performances, carcass weight and the level of AST enzyme, in birds which were fed with no vitamin premix containing diet (zero level) in comparison with the other treatments and at 36-42 days of age were of significant differences (P < 0.05). Also according to the lipid oxidation and ALP enzyme the birds which were fed with the diet of treatments 1 and 2 in comparison with the other treatments and at 42 days of age were of significant differences (P < 0.05). Considering the results in this study, it seems that there is the possibility of decreasing the level of vitamin premix in finisher diet of broiler chickens in floor raising system up to 33% and up to 66% in cage system common now, without any negative effect on performance and on their frozen meat quality.
hasan kheirkhah; armin towhidi; hossein moravej; mola mohammadi
Abstract
The goal of this study was to determine the effects of ?-Agonist Zilpaterol hydrochloride on growth performance and carcass quality in Ross broiler chicken. Zilpaterol hydrochloride was daily fed at levels 0, 0.2, 0.25, 0.3 mg/kg of Live Body Weight (LBW) from d 25 to 45 of age. Eighty 308 Ross female ...
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The goal of this study was to determine the effects of ?-Agonist Zilpaterol hydrochloride on growth performance and carcass quality in Ross broiler chicken. Zilpaterol hydrochloride was daily fed at levels 0, 0.2, 0.25, 0.3 mg/kg of Live Body Weight (LBW) from d 25 to 45 of age. Eighty 308 Ross female broiler chickens were employed in a 20 d feeding trial of four replicates, five birds per treatment, in a completely randomized design. Birds were individually weighed on d 25 and 48 of the experiment. Blood samples were collected on d 25 and 45. Zilpaterol was withdrawn on d 45 and the birds weighted and slaughtered on d 48. Zilpaterol hydrochloride supplementation significantly decreased the feed intake and improved the Feed Conversation Ratio (FCR) in comparison with the control group (P
Seyed Abdolla Hosseini; Mojtaba Zaghari; Houshang Lotf-allahian; Mahmoud Shivazad; Hossein Moravej
Volume 42, Issue 4 , March 2012, , Pages 329-336
Abstract
An experiment was conducted to determine the appropriate methionine level in broiler breeder’s diet. The treatments consisted of 6 levels of methionine (0.2, 0.25, 0.3, 0.35, 0.4 and 0.45% diets), with 4 replicates of 7 hens each for a duration of 8 weeks and for ages of 28 to 35 weeks. Diets contained ...
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An experiment was conducted to determine the appropriate methionine level in broiler breeder’s diet. The treatments consisted of 6 levels of methionine (0.2, 0.25, 0.3, 0.35, 0.4 and 0.45% diets), with 4 replicates of 7 hens each for a duration of 8 weeks and for ages of 28 to 35 weeks. Diets contained similar levels of protein metabolizable energy. The levels of the other amino acids were taken equal in all the diets to ensure that methionine was chosen as the only limiting amino acid in each dietal treatment. Feed intake, egg production, egg weight, settable eggs, egg mass, feed conversion ratio, egg content and SRBC responses were evaluated during the experimental periods. For finding out the optimum methionine level, Simple Additive Weighted (SAW) and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) methods as well as economic maximum equation were employed. Application of multi attribute decision making system SAW and TOPSIS indicated the appropriate methionine levels as 0.329 and 0.297 percent in the diets, respectively. Total methionine content in the diets, for maximum economic profit (according to feed cost and chick value) was recorded as 0.307. Results finally indicated that using 0.3-0.33 percent methionine in the Arian broiler breeder diets could be approppriately suggested for maximum performance and most economical profit.
sh. hadinia; mahmod shivazad; h. moravej; m. allahyari shahrasb
Abstract
A study was carried out to examine the effect of different levels of Herbal methionine and DL-methionine on the growth performance and immunocompetence of broiler chickens fed on a corn-soybean meal diet. A total of 225 old male broiler chickens (Ross 308) were used as experimental samples in a completely ...
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A study was carried out to examine the effect of different levels of Herbal methionine and DL-methionine on the growth performance and immunocompetence of broiler chickens fed on a corn-soybean meal diet. A total of 225 old male broiler chickens (Ross 308) were used as experimental samples in a completely randomized design. They were randomly assigned to 9 treatments each of 5 replicates in every experimental unit (cage). Treatments included basal diet supplemented increasingly with Herbal methionine and DL-methionine during three growth periods of the birds. Treatments included: T1: basal diet without any additional methionine, T2: basal diet plus 0.07, 0.06, 0.05, T3: basal diet plus 0.15, 0.11, 0.10, T4: basal diet plus 0.22, 0.17, 0.14, T5: basal diet plus 0.29, 0.23, 0.19 % DL-methionine for starter, grower and finisher periods respectively, T6: basal diet plus 0.07, 0.06, 0.05, T7: basal diet plus 0.15, 0.11, 0.10, T8: basal diet plus 0.22, 0.17, 0.14, T9: basal diet plus 0.29, 0.23, 0.19 % Herbal methionine for starter, grower and finisher periods respectively. Feed intake and body weights were recorded during the three experimental periods and then, feed conversion ratios calculated. To investigate the immunocompetence of birds at 28 and 42 days of age, the following two tests were carried out: 1) response to antibody titer against antigen of Sheep Red Blood Cells (SRBC) and 2) response to dilution of 1-choloro 2-3- dinitrobenzene (DNCB). The results revealed that the maximum finisher body weight gain was related to the two highest levels of DL-methionine and Herbal methionine with significant differences as compared with the other treatments, while the highest level of DL-methionine causing minimum finisher body weight gain. Birds fed the basal diet plus 0.15, 0.11, 0.10 % DL-methionine for starter, grower and finisher periods respectively and also, the basal diet plus 0.22, 0.17, 0.14 % Herbal-methionine for starter, grower and finisher periods respectively, exhibited the most desirable performance and immunocompetence. Thus, according to the obtained results, it seems that Herbal methionine could in effect replace DL-methionine.
Seyed Adel Moftakharzade; Hossein Moravej; Mahmoud Shivazad
Volume 42, Issue 2 , October 2011, , Pages 143-151
Abstract
In this research the effect of feeding wheat/ barley based diets supplemented with three commercial enzymes containing xylanase and ?-glucanase activities and including matrix value their on performance and gastrointestinal tract size of broiler chicks was investigated. A total of 260-day-old male broiler ...
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In this research the effect of feeding wheat/ barley based diets supplemented with three commercial enzymes containing xylanase and ?-glucanase activities and including matrix value their on performance and gastrointestinal tract size of broiler chicks was investigated. A total of 260-day-old male broiler chicks (Ross 308) were allocated to 5 treatment groups, with 4 replicates per treatment and 13 birds per replicate in a RCB design. Results showed that only addition of enzymes B and C to wheat/ barley based diet increased average daily feed intake significantly (P
Hasan Shirzadi; Hossein Moravej; Mahmoud Shivazad
Volume 40, Issue 3 , December 2009
Abstract
The effect of feeding barley-based diets (%60) supplemented with four commercial enzymes containing xylanase and ?-glucanase activities were investigated on performance and gastrointestinal size of broiler chicks. The enzyme supplemented diets were compared with unsupplemented barley- or corn-based diets. ...
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The effect of feeding barley-based diets (%60) supplemented with four commercial enzymes containing xylanase and ?-glucanase activities were investigated on performance and gastrointestinal size of broiler chicks. The enzyme supplemented diets were compared with unsupplemented barley- or corn-based diets. A total of 234-day-old male broiler chicks (Ross 308) were allocated to 6 treatment groups, with 3 replicates per each treatment group, 13 birds per replicate pen, and the data analyzed in a randomized complete block design. All the enzymes in supplementation with the barley-based diet significantly (P
iman haj khodadadi; hossein moravej; mahmoud shivazad; mohammad riahi
Volume 40, Issue 2 , September 2009
mehdi ganj khanloo; kamran reza yazdi; gholam reza ghorbani; hossein moravej; mehdi dehghan banadaki; mohammad reza emami
Volume 40, Issue 1 , June 2009
Abstract
This study was conducted to evaluate production response of early lactating cows to rumen protected fats. Twelve (nine multiparous and three primiparous) Holstein cows (26±4 d in milk) were empolyed in a replicated 3×3 Latin Square Design of 21-d periods. Each period consisted of 14 days of adaptation ...
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This study was conducted to evaluate production response of early lactating cows to rumen protected fats. Twelve (nine multiparous and three primiparous) Holstein cows (26±4 d in milk) were empolyed in a replicated 3×3 Latin Square Design of 21-d periods. Each period consisted of 14 days of adaptation and 7 days of sampling. Cows received diets containing either one of two types of protected fats or no supplemental fat. Cows in group 1 (control) were fed Total Mixed Ration (TMR) of 20% corn silage, 20% alfalfa hay, and 60% concentrate mix. Cows in group 2 were fed the TMR containing 3% prilled protected fat (Energizer-10). Cows in group 3 were fed the TMR containing 3.5% Ca salt of protected fat (Magnapac). Intake of Dry Matter (DM), Organic Matter (OM) and Neutral Detergent Fiber (NDF) were decreased by rumen protected fat (P < 0.05) in multiparous cows (DMI: 25.7, 24.1, and 23.9 kg/d for control, prilled fat, and ca salt of fat, respectively); intake of NEL in all the cow population and intake of DM, OM and NDF in primiparous cows were similar for all diets (P > 0.05). Production of milk and 3.5% FCM in primiparous and multiparous cows as well as milk protein, fat, lactose and total solid percentages and yields (kg/d) were not affected by fat supplements (P > 0.05). The BCS and BW changes were similar for all diets in multiparous and primiparous cows (P > 0.05). In multiparous cows, feed efficiency (3.5% FCM/DMI) was higher for cows fed supplemental fat diets (P < 0.05) than for control samples. Fat fed cows were more efficient than those fed with control diet. In primiparous cows supplemental fat did not influence feed efficiency (P > 0.05). Fat supplements did not influence either chewing behavior or total time spent ruminating and eating (P > 0.05). The results indicate that supplementation of early lactating diet with rumen protected fat decreases feed intake and improves milk efficiency but this is not true for primiparous cows.
