جستجوی مقالات مرتبط با کلیدواژه "performance" در نشریات گروه "بیوتکنولوژی و ژنتیک گیاهی"

This study was conducted to investigate the effects of zinc hydroxide and zinc glycine and their mixtures on performance, blood and immune parameters, liver enzymes and expression of interleukin-6 and interferon gamma genes in broiler chickens.

Birds fed on a Corn-Soybean. The study was conducted in a completely randomized design with a 3×3 factorial arrangement with 9 treatments and 4 replications, each replication containing 15 birds. (540 Ross 308 broiler chickens). The experimental diets included the control diet (without zinc hydroxide and zinc glycine) and the levels of 50 and 100 mg / kg zinc hydroxide and zinc glycine.

The results showed that the use of mixture of zinc hydroxide and zinc glycine increased feed intake and weight at the end of broiler chickens breeding (P<0.05). Among the experimental groups, 100 zinc hydroxide (mg/kg of feed) had the blood and immune parameters (P<0.05). The use of zinc hydroxide and zinc glycine in the diet of broiler chickens has significant effect on liver enzyme (P<0.05). The different levels of zinc hydroxide and zinc glycine decreased the expression of interleukin-6 and increased gamma interferon liver genes.ConclusionsIn general, it can be stated that the mixture containing 100 zinc hydroxide (mg/kg of feed) has the most effect on performance improvement, blood and immune parameters and100 zinc hydroxide and zinc glycine (mg/kg of feed) expression of liver genes in broiler chickens.The results showed that the use of mixture of zinc hydroxide and zinc glycine increased feed intake and weight at the end of broiler chickens breeding (P<0.05). Among the experimental groups, 100 zinc hydroxide (mg/kg of feed) had the blood and immune parameters (P<0.05). The use of zinc hydroxide and zinc glycine in the diet of broiler chickens has significant effect on liver enzyme (P<0.05). The different levels of zinc hydroxide and zinc glycine decreased the expression of interleukin-6 and increased gamma interferon liver genes.

In general, it can be stated that the mixture containing 100 zinc hydroxide (mg/kg of feed) has the most effect on performance improvement, blood and immune parameters and100 zinc hydroxide and zinc glycine (mg/kg of feed) expression of liver genes in broiler chickens.

This study was conducted to investigate the effects of green tea and rosemary extracts and their mixtures on growth performance, carcass characteristics, blood biochemical parameters, oxidative stability of meat and expression of interleukin-6 genes and interferon gamma in broiler chickens.
 
 

Birds fed on a Corn-Soybean. The study was conducted in a completely randomized design with a 3 × 3 factorial arrangement with 9 treatments and 4 replications, each replication containing 15 birds. (540 Ross 308 broiler chickens). The experimental diets included the control diet (without extracts) and the levels of 0.5 and 1 g / kg extracts of green tea and rosemary.
 

The results showed that the use of mixture of rosemary extracts increased feed intake, increased weight and improved feed conversion ratio at the end of broiler chickens breeding (P<0.05). Among the experimental groups, 0.5 rosemaryextract (g/kg of feed) had the best production index (P<0.05). The use of these extracts in the diet of broiler chickens has significant effect on liver enzyme (P<0.05).These exteracts reduce the amount of malondialdehyide produced in the drumsticks of broiler chickens (P<0.05). The different levels of these plant compounds increased the expression ofinterleukin-6 and gamma interferon liver genes.
 

In general, it can be stated that the mixture containing 0.5 rosemary extract (g/kg of feed) has the most effect on performance improvement, oxidative stability of meat and expression of liver genes in broiler chickens.

Evaluation of performance was carried out in Satureja mutica Fisch &C.A, Meyand S.isophylla Rech, f. under dry farmingusing a 3 replicated randomized complete block design in Damavand, Iran. Significant differences were observed between the species for studied traits including plant dry weight, essence yield, canopy diameter, plant height, branch number and leaf length, with higher amounts for S.mutica. Also, accessions of S.mutica showed significant differences for essence yield, leaf width, leaf length, plant height and number of branches. Mean comparison indicated the highest essence content (3.86%) for one of the studied accession mu1Kh, the highest branch number for accession mu2Kh and the highest plant height and leaf length for accession mu3Gl. Also, significant positive correlations were observed between the traits, such as plant dry weight, with plant canopy diameter and branch number. Three components were resulted from principal components analysis, showing 95% of the total variation in which plant dry weight, essence content and plant canopy diameter were important, while in the second component leaf dimensions and in the third component, number of branches determined the most variation. According to cluster analysis, the accessions were classified into three groups. S. isophylla was located in a separate group. Also, accessions mu1Kh and mu2Kh of S .mutica were located in one group and accessions mu2Gl, mu3Gl and mu1Mz in another group. As a conclusion, mu1Khof S. mutica could be proposed for cultivation under dry farming conditions in Damavand.

According to the study quantitative and qualitative characteristics of grain sorghum (var.Spideh) performance, this seed was planted in research field of the Islamic Azad University Meybod branch in spring of 2009 in split plot design based on randomized complete blocks with three replication. Three planting dates (6/5, 6/20, 7/5) were selected as main plots and densities of 75, 100, 150 thousand plants per hectare were assigned sub-plots. In this test traits of yield, 1000 kernel weight, number of seed per panicle, number of panicles in square meter, harvest index and protein percentage of seed were evaluated. The results of these tests showed that the effect of different plant density on grain yield, 1000 kernel weight, harvest index and grain protein content had a significant difference, and with increased density, 1000 kernel weight, harvest index, number of seed per panicle and grain protein showed significantly reduced, but yield increases with increased density. The results showed that 5/7 date of planting was better than two other dates and superior yield rate of most 2/76 tons per hectare planting 7/5 was found between density. The density above the most suitable plant was 150 thousand hectares. It would be better to plant sorghum (Sapideh variety) in the range between 5th July and 23rd July in Meybod and similar area.