Mohsen Afsharmanesh; Maryam Rezaeipour; Mohamad Salarmoini
Articles in Press, Accepted Manuscript, Available Online from 30 May 2021
Abstract
Impact of use from acid propionic, butiric,acitic and probiotic on productive performance of laying hens and some quality parameters of produced eggs, an experiment was conducted using 320 Bowens laying hens, in a 4×2 factorial experiment with four fatty acid levels (no additive, 0.1 % diet,propionic ...
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Impact of use from acid propionic, butiric,acitic and probiotic on productive performance of laying hens and some quality parameters of produced eggs, an experiment was conducted using 320 Bowens laying hens, in a 4×2 factorial experiment with four fatty acid levels (no additive, 0.1 % diet,propionic acid, 0.2 %diet, butyric acid and 0.3 %diet, acetic acid) and two levels of probiotic (0 and 0.01 % diet) In a completely randomized design with eight treatments and five replications and eight birds per replication. The results of production performance showed that the egg weight, feed conversion ratio, production percentage and egg mass parameters, were not affected by the experimental groups. The main effects showed that organic acid supplementation significantly increased feed intake (P<0.05). It was shown that the percentage, diameter and color index of the yolk were not affected but the height of the yolk was improved by each of the supplements (P <0.05). The results of shell quality also showed that specific gravity, shell percentage and shell thickness were not affected by the experimental groups, but diets containing organic acids and probiotic significantly improved shell resistance compared with non-additive group (P <0.05). It could be concluded that organic acid and probiotic supplements with a positive effect on feed consumption, egg weight, egg yolk height and shell resistance, improved production performance and quality of produced eggs.
Amin Saeid; Mohsen Afsharmanesh; Mohamad Salarmoini
Volume 22, Issue 4 , Autumn 2020, , Pages 571-581
Abstract
The effect of copper-methionine chelate and oregano essential oil in comparison to antibiotics on performance, meat quality, immune response and blood biochemical parameters were evaluated using 240 Ross 308 broilers in a 2×2×2 factorial experiment in a completely randomized design with four ...
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The effect of copper-methionine chelate and oregano essential oil in comparison to antibiotics on performance, meat quality, immune response and blood biochemical parameters were evaluated using 240 Ross 308 broilers in a 2×2×2 factorial experiment in a completely randomized design with four replicates and 10 birds per replicate. The treatments included three incremental levels (No additives, 500 mg/kg flavofospholipol antibiotics and 100 mg/kg oregano essential oil of diet) and copper-methionine chelate (0 and 118 mg/kg diet). At the end of the period (42th day), one male bird was sampled from each replicate for exploring meat quality, immune response and blood biochemical parameters. Birds fed a diet containing coppermethionine chelate with flavophospholipol showed higher live weight (P<0.05). Birds fed a diet containing copper-methionine chelates had higher weight gain and better conversion ratio (P<0.05). Also, birds fed diets without additives and antibiotics with and without copper-methionine chelates had more fatty acid oxidation than other groups (P<0.05). At 28 and 42 days of age, the highest immune response (antibody titer) was observed in the copper-methionine chelate group with oregano essential oil (P<0.05). It was shown that oregano essential oil decreased and increased LDL and HDL in the blood (P <0.05), respectively. The results of this study showed that the use of copper-methionine chelate with antibiotics improved production efficiency and the use of copper-methionine chelate and oregano essential oil supplements in poultry diets improve meat quality and increased safety.
MOSLEM ASADI KOROM; Mohamad Salarmoini; Mohsen Afsharmanesh; Yaser Fattahian
Volume 22, Issue 3 , Summer 2020, , Pages 407-415
Abstract
The aim of this study was to evaluate the efficacy of Bacillus subtilis bacteria capable to produce phytase enzyme on improving broiler chicken performance and to evaluate its effect on gastrointestinal organs, and tibia strength in broiler chickens. This experiment was done using 200 one-day old broiler ...
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The aim of this study was to evaluate the efficacy of Bacillus subtilis bacteria capable to produce phytase enzyme on improving broiler chicken performance and to evaluate its effect on gastrointestinal organs, and tibia strength in broiler chickens. This experiment was done using 200 one-day old broiler chicks (Ross 308), in a completely randomized design with 5 treatments, 4 replicates and 10 chicks per replicate for 42 days. The treatments include: 1) positive control diet containing sufficient phosphorus level; 2) negative control diet with 30% less phosphorus; 3) negative control diet supplemented with phytase enzyme; 4) negative control diet supplemented with a commercial probiotic; 5) negative control diet supplemented with Bacillus subtilis SH17-3. Feeding broiler chickens with a diet containing Bacillus subtilis bacteriaSH17-3 significantly reduced feed intake and mean body weight gain (BWG) in the total rearing period (P<0.05). Feeding broiler chickens with a diet containing phytase enzyme significantly increased feed intake and BWG (P<0.05). The strength of tibia was significantly increased in birds received phytase enzyme, compared to other groups (P<0.05). Based on the results the use of phytase enzyme in diets with phosphorus deficiency, improves performance in broilers; but Bacillus subtilis bacteria SH 17-3 could not be a good alternative for probiotic and also phytase enzyme.
Mahsa Rasa Ezadi; Mohamad Salarmoini; Mohsen Afsharmanesh; Hadi Tavakoli; Mohammad khajeh Bami
Volume 21, Issue 4 , Winter 2020, , Pages 511-519
Abstract
Effect of different levels of hydroalcoholic extract of Allium hirtifolium and flavophospholipol antibiotic on growth performance, carcass characteristics, meat quality, and immune responses was studied using 200 day-old chickens, Ross 308 broilers with five treatments, four replicates and ...
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Effect of different levels of hydroalcoholic extract of Allium hirtifolium and flavophospholipol antibiotic on growth performance, carcass characteristics, meat quality, and immune responses was studied using 200 day-old chickens, Ross 308 broilers with five treatments, four replicates and 10 chickens per each replicate with completely randomized design. The experimental treatments were included basal diet withno additives (control group), and the basal diet containing hydroalcoholic extract of Allium hirtifolium (150, 300, 450 ml/kg diet) and flavophospholipol antibiotic (500 mg/kg diet). During the experimental period, birds fed with diet containing 450 ml/kg Allium hirtifolium extract had a higher weight gain than control birds (P<0.05). The effect of treatments on carcass characteristics was not significant. Themalondialdehyde value of legs muscles in birds fed with different levels of Allium hirtifolium extract was lower than the control group (p<0.05). The meat water holding capacity and drip loss in chickens fed with diet containing 450 ml per kg of Allium hirtifolium extract were higher and lower than birds receiving antibiotic respectively (p<0.05). The antibody titer against sheep red blood cells in chickens fed withdiet containing 450 ml per kg diet of Allium hirtifolium extract was higher than control birds or birds receiving antibiotic (p<0.05). According to the results of the present experiment, using 450 ml/kg diet of Allium hirtifolium extract could improve performance, meat quality and immune responses of broiler chickens, and can be used as a good replacement for antibiotic growth promoters.
Hadi Karimi-Zarchi; Mohamad Salarmoini; Mohsen Afsharmanesh
Volume 21, Issue 3 , Summer 2019, , Pages 349-358
Abstract
This study was carried out to evaluate the effect of different levels of dietary crude protein and protease enzyme on growth performance, carcass characteristics, and protein digestibility in Japanese quails. Four hundred fifty day-old quails were randomly distributed into nine experimental groups in ...
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This study was carried out to evaluate the effect of different levels of dietary crude protein and protease enzyme on growth performance, carcass characteristics, and protein digestibility in Japanese quails. Four hundred fifty day-old quails were randomly distributed into nine experimental groups in a completely randomized design with 3 × 3 factorial arrangement including 3 levels of protein (18, 20 and 22%) and 3 levels of protease enzyme supplementation (0, 200 and 400 mg/kg) with five replicates and 10 birds per replicates. In 1 to 21 days of age, the highest weight gain and feed intake were achieved in birds fed diet with 22% crude protein (P<0.05). Also, birds fed with the diet supplemented with 200 ppm protease enzyme showed higher feed intake and weight gain, in comparison to the birds fed no enzyme supplemented diet (P>0.05). But, the best feed conversion ratio was seen in birds fed a diet contained 400 ppm enzyme. In 22 to 35 days of age, different dietary treatments have no significant effect on growth performance. Carcass percentage of quails fed with diets contained 20 and 22% CP was significantly higher than those fed 18% CP diet (P<0.05). Also, enzyme supplementation had beneficial effects on the carcass, breast, and thigh relative weights (P<0.05). In the 13-15 days period, CP digestibility coefficient was significantly decreased by increasing the CP level from 18 or 20 to 22%. Also, protease enzyme supplementation at 200 ppm level had significantly a positive effect on CP digestibility (P<0.05). It could be concluded that the optimal dietary CP level for growing Japanese quails for 1- 21 and 22-35 days of the growing period is 22 and 18%, respectively. Also, dietary supplementation with protease enzyme at 200 ppm level could be beneficial at 1 to 21 days of age.