Effect of different levels of cinnamon powder and Flavophospholipol antibiotic on performance and carcass characteristics of broiler chickens
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article
2015
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This study was carried out to investigate the effects of different levels of cinnamon powder (CNP) and with antibiotic (flavophospholipol) on performance and carcass characteristics in broiler chicks for 42 days using a completely randomized design. A total of 200 one-day-old male broiler chicks (Ross 308) were randomly assigned to 5 treatments, 4 replicates and 10 chicks per replicate. The experimental treatments were the basal diet (BD), BD + 0.3% CNP, BD + 0.4% CNP, BD + 0.5% CNP and BD + flavophospholipol. Feed intake, body weight gain, feed conversion ratio and carcass characteristics were measured. In grower period, there were significant differences among treatments for feed intake and broilers fed with two levels of 0.3 and 0.4% CNP had higher feed intake as compared to the antibiotic and control fed birds (P<0.05). No significant differences were observed among the treatments for body weight gain and feed conversion ratio (P>0.05). The abdominal fat pad weight of broilers fed the highest CNP level was lower than that of the birds fed the antibiotic and control diets (p< 0.05). This study showed that inclusion of CNP in broiler diets had not remarkable effects on performance, but adding 0.5% CNP significantly decreased the abdominal fat pad and hence can be a good factor for meat quality improvement in broiler chicks.
Research Letter in Poultry Science
Urmia University
2
v.
1
no.
2015
1
8
https://rlps.urmia.ac.ir/article_20043_665aa1f9e70a5bf6aba75ee172fdc961.pdf
Effect of different levels of Aloe Vera gel and neomycin on performance, some carcass characteristics, and physical and chemical meat quality of broiler chicks
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article
2015
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This experiment was conducted to investigate the effect of different levels of Aloe vera gel and an antibiotic (neomycin) on performance, some carcass characteristics, and physical and chemical quality of meat in broiler chicks. One hundred and eighty one-day-old male broiler chicks (Ross 308) were used in this experiment. The experiment was performed during 6 weeks based a completely randomized design with 5 treatments, 3 replicates for each treatment and 12 chicks per replicate. Treatments were the different dietary levels of Aloe vera gel (0.0, 1.5, 2 and 2.5 percent) and neomycin (0.2 g/kg).The results of the experiment showed that the chickens fed the 2% Aloe vera gel had the lower feed consumption as compared to the chickens of other treatments during the whole experimental period (P<0.05). The breast dry matter content was higher in the chickens fed 2% Aloe vera gel than the chickens of control treatment (P<0.05). moreover, the breast meat protein of chickens fed the different levels of Aloe vera gel (1.5, 2 and 2.5 %) and neomycin (0.2 g/kg diet) was higher than that of birds in control treatments (P<0.05). The addition of 2.5% Aloe vera gel significantly increased the dry matter and fat contents of thigh meat as compared to neomycin and control diet (P<0.05). The thigh meat protein of chickens fed the 1.5 and 2% gel was significantly greater than that of control and neomycin fed birds (P<0.05). Furthermore, thigh meat hardness, gumminess and chewiness of chickens fed the 1.5, 2 and 2.5 Aloe vera gel were higher than those of control diet and neomycin fed birds (P<0.05). The compression test on breast meat showed that feeding 2.5% Aloe vera gel increased the meat hardness as compared to control treatment (P<0.05). It was concluded that dietary addition of Aloe vera gel does not affect the physical characteristics of thigh and breast meats, but improves the performance and chemical (dry matter, fat and protein) characteristics of breast and thigh.
Research Letter in Poultry Science
Urmia University
2
v.
1
no.
2015
9
20
https://rlps.urmia.ac.ir/article_20044_648f04b629b570fcaf709510c9aa1e91.pdf
The effects of dietary zinc oxide nanoparticles on some reproductive parameters of male quail
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article
2015
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In present study, the effect of zinc oxide nanoparticles (ZnO NP) on reproductive performance of male Japanese quail was studied. In this study, one hundred Japanese quails were used based a completely randomized design in 5 treatments and each treatment was repeated 5 times. Each repeated included three females and one male quails. The experiment was performed during 20 weeks. Experimental treatments included negative control (0 and 0 mg/kg), positive control (30 and 60 mg/kg commercial zinc oxide) and different dietary levels (10 and 20 mg/kg), (30 and 60 mg/kg) and (90 and 180 mg/kg) of ZnO NP respectively during growth ((from day one to day 42 of age) and production (from day 42 of age to week 20 of age) periods. The results showed that lack of dietary Zn causes the decreased body weight, testis weight, daily sperm production and serum testosterone concentration (P<0.05). The consumption of 180 mg/kg of nanoparticles increases the daily sperm production, serum testosterone concentration and body weight of the birds (P<0.05). There were no significant differences between the positive control and the quails fed 20 ml/kg of ZnO NP for reproductive performance and testosterone concentration .Increasing the ZnO NP level to 180 mg/kg leads to significant increase of reproductive performance in male Japanese quail. In conclusion, the consumption of the 20 mg/kg of ZnO NP causes the improved reproductive performance of male quails and hence can be a good replacement for 60 mg/kg of commercial zinc oxide in the diet.
Research Letter in Poultry Science
Urmia University
2
v.
1
no.
2015
21
31
https://rlps.urmia.ac.ir/article_20045_2b11ba11c7a25e1ba43cb43414461f21.pdf
Effect of early feeding with corn soybean diets versus semi solid diets on performance, gastrointestinal development and carcass characteristics in broiler chickens
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2015
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An experiment was carried out to evaluate the effect of early feeding with corn-soybean meal starter diet and semi-solid hydrated supplements on yolk suck utilization, performance and carcass characteristics in broiler chicken. The treatments were the corn-SBM diet immediately after hatch (control), and feeding Omaj or a semi Oasis product for 16 or 32 h after hatch. The results showed that chicks fed the semi Oasis for 16 h had greater (P<0.05) feed intake than those fed the semi Oasis or Omaj for 32 h. Early feeding of Omaj and semi Oasis for 32 h resulted in lower body weight than control treatment at all ages. At 42 days of age, the highest body weight was belonged to birds fed with semi Oasis diet for 16 h, however, had no significant differences with that of the control birds. Feed conversion ratios were similar in all experimental groups. Carcass indices were not affected by dietary treatments, except for breast weight that was greater (P<0.05) in chicks fed with semi Oasis diet for 16 h than control chicks and those fed with Omaj or semi Oasis for 32 h. Early feeding of Omaj for 16 h resulted to longer (P<0.05) small intestine than the birds fed Omaj or semi Oasis for 32h.In conclusion, feeding semi solid hydrated supplements such as Omaj and semi Oasis for 16 h after hatch could be useful for day old broiler chickens transformation.
Research Letter in Poultry Science
Urmia University
2
v.
1
no.
2015
32
43
https://rlps.urmia.ac.ir/article_20046_7cf436066120cfa2c41149185390d6d0.pdf
The effect of turmeric rizhome powder on egg quality and quantity characteristics of West Azerbaijan province native hens
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2015
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Two hundred and forty native hens of West Azerbaijan (23 weeks old) were used in this research. These birds were divided between 4 groups and the hens of each group were randomly put in 6 replicate pens. All the birds were fed the same diets but received different levels of 0, 0.25, 0.50 and 1 percent turmeric rhizome powder. The birds were adapted to the experimental diets at the beginning the experiment for two weeks and then their egg quantity and quality indices were recorded for three weeks. The egg weight of 0.5 % fed birds was significantly higher than that of 0.25 and 1 % fed birds at week 26 of age (P<0.05). All the turmeric fed birds had the significantly higher shell thickness and stiffness as compared to control birds at the last week of the experiment (P<0.05). Moreover, the yolk color of eggs from 0.5 and 1 % fed birds was darker than those of birds in other treatments at week 26 of age (P<0.05). At weeks 27 and 28 of age, the yolk color of the eggs from the turmeric fed birds were higher than those of control ones(P<0.05). Furthermore, the albumin height of eggs of 1% fed birds was significantly greater than those of0.25 % turmeric or control fed birds (P<0.05). Totally, the use of turmeric darkens the yolk, improves the shell thickness and stiffness, and increases the albumen height.
Research Letter in Poultry Science
Urmia University
2
v.
1
no.
2015
44
52
https://rlps.urmia.ac.ir/article_20047_5c4967c9f0ad717f6b28f01436a9bfc4.pdf
Estimation of apparent protein digestibility of Sardari and Azar 2 wheat cultivars with and without enzyme in caged broiler chickens
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article
2015
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The present study was conducted to estimate the apparent protein digestibility of two varieties, including Sardari and Azar 2 in the presence or absence of enzyme supplementation (Grindazym GP 15000) in broiler chickens. One hundred and eighty fourteen-day-old broiler chickens (Cobb 500 of mixed sex) were purchased and distributed randomly into 6 three-storey cage. Diets were a basal diet (corn-soybean meal-based diet) and experimental diets contacting 40% of basal diet and 60% of the ground wheat cultivar which fed with and without the addition of enzymes. Each diet was fed to 3 replicates each having 10 birds in a factorial experimet based a completely randomized design during the grower (14 to 20 days) and finisher (30 to 36 days) periods. Wheat cultivars used in the present study were prepared from the Kurdistan province. The apparent protein digestibility of Sardari and Azar 2 cultivars during grower and finisher periods were 75.63%, 76.19% and 64.47%, 69.66%, respectively. Sardari cultivar had higher apparent protein digestibility than Azar 2 cultivar (P<0.05). Enzyme supplementation did not increase the apparent protein digestibility in both wheat cultivars (P>0.05). During the grower period, supplementation the basal and experimental diets with enzyme decreased the feed conversion ratio significantly (P<0.05). It can be concluded that addition of enzymes to the diets containing wheat, improve the feed conversion ratio during the grower period in both Sardari and Azar 2 cultivars, however it did not have significant effects on the apparent protein digestibility and performance of broiler chickens.
Research Letter in Poultry Science
Urmia University
2
v.
1
no.
2015
53
62
https://rlps.urmia.ac.ir/article_20048_afbfe98b146860198c5cfdd4f485ef4b.pdf
The effect of in ovo injection of L- Glutamine and its dietary supplementation on performance, carcass traits and immune response of broiler chickens
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2015
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This study was conducted to evaluate the effects of in ovo injection of L- Glutamine (Gln) and its supplementation on performance, carcass traits, length and partial weights of different parts of small intestine and cellular and humoral immune responses of broiler chickens. For this purpose, 40 mg Gln inoculated into amniotic fluid of the 17.5 day- old developing embryos. After hatch, 160 one-day old broiler chicks were selected and then were fed with diets containing 0, 0.5, 1 and 1.5% Gln from day one to day 41 of age. This experiment was carried out in a completely randomized design with 4 treatments, 4 replicates and 10 chicks per each. The results of present study showed that supplementation 1% Gln significantly improved the body weight gain of chickens during the total experimental period (P<0.05). The highest breast meat and carcass yield was seen by 1% Gln supplementation (24.06 and 64.16 %, respectively). The highest partial weights of different small intestine parts (duodenum, jejunum, ileum and sum of them) was observed by 1.5% Gln supplementation (P<0.05). Moreover, addition of 1% Gln produced the highest level of antibody production against sheep red blood cell (P<0.05). The IgM production was not affected with Gln supplementation (P>0.05). In conclusion, in ovo injection of 40 mg Gln into amniotic fluid of the 17.5 one-day old developing embryos and supplementation 1% Gln after hatch can improve the performance, carcass traits and cellular and humoral immune responses of broiler chickens.
Research Letter in Poultry Science
Urmia University
2
v.
1
no.
2015
63
73
https://rlps.urmia.ac.ir/article_20049_5ba3fbb93eeefcc2c789310e154161fc.pdf
Effects of acidifier (Globacid) and enzyme addition in Japanes quails fed wheat based diet
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2015
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The present study was conducted to investigate the effects of Globacid (Optimum combination of lactic, formic, propionic and acetic acids on a special carrier) and different levels of Rovabio enzyme in wheat based diet on performance and immune system function of quail chicks. In this experiment, 240 one-day old Japanese quail chicks (mixed sexes) were randomly assigned to a 2×3 factorial arrangement in a completely randomized design. Factors included 2 level of Globacid (0 and 1000 mg per kg) and three levels of enzyme (0, 250 and 500 mg per kg). Each treatment group consisted of 4 replicates of 10 birds. The results of the experiment showed that live weight, weight gain, feed conversion ratio and immune response were improved by adding Globacid to quail diets (P<0.05). Furthermore, there were significant difference between the different dietary levels of enzymes for performance and (P<0.05) and the best performance was observed by consumption of 500 mg. It was concluded that use of 250 mg/kg enzyme could not remove the negative effect of wheat NSP’s wherase the higher level (500 mg/kg) totally removed these negative effects. Moreover, the concomitant use of both enzyme and organic acids had the best effects on performance of quails fed wheat based diets.
Research Letter in Poultry Science
Urmia University
2
v.
1
no.
2015
74
86
https://rlps.urmia.ac.ir/article_20050_531dea01836a0dc7ae91416638b30d3d.pdf