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Jafaryan H.,Gonbad Higher Education Center | Mehdi T.M.,Gorgan University of Agricultural Sciences and Natural Resources
AACL Bioflux | Year: 2010

In this study five species of probiotic bacillus as bacterial blend under the commercial title of Protexin aquatic were used for bioencapsulation of Artemia urmiana (Gunther, 1899). This experiment was conducted in a completely random design. A. urmiana naupli I was used as a vector to carry probiotic bacillus to digestive tract of Huso huso (Linnaeus, 1758) larvae. Nauplii with three concentrations of bacteria, 1×10 5, 2×10 5 and 3×10 5 bacteria per milliliter in suspension of broth for 10 hours were bioencapsulated and beluga larvae were fed by them. Beluga larvae were fed 50 percent of their body weight for 6 times a day. The control treatment was fed by unbioencapsulated artemia nauplii. The results indicated that the probiotic bacillus could influence on growth and feeding parameters in beluga larvae. The final body weight and specific growth rate (SGR) for weight in experimental treatments had significant difference in comparison to control treatment (P<0.05). In experimental treatments the Food efficiency was increased significantly in comparison with control. The probiotic bacillus had significant positive effects on conversion efficiency ratio (CER), Daily growth coefficient (DGC) and average weight gain (AWG) in comparison to control treatment (P<0.05). Also the relative food intake (RFI) significantly decreased (P<0.05) while Protein gain (PG) and Energy retained as protein (PD.KJ day -1) significantly increased (P<0.05).

Begli H.E.,Gorgan University of Agricultural Sciences and Natural Resources | Zerehdaran S.,Gorgan University of Agricultural Sciences and Natural Resources | Hassani S.,Gorgan University of Agricultural Sciences and Natural Resources | Abbasi M.A.,Animal Science Research Institute of Iran | Ahmadi A.K.,Gonbad Higher Education Center
Iranian Journal of Biotechnology | Year: 2010

The objective of the present study was to investigate the polymorphism of prolactin promoter and cytosolic phosphoenol pyruvate carboxykinase (PEPCK-C) intron 3 to exon 3 regions, and its association with economic traits in native fowl of Yazd province. These traits consisted of body weight at 8 (BW8) and 12 (BW12) weeks of age, age at sexual maturity (ASM), weight at sexual maturity (WSM), mean egg weight at 28, 30, and 32 weeks (MEW), and the number of eggs during the first 12 weeks of laying period (EN). Blood samples were collected from 159 pedigreed fowl at native fowl breeding center of Yazd province, and DNA was extracted from the samples according to salting out protocol. PCR amplification together with restriction fragment length polymorphism was used to identify different genotypes of prolactin and PEPCK-C genes. The effect of prolactin genotypes on economic traits was analyzed using general linear model. A 24-bp indel (insertion or deletion) at nucleotide position (np) 358 was identified, but no polymorphism was found for PEPCK-C. Based on our results, the frequency of I and D alleles were 0.761 and 0.239, respectively. Frequencies of II, ID and DD genotypes were 0.566, 0.389 and 0.044, respectively. Genotypes II and ID were significantly associated with incresased EN (P<0.01). Meanwhile, the genotypes of the 24-bp indel site were not significantly associated with BW8, BW12, ASM, WSM and MEW (P> 0.05). The results of current study showed that using information of genes related to egg production could be used to improve the performance of native fowl of Yazd province.

Charati F.R.,Gonbad Higher Education Center | Hossaini Z.,Islamic Azad University at Qaemshahr | Hosseini-Tabatabaei M.R.,Islamic Azad University
Journal of Heterocyclic Chemistry | Year: 2012

A straightforward and efficient method for the synthesis of 1,2-dihydroisoquinolines via a one-pot, three-component reaction of isoquinoline, activated acetylenes, and NH-acids in water at 70°C without using any catalyst is reported. The method offers several advantages including high yields of products and an easy workup procedure.. © 2011 HeteroCorporation.

Sahandi J.,Gonbad Higher Education Center | Hajimoradloo A.,Gorgan University of Agricultural Sciences and Natural Resources
Human and Veterinary Medicine | Year: 2011

In this study we generally describe the hole-in-head disease and introduce a new method of treatment that called cupping. Cupping is important and old treatment for specific diseases in human, used by Iranian and Chinese medicinists in the past. This disease, often called hexamitiasis, is caused by a member of the genus Hexamita or Spironucleus. This parasite has two forms of infection one of them is external and cause hole-in-head disease and the other form is internal that cause intestinal problems. Hole-in-head disease cause death in flower horn fishes which are expensive and very popular members of Cichlidae family. Flower horn fish is a genetically improved hybrid between Amphilophus labiatus and Amphilophus trimaculatus. This simple method of cupping combined with stress factors removal was applied by us for the treatment of external hexamitiasis resulting in more than 50% cases of fish health recovery. The first signs of heath in treated specimens become visible after 4-6 days of treatment.

Khalilzadeh M.A.,Islamic Azad University at Qaemshahr | Hossaini Z.,Islamic Azad University at Qaemshahr | Charati F.R.,Gonbad Higher Education Center | Hallajian S.,Islamic Azad University at Qaemshahr | Rajabi M.,University of Milan
Molecular Diversity | Year: 2011

An efficient synthesis of 2-hydroxy-3-[2-oxo-2-phenylethylidene]-2-phenyl- 2, 3-dihydro-4 H-furo[3, 2-c] chromene-4(2H)-one is described. This involves the reaction between dibenzoylacetylene and 4-hydroxycoumarine in the presence of NaH (10mol %) in nearly quantitative yield. Treatment of this heterocyclic system with trimethyl chlorosilane in CHCl3 leads quantitatively to 4-oxo-3-[-[2-oxo-2-phenylethylidene]-2-phenyl-3H,4H-furo[3,2-c] chromene-1-ium chloride. Direct addition of nucleophiles, such as alcohols, amines or trialkyl phosphites to this salt in water as the solvent produces functionalized 2-phenyl-4H-f-furo[3,2-c] chromen derivatives in excellent yields. © Springer Science+Business Media B.V. 2010.

Khaleghi F.,National University of Malaysia | Din L.B.,National University of Malaysia | Charati F.R.,Gonbad Higher Education Center | Yaacob W.A.,National University of Malaysia | And 3 more authors.
Phytochemistry Letters | Year: 2011

A new benzofuran derivative (1) was isolated from the roots of Petasites hybridus and its structure was determined as 1-(6-hydroxy-2-isopropenyl-1- benzofuran-5-yl)-1-ethanone by spectroscopic data and X-ray crystallographic analysis. The compound 1 showed moderate inhibitory activity on human breast cancer MCF-7 cells proliferation in vitro with an IC50 value of 48 μmol/L. The interaction of bovine serum albumin (BSA) and DNA with compound 1 were studied in an aqueous solution under physiological conditions by UV-vis spectroscopy. © 2011 Phytochemical Society of Europe.

Hassani S.R.,Gorgan University of Agricultural Sciences and Natural Resources | Jafari Ahangari Y.,Gorgan University of Agricultural Sciences and Natural Resources | Moslemipour F.,Gonbad Higher Education Center | Akhlaghi A.,Shiraz University
Livestock Science | Year: 2014

At mid and high latitudes, seasonal breeding is prevalent in sheep production which makes ewes to reproduce for a restricted window of time. Unconfirmed local reports have declared a continuous reproductive activity in a half-tailed sheep breed, Dalagh, at a mid-latitude region (37°N) in Golestan province, northern Iran. The present study aimed to evaluate the ovarian and thyroidal activity in Dalagh ewes during a one-year-long trial. Fifty-five fertile healthy ewes were isolated from rams and bled weekly to quantify the serum levels of progesterone (P4), tri-iodothyronine (T3), and tetra-iodothyronine (T4), using radioimmunoassay. The day-length and ambient temperature were recorded daily. The lowest overall mean of P4 level was recorded in winter; whereas, no differences were found among those of other seasons. The overall mean values of serum T3 level were comparable in spring, autumn, and winter, being higher than that recorded in summer. The highest mean value of T4 level was found in winter and the lowest ones were observed in spring and summer with that of autumn lying between these extremes. The weekly variation of P4 level showed a decreasing trend towards the end of the trial, where the highest P4 levels were found in late May and September and the lowest one was noted in mid March. Interestingly, individual weekly records of P4 for each ewe revealed that none of the animals studied showed an 8-week or longer period wherein P4 level fell below 1ng/mL, the threshold reported for anestrous status. Although T3 levels had a steady trend, serum T4 showed an increasing trend as the trial proceeded, with the highest and lowest records found in January and July, respectively. Correlation coefficients between serum P4, T3, and T4 levels with day-length were +0.21, -0.25, and -0.42, respectively. The corresponding values with ambient temperature were +0.30, -0.57, and -0.84 for P4, T3, and T4, respectively. Data suggested that despite reproducing in a mid-latitude temperate region, Dalagh ewes showed a continuous cyclicity in ovarian activity throughout the year that would be beneficial to exploit it in breeding schemes to decrease seasonality at mid or possibly high latitudes. Future studies may be interested in searching for the underlying mechanism(s) involved. © 2013 Elsevier B.V.

Hosseini S.M.,Islamic Azad University | Teimouri M.,Gonbad Higher Education Center
International Conference on Advanced Communication Technology, ICACT | Year: 2010

The new upper bound interference temperature (IT) has provided Cognitive Radios (CRs) with new resources of frequency spectrum. The principle is that CRs are allowed to use channels mainly licensed to some Primary Users (PUs) provided that their operation will not violate the IT limit determined by PUs. In this paper, through statistical analysis, the effect of the modulation selection strategies of active CRs on the probability of blocking new CRs in one hand and on the excessive interference created for PUs on the other will be analyzed. The results, as expected, show that when CRs mostly use higher power modulations, both probability of blocking new CRs and interfering with PUs increase. Also, when CRs use the average power instead of maximum power as their metric for avoiding interfering with PUs, their interference with PUs are more likely, although they possibly obtain higher data rates.

Hosseini S.M.,Islamic Azad University | Teimouri M.,Gonbad Higher Education Center
International Conference on Advanced Communication Technology, ICACT | Year: 2010

Cognitive Radios (CRs) have been recently proposed for the problem of spectrum scarcity. The main principle of the operation of these radios is based on the opportunistic access to the frequency spectrum mainly dedicated to Primary Users (PUs). However, statistical characteristics of PUs, either their spatial distribution or time pattern of channel usage can affect the usability of a specific frequency band for CRs. In this paper, based on mathematical analysis, first, the effect of the spatial distribution of PUs on the number of CRs in an Ad-Hoc configuration will be investigated. Analysis of this case shows that there are limits on the number of CRs for full coverage of a given area when they transmit simultaneously with PUs. Then, based on the temporal statistics of PUs, Le., their arrival rate and channel usage, the usability of a specific frequency band for CRs will be explored in a non-simultaneous scenario. Mathematical analysis shows that for a given temporal specifications of PUs, there is an upper bound for the achievable data rates CRs may obtain.

Boloki M.L.,Gonbad Higher Education Center | Jafaryan H.,Gonbad Higher Education Center | Faramarzi M.,Gonbad Higher Education Center | Adineh H.,Gonbad Higher Education Center
AACL Bioflux | Year: 2011

This study was carried out to evaluate the effect of the product of commercial live bakers' yeast (Saccharomyces cerevisiae) so called Amax on the growth and survival of Persian sturgeon (Acipenser persicus) larvae via enrichment of Daphnia magna. The blends of Amax were used in three concentrations of 50, 100, 150 mg L1 with Daphnia in suspension of broth. Every day Daphnia by one of concentrations was bioencapsulated for 10 hours and Persian sturgeon larvae were fed on it. The Acipenser persicus larvae were fed from Daphnia on the base of the 50 percent of their body weight five times a day. The control group was fed on not enriched Daphnia. The gained body weight in experimental treatments of sturgeon larvae had significant difference compared to control treatment (p<0.05). In experimental treatments, Food Conversion Efficiency was increased while the Relative Food Intake significantly decreased (p<0.05). Food efficiency was increased significantly (p<0.05) in experimental treatments. The Amax had significant positive effects on the Specific Growth Rate (SGR), Average Daily Growth (ADG), Relative Gain Rate (RGR), Growth Conversation Efficiency (GCE), Daily Growth Coefficient (DGC) and Thermal Growth Coefficient (TGC) in comparison with control treatment (p<0.05). No significant difference in the condition factor was observed (P>0.05). The Amax had significant positive effects on survival rate in comparison with control treatment (p<0.05). The experiments indicated that the product of Saccharomyces cerevisiae has a high ability to increase the growth parameters and feeding efficiency in cultivation system of sturgeon fish.

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