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Shirani M.,Armenian National Agrarian University | Mohammadi-Ghehsareh A.,Islamic Azad University at Khorasgan
Advances in Environmental Biology | Year: 2013

The experiment was conducted as factorial in a completely randomized block design with 27 treatments and 4 replications under greenhouse conditions. Treatments included three sizes (S1= <0.5, S2= 0.5-1 and S3=1-2 cm), three composting times (C1=0, C2=3 and C3=6 months) of date palm waste and three irrigation levels (I1 =60% I3, I2= 80% I3 and I3=100%). During cultivation, the Papadopolus formula was used as fertigation solution. K, EC, pH, TA and vitamin C in tomato fruits differed significantly depending on composting time, particle size and irrigation level (P< 0.05). The highest amounts of K, EC, pH, TA and vitamin C in tomato fruit indicated that culture media 6 months composted, size 0.5-1 cm and irrigation 100% increased quality parameters of tomato fruit more than the other treatments. The result of this research showed that the characteristics of the growing media, as well as the growing techniques used (fertigation and irrigation levels), determine the quality of the tomato fruits that were produced. Source


Rahmani M.,University of Tehran | Dehghan-Banadaky M.,University of Tehran | Kamalyan R.,Armenian National Agrarian University
Animal Production Science | Year: 2015

Twenty-four early-lactation primiparous and multiparous Holstein cows, beginning 5 weeks postpartum, were used for 4 weeks to investigate the effects of feeding rumen-protected choline (RPC) or vitamin E on milk yield, dry matter intake (DMI), blood metabolites and plasma enzymes. Cows were randomly assigned to one of the following treatments: no supplement (control), 90 g/day of RPC, or 4400 IU/day of vitamin E. Treatments did not affect milk yield, DMI, plasma glucose, non-esterified fatty acids, blood urea nitrogen, aspartate aminotransferase or total bilirubin, whereas feeding RPC affected cholesterol, plasma albumin, and alkaline phosphatase (ALP). Feeding vitamin E affected triglyceride, cholesterol, β-hydroxy butyric acid, gamma-glutamyl transferase and alanine aminotransferase, and highly affected plasma albumin and ALP. There was a tendency for vitamin E supplementation to increase plasma total protein concentration. The results of this study suggest that supplemental vitamin E may improve liver function in dairy cows in early lactation. © 2015 CSIRO. Source


Sajadifar S.,Armenian National Agrarian University | Miranzadeh H.,University of Applied Science and Technology of Iran
International Journal of Poultry Science | Year: 2013

In this study experimental treatments were as follows: broilers fed with 40 mg/kg Zn (A), broilers fed with 40 mg/kg Zn and vaccinated against coccidiosis (B), broilers fed with 120 mg/kg Zn (C),broilers fed with 120 mg/kg Zn and vaccinated against coccidiosis (D), broilers fed with 200 mg/kg Zn (E), broilers fed with 200 mg/kg Zn and vaccinated against coccidiosis (F). Average body weight gain, average daily feed intake and feed conversion ratio were obtained on d 21 and 42. At 2, 22, 32, 42 days of age, the blood serums were tested for antibody titer against Newcastle disease vaccination, using the standard Haemagglutination Inhibition test. On day 42 total protein, albumin, globulin (by an automated analyzer), weights of spleen and bursa of fabricius (on a relative live weight basis) and total leukocytes (using a hemocytometer) were measured. No dietary treatment significantly altered average daily feed intake, body weight gain and feed conversion ratio at days 21 and 42. The highest weights of spleen and bursa of fabrecius were observed at the combination of highest level of zinc and coccidiosis vaccine. At 32 d, treatment D and at 42 d, treatments D, E and F had the highest antibody titer against Newcastle disease vaccination. It is concluded that the treatments B, C, D, E and F showed significant (p<0.05) increase in white blood cell count as compare to control group (treatment A). Treatment F significantly improved total protein and albumin as compare to treatment A (p<0.05). Additional levels of zinc could be considered as natural promoter to increase different aspects of immune system without any harmful effect on performance traits. © Asian Network for Scientific Information, 2013. Source


Yezekyan T.,Armenian National Agrarian University | Olt J.,Estonian University of Life Sciences
Engineering for Rural Development | Year: 2016

Vineyard floor management is a mandatory agricultural method for cultivating this kind of crop. In order to develop a strong root system and the portion of the plant that is above the ground, the soil must contain not only the required nutrients, but it should also be sufficiently humid, well-aerated, and have good thermal conductivity. The soil must be free from weeds that compete with grapevines for nutrients and moisture and aggravate the thermal conditions of the soil by shading it. The means for weed control depend on the soil and weather conditions, the thickness of weed vegetation, the irrigation system, and whether there is an underlying principle of using chemical agents for fighting weeds. In this article we considered widespread methods and techniques for weed control, improving the structure of soil and the methods of cultivating the areas between the plants in the vineyards, the comparison and justification of such methods from the financial perspective, and also the provision of necessary agrotechnical parameters of cultivating this kind of crop. The conducted comparative analysis has shown that the climate, anatomic and physiological peculiarities of grape varieties cultivated in Armenia are an important aspect that is being taken into consideration in developed countries upon choosing the machines for cultivating the areas between the plants in the vineyards. The purpose of this article is to develop to the vertical inter-row tiller of vineyards developed at the Armenian National Agrarian University (ANAU) an alternative variant for rocky soils and without power drive, or, in other words, with the principle of free-active spin-harrow for the inter-tillage of plant rows. Source


Sajadifar S.,Armenian National Agrarian University | Miranzadeh H.,University of Applied Science and Technology of Iran | Moazeni M.,University of Applied Science and Technology of Iran
Iranian Journal of Parasitology | Year: 2013

Background: The aim of the present study was the comparison of humoral and cell-mediated immunity in broilers fed with different levels of zinc during a coccidiosis challenge. Methods: One hundred and forty- four one-day-old broiler chicks were used with three dietary zinc (40, 120 and 200 mg/kg). At 14 d of age, all birds were inoculated orally with 5×103 sporulated oocysts of E. Tenella. At 2, 22, 32, 42 days of age, the blood serums were tested for antibody titer against New-castle disease vaccine, using the standard HI test. On day 42 the sum of ni-trite and nitrate based on the reduction of nitrate to nitrite by cadmium and white blood cell count (WBC) using a hemocytometer were measured. Results: At 42 d, levels of 120 and 200 mg significantly (P< 0.05) increased the antibody titer in compare with the control. The peak response of CBH was observed at the level of 200 mg Zn/kg diet. Also both level of 120 and 200 mg Zn/kg diet increased WBC count and sum of nitrite and nitrate in serum compared with the control. Conclusion: The levels of 120 and 200 mg Zn/kg diet could be considered as a non-pharmacologic booster of immunity in broilers chicks infected with E. Tenella. Source

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