Mozhgan Mazhari; Zahra Ranjbari nasab
Volume 24, Issue 2 , July 2022, , Pages 165-175
Abstract
Effect of organic selenium and chromium supplementation on growth performance, carcass characteristics, and meat quality of broiler chickens was studied using 200 one-day-old Ross 308 male broiler chickens in a 2×2 factorial arrangements with 4 treatments, 5 replicates and 10 birds each. Experimental ...
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Effect of organic selenium and chromium supplementation on growth performance, carcass characteristics, and meat quality of broiler chickens was studied using 200 one-day-old Ross 308 male broiler chickens in a 2×2 factorial arrangements with 4 treatments, 5 replicates and 10 birds each. Experimental treatments were including 2 levels of Se-Met (0 and 0.4 mg/kg diet) and 2 levels of Cr-Met (0 and 0.4 mg/kg diet). At the end of trial, two birds per replicates were randomly selected and slaughtered to determine carcass traits and meat quality. Cr-Met supplementation increased feed intake during the grower and the whole period (P<0.05). The birds receiving 0.4 mg/kg of Se-Met and Cr-Met diets had the highest body weight gain (BWG) and the lowest feed conversion ratio (FCR) in the grower, finisher and whole periods (P<0.05). The highest BWG and the lowest FCR in whole period belonged to the birds fed by both elements (P<0.05). The highest relative weight of carcass and breast was observed in birds fed with Se-Met and Cr-Met (P<0.05). The highest relative weight of carcass was seen in birds fed both elements (P<0.05). Addition of Se-Met and Cr-Met increased the moisture and water holding capacity and decreased the cooking loss and malondialdehyde (MDA) content of breast meat (P<0.05). The interaction effect of treatments on meat quality was significant, as the highest water holding capacity and the lowest cooking loss and MDA was seen in broilers fed by both Cr-Met and Se-Met (P<0.05). According to the results of this experiment, it is suggested to add Se-Met and Cr-Met to diet to improve growth performance, carcass traits, meat quality and stability of broiler chickens.
Fatemeh Basiriyan; Omidali Esmaeilipour; Mozhgan Mazhari; Nemat Ziaei
Volume 23, Issue 4 , January 2022, , Pages 573-581
Abstract
This experiment was performed to investigate the effects of Ziziphus jujube and Elaeagnus angustifolia powder on growth performance, blood metabolites and meat quality of broiler chickens at high temperature conditions. In this experiment, 160 one-day-old male broiler chickens of Ross 308 were used in ...
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This experiment was performed to investigate the effects of Ziziphus jujube and Elaeagnus angustifolia powder on growth performance, blood metabolites and meat quality of broiler chickens at high temperature conditions. In this experiment, 160 one-day-old male broiler chickens of Ross 308 were used in a completely randomized design with 4 treatments and 4 replicates of 10 birds per each. Experimental treatments were including: 1- control (basal diet), 2- basal diet + 0.75% Ziziphus jujube, 3- basal diet + 0.75% Elaeagnus angustifolia powder, and 4- basal diet + combination of Ziziphus jujube and Elaeagnus angustifolia powder (0.75% of each). At day 25 of age, with the onset of heat stress, the chicks were exposed to 34±2 ° C for eight hours daily from 9 a.m. to 5 p.m. The results showed that the effect of treatments on growth performance traits was not significant (P≥0.05). Also, the relative weight of carcasses and internal organs except liver were not affected by experimental treatments. The lowest relative liver weight was observed in the control group (P≤0.05). The addition of Ziziphus jujube and Elaeagnus angustifolia in the diet significantly increased glutathione peroxidase and decreased blood glucose compared to the control group (P≤0.05). The highest amount of water holding capacity and lowest dripping loss and cooking loss were observed in birds fed Ziziphus jujube mill and Elaeagnus angustifolia (P≤0.05). Based on the results of the current experiment, although the inclusion of 0.75% of Ziziphus jujube and Elaeagnus angustifolia had no effect on growth performance of broiler chicken, but improved blood metabolites and meat quality traits.
Hamid Molaiee moghbeli; Mozhgan Mazhari; Omidali Esmaeilipour; Hossein Doomari
Volume 22, Issue 4 , December 2020, , Pages 633-644
Abstract
Effect of different oil sources on growth performance, carcass characteristics and blood metabolites of broilers was studied using 160 male Ross broiler chickens in a completely randomized design with 4 treatments, 4 replicates and 10 birds each. Treatments included: 1) basal diet plus soybean oil, ...
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Effect of different oil sources on growth performance, carcass characteristics and blood metabolites of broilers was studied using 160 male Ross broiler chickens in a completely randomized design with 4 treatments, 4 replicates and 10 birds each. Treatments included: 1) basal diet plus soybean oil, 2) basal diet plus sunflower oil, 3) basal diet plus canola oil and 4) basal diet plus sesame oil. Effect of different oil sources on feed intake was not significant in different periods. In grower, finisher and whole periods, sesame and canola oil fed birds showed better weight gain and feed conversion ratio compared to other oil sources. The food cost was significantly higher for diets including sesame oil compared to others and birds fed sesame oil had lower profit than canola and soybean oil fed birds (P<0.05). The relative weight of carcass, breast and thigh was higher in broiler fed with sesame and canola oil (P<0.05). The blood cholesterol decreased significantly in sesame oil treatment (P<0.05). Considering the lower price and higher profit of canola oil containing diets compared to sesame oil and also better performance of birds fed sesame and canola oil, we would recommend using canola oil in broiler diets.
Maliheh Kamali; Mozhgan Mazhari; Omidali Esmaeilipour; Rouhollah Mirmahmoudi
Volume 19, Issue 3 , November 2017, , Pages 645-656
Abstract
To investigate the effect of different levels of Allium ampeloprasum powder (AP) and flavophospholipol (FP) on growth performance, blood metabolites and small intestine morphology of broilers, an experiment was conducted on 200, day-old male broiler chicks (Ross 308) in a completely randomized design ...
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To investigate the effect of different levels of Allium ampeloprasum powder (AP) and flavophospholipol (FP) on growth performance, blood metabolites and small intestine morphology of broilers, an experiment was conducted on 200, day-old male broiler chicks (Ross 308) in a completely randomized design with 5 treatments, 4 replicates and 10 chicks per each. The treatments consisted of: corn-soybean meal as basal diet (BD), BD + 0.02% flavophospholipol, BD + 0.5% AP, BD + 075% AP and BD + 1% AP. The results showed that feed intake (FI) increased by FP treatment over all periods (P<0.01). Addition of FP, increased WG in starter phase (P<0.05). In grower and whole period the best WG and FCR was observed for FP, 1 and 0.75% AP (P<0.01) treatments. Blood glucose, triglycerides and cholesterol were decreased by AP significantly (P<0.05). Heterophil to lymphocyte ratio decreased significantly by 1% AP compared to control group (P<0.05). Villi height and villi height to crypt depth ratio increased by FP and AP supplementation (P<0.05). Based on results, 0.75 and 1% AP had positive effect on growth performance, immunity and small intestine health of broilers and with regards to restriction on the use of antibiotic in broiler ration, AP can be used to improve growth performance and immunity of broilers.
Zahra Amiri Ghanatsaman; Omidali Esmaeilipour; Rouhollah Mirmahmoudi; Mozhgan Mazhari
Volume 18, Issue 1 , April 2016, , Pages 119-128
Abstract
This study was conducted to investigate the effect of Mentha piperita (PP) and Melissa officinalis (MP)powder on performance, apparent digestibility of fat and protein and blood parametersof broiler chicks subjected to heat stress. 200-day-old male Ross broiler chicks were assigned to a completely randomized ...
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This study was conducted to investigate the effect of Mentha piperita (PP) and Melissa officinalis (MP)powder on performance, apparent digestibility of fat and protein and blood parametersof broiler chicks subjected to heat stress. 200-day-old male Ross broiler chicks were assigned to a completely randomized design with five dietary treatments and four replicates. The experimental treatments were: 1. Control group (diet without feed additive), 2. Diet supplemented with 0.5 percent PP, 3. Diet supplemented with 1 percent PP, 4. Diet supplemented with 0.2 percent MP and 5. Group supplemented with 0.4 percent MP. The experimental diets were offered to the chicks from 25 to 42 day of age. During the experiment, the birds were kept at 34°C ± 2 for 8 hours (9.00 to 17.00). The diets supplemented by Mentha piperita and Melissa officinalis powder had not significant effect on feed intake, but higher body weight gain (BWG) and lower feed conversion ratio (FCR) observed in the birds fed diet supplemented with one percent of PP. Apparent digestibility of dry matter and crude fat were not affected by the dietary treatments, but the digestibility of protein was increased (P<0.05) in birds fed on diet supplemented with one percent of PP. Dietaryinclusion of PP and MP had no effect on blood parameters. It could be concluded that addition of PP at the level of one percent of broilers diets during heat stress, improve protein digestibility and growth performance.
Mahdiyeh Soltani; Mozhgan Mazhari; Omidali Esmaeilipour
Volume 17, Issue 2 , October 2015, , Pages 291-300
Abstract
Effect of probiotic (Clostat) levels on the performance and immune response of heat stressed broilers, was evaluated in a completely randomized design on 144 day-old male Ross broiler chicks with four treatments and four replicates (nine birds each). Experimental diets were consisted in four levels of ...
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Effect of probiotic (Clostat) levels on the performance and immune response of heat stressed broilers, was evaluated in a completely randomized design on 144 day-old male Ross broiler chicks with four treatments and four replicates (nine birds each). Experimental diets were consisted in four levels of probiotic (0, 0.05, 0.1 and 0.2). Birds were raised under normal condition till 25 days of age and then were exposed to heat stress (34±2°C for eight hours/day) till the end of trial. The results showed that the effect of probiotic on feed intake was not significant, while birds receiving 0.05 and 0.1 percent probiotic had more body weight gain (P<0.05) compared with control birds. Feed conversion ratio (FCR) was better with 0.1 percent probiotic. Increasing probiotic levels, increased relative weight of carcass, breast meat and liver (P<0.05). Blood cholesterol concentration was decreased by probiotic levels (P<0.01). Heterophil and heterophil to lymphocyte ratio was decreased and glutathione peroxidase increased by probiotic addition. It is concluded that dietary supplementation of 0.1 percent probiotic may improve broiler growth performance and immunity under heat stress condition.