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Articles by Naser Maheri-Sis
Total Records ( 12 ) for Naser Maheri-Sis
  Abdol-Ahad Shaddel-Telli , Naser Maheri-Sis , Abolfazl Aghajanzadeh-Golshani , Abolfazl Asadi-Dizaji , Hosein Cheragi and Mozhgan Mousavi
  Varroa is one of the most dangerous honey bee parasites, which has caused serious damages to the bee industry. By now, various herbal and chemical drugs hard been used. In this research, the effect of 7 treatments including tobacco extract, harmel ext, thymus ext, tobacco smoke, harmel smoke and thymus smoke and also one control group each with three replicate in a completely randomized design (CRD) have been examined on 21 colonies. The whole period of experiment was five days. The rate of hive contamination at the beginning and end of the experiment along with daily rate of varroa and worker bee contamination were recorded. There was no significant difference between experimental hives at the beginning of the study. However, significant dissimilarity was found between experimental treatments at the end of period (p<0.05). Considering the rate of the mortality of varroas in different days and the whole period of the study, a significant different was observed (p<0.05) and tobacco ext. had the largest effect on the varroa control. Besides, significant dissimilarities in the mortality of the bees were found in various days nad considering this aspect, harmel ext had the highest effect.
  Mohammad Reza Dastouri , Kamran Fakhimzadeh , Jalal Shayeg , Jalil Dolgari-Sharaf , Mohammad Reza Valilou and Naser Maheri-Sis
  In this study, the collected multi floral honey from bee colonies in province of East Azerbaijan (Iran) was prepared the doubling dilution and impregnated on paper disks. These disks were used on bacterial cultured media and their antibacterial effects were assessed by disk diffusion test method. The selected bacteria were provided through the standard strains, in addition to that some of the clinical samples were also selected and the taken subsequences were compared with the standard strains. The positive extracts in the disk diffusion method, were selected and used in MIC (Minimum Inhibitory Concentration) method on the specific bacteria. The MBC (Minimum Bactericidal Concentration) method as a complimentary test also was performed on them. In the above mentioned tests, control (untreated) disks were also considered. The results showed that the obtained extracts of Iranian multi floral honey (from the bee colonies of East Azerbaijan Province) have broad spectrum antibacterial activities, although their efficacy showed diversity on different bacterial species.
  Afshar Mirzaei-Aghsaghali , Naser Maheri-Sis , Ali Mirza-Aghazadeh , Yahya Ebrahimnezhad , Mohammad Reza Dastouri and Abolfazl Aghajanzadeh Golshani
  This study was conducted to compare methane production in legume (two common Iranian alfalfa varieties) and grass (quackgrass; QCK) as forage sources in sheep nutrition by using nutrient composition of the diet. Each of the 2 hays of legume (Hamedani; HAM and Kareyonge; KAR varieties) and grass (QCK) were offered ad libitum to three Gezel rams. No significant difference found between Dry Matter (DM), Crude Protein (CP), Ash and Ether Extract (EE) of 2 alfalfa varieties, although the difference for Crude Fiber (CF) was significant (p<0.01). The Organic Matter (OM), DM, CP, CF, Ash contents of 2 species (legume and grass) were significantly different (p<0.05). Methane production (g per day, g per kg BW and g per kg BW0.75) were similar in HAM and KAR hays (p>0.05), whereas methane production (g per day, g per kg BW and g per kg BW0.75) in grass hay were significantly (p<0.01) higher than that of legume hay. Calculations based on nutrient composition of the diet indicate that grass hay can have a higher methane production than legume resulting to gross energy lost as CH4.
  Abolfazl Aghajanzadeh-Golshani , Hamid-Reza Ansari-Renani , Naser Maheri-Sis , Syeed-Mojtaba Syeedmoumen , Yahya Ebrahimnezhad and Ghassem Habibi Bibalani
  This experiment was conducted to study the effect of feeding different levels of two species of Atriplex canescens and Atriplex lentiformis replacing with Alfalfa on feed intake, body weight gain and secondary hair follicle activity of Raeini cashmere goats. A complete randomized design was used with 7 experimental treatments 1, 2, 3, 4 with 100% Alfalfa (control) and 20, 40 and 60 % Atriplex canescens and treatments 5, 6 and 7 with 20, 40 and 60 % Atriplex lentiformis respectively. Forty nine female Raeini goats of 18 months of age with an average initial body weight of 19.8±2.3 Kg were used for 180 days. Daily feed intake and weight gain was measured during experimental period. At the end of experimental period skin biopsies were taken from the right mid side region of goats. Skin samples were fixed in buffered formalin, dehydrated in series of ethanols, blocked in paraffin, sectioned with microtome and stained with Sacpic method. Active secondary follicle percentage was measured from the sectioned skinned samples. Results indicated that levels of two species of Atriplex had significant (p< 0.05) effect on feed intake and daily weight gain. Maximum feed intake and daily weight gain were found in control group (940±36.60 and 23.9 g d 1) respectively. Minimum feed intake was 615±77.09 g d 1 in treatment group 7 and minimum daily weight gain was -12.42 g d 1 in treatment group 4. Significant (p< 0.05) difference was found in active secondary follicle percentage between treatment groups. Active secondary follicle percentage was 91.21±0.20, 88.25±0.64, 86.74±1.23, 87.38±1.09, 86.19±1.34, 86.59±0.50 and 85.65±1.44 treatment groups 1, 2, 3, 4, 5, 6 and 7, respectively. In an overall of conclusion, from the stand point of body weight gain 20% Atriplex canescens or 20- 40% Atriplex lentiformis could be replaced with Alfalfa but in relation to fibre production the replacement rate for any Atriplex species should not exceed 20%.
  Ali Mirza-Aghazadeh , Afshar Mirzaei-Aghsaghali , Naser Maheri-Sis , Abolfazl Asadi-Dizaji and Abdulahad Shaddel
  The aim of the present study was to estimate the Microbial N yield (MN), Efficiency of Microbial Protein Supply (EMNS), amounts of Purine absorbed (Pa) and Purine Derivatives excretion (PDe) in gezel sheep fed Hamedani (HAM) and Kareyonge (KAR) hays. Digestible Organic Matter fermented in the Rumen (DOMR) of KAR (0.473 kg d 1) was lower than that of HAM hay (0.713 kg d 1). The MN was higher for HAM (22.8 g d 1) hay, than that of KAR hay (15.1 g d 1); but EMNS was similar (32 g N kg 1 DOMR). The Pa and PDe contents of HAM hay were higher than that of KAR hay (31.6 vs. 20.8 and 28.5 vs. 19.5 mmol d 1, respectively). In conclusion,it seems that, HAM hay can have a higher inclusion than of KAR hay in diets for sheep because of greater MN and PDe.
  Mohammad Reza Dastouri , Naser Maheri-Sis , Abolfazl Aghajanzadeh-Golshani and Yahya Ebrahim-Nezhad
  This research was carried out with 25 off spring queens obtained from one mother queen. Twenty five sister queens breed in nucleus hives and introduce to 25 colonies. Before start bee feeding, the colonies equalized in population and honey source. Environment conditions in all colonies were same. This experiment was applied in 4 diet treatment and each treat in 5 replicates. Experimental treatment consisted of 4 base diets (pea powder, milk powder, soybean meal and collected pollen). All of diet distribute randomized between 25 colonies. Propose of this research were determined relation between nutritional effects on colonies population, honey and pollen source. After 2 month feeding with above diets, data`s from this experiment was analyses. Significant different was between pea and pollen treatment with other diets (p< 0.01). The best performance was in pea and pollen treatment; but between pea and pollen treatment wasn`t significant different. The best treatments ware pea and pollen. Perhaps this performance related to decrease anti nutritional factor (anti trypsin and tannin) processes in pea powder.
  Naser Maheri-Sis , Amir Reza Safaei , Afshar Mirzaei-Aghsaghali , Ali Mirza-Aghazadeh and Mohammad Reza Dastoori
  The objective of this study, was to assess the nutritive value of two forage species include Alfalfa (ALF) and Quackgrass (QCK) grown in Iran by using the chemical composition, in vitro gas production kinetics, Organic Matter Digestibility (OMD) and Metabolisable Energy (ME) contents. Rrumen mixed microbe inoculums were taken from two fistulated Gezel rams. Samples of forages were incubated with rumen fluid to determine gas production. Gas productions were measured at 2, 4, 6, 8, 12, 24, 48, 72 and 96 h. No significant differences were found between Organic Matter (OM), Ether Extract (EE), ash and Acid Detergent fiber (ADL) contents of experimental forages, although the differences for Dry Matter (DM), Crude Protein (CP), Crude Fiber (CF), Neutral Detergent Fiber (NDF), ADF and Gross Energy (GE) were significant (p<0.01). Gas production at all incubation times and gas production constants (a, b, c and a + b) were significantly (p<0.01) higher in ALF hay. The OMD and ME for ALF and QCK hays were 71.2, 43.45% and 10.96, 6.58 MJ per Kg DM, respectively. Under the climatic conditions of the 2005 growing season, the nutritive value of ALF hay was higher to that of QCK hay, because of lower NDF, greater cell content, OMD and ME.
  Saeid Chekani-Azar , Naser Maheri-Sis , Habib Aghdam Shahriar and Alireza Ahmadzadeh
  This experiment was conducted to assess the effect of replacing Poultry Fat (PF) with Fish Oil (FO) in broiler diets on performance and different parts of carcass. Three percents oil in 4 diets were altered with replacing PF by FO in completely randomized design at 4 treatments with 4 replicates (T1 = 3%PF, T2 = 2% PF+1% FO, 3 = 1% PF+2% FO and T4 = 3% FO) and were given ad libitum to the birds fed throughout the growth period. Performance and carcass parts were determined after withdrawal of FO from the diet (during one week), before slaughtering in 49-d old. Higher live weight, weight gain and lower Feed Conversion Ratio (FCR) were recorded for birds T3 (1% PF+2% FO). The low abdominal fat and highest weight of spleen was observed for treatment of 3% fish oil (T4), (p<0.01). Feed intake and other parts of carcass had not significant differences among treatments. In conclusion it seems that inclusion of fish oil in diets including poultry fat could be produce better performance and carcass efficiency.
  Naser Maheri-Sis , Mohamad Chamani , Ali-Asghar Sadeghi , Ali Mirza-Aghazadeh and Amir-Reza Safaei
  The present study determines the chemical composition and estimation of nutritive value of 2 types of chickpea wastes including Culled Chickpea (CCP) and Chickpea Dehulling by-Products (CDP) using in vitro gas production technique in sheep. The samples were collected from 10 pea packaging and processing factories. The feed samples (200 mg from each ) were incubated with rumen liquor taken from three fistulated Ghezel rams at 2, 4, 6, 8, 12, 24, 48, 72 and 96 h. The results showed that Organic Matter (OM), Ether Extract (EE), Non Fibrous Carbohydrates (NFC), starch and Total Phenolic Compounds (TPC) were significantly (p<0.05) greater in CCP than that of CDP, but Neutral Detergent Fiber (NDF) were higher in CDP (p<0.05). The Crud Protein (CP) and tannins of two feed samples were similar. There were significant differences (p<0.05) in Dry Matter Digestibility (DMD), Organic Matter Digestibility (OMD), Short Chain Fatty Acids (SCFA) and Metabolizable Energy (ME) contents (p<0.01) of 2 experimental wastes. Gas productions for 24 h were significantly (p<0.05) higher in CCP than CDP (75.6 vs. 60.6 mL). The gas production constants values (a, b and c) for CCP were 4.6, 85.3 and 0.05 while for CDP were 4.9, 78.6 and 0.05, respectively. In an overall conclusion it seems that, the nutritive value of CCP was higher than that of CDP.
  Sayed-Majid Hosseini , Sayed-Mostafa Akbary , Naser Maheri-Sis and Afshar Mirzaei Aghsaghali
  This study was conducted to evaluate the effect of 3 experimental treatment including different metabolizable energy levels (T1 = 2.34, T2 = 2.47 and T3 = 2.6 Mcal kg 1 DM) on performance and carcass characteristics of Iranian native sheep (Bahmaei). At the beginning of the experimental period the body weight of lambs on average was 26±1.7 kg and 90 days of age. Forty-eight Bahmaei male lambs were randomly distributed into 3 dietary treatments with 4 replicates based on completely randomized design. Total experimental period was 90 days. Average Daily Gain (ADG), Average Daily Feed Intake (ADFI), Feed Conversion Ratio (FCR), live weights at slaughter, cold carcass weights and body fat weight (abdominal fat + tallow) were recorded during experimental period and after slaughtering. Metabolizable energy levels did influence the all of above mentioned parameters. The ADG in treatment 3 (T3) was significantly (p<0.05) higher than that of treatment 1 and 2 (T1 and T2). The ADFI in T1 was significantly (p<0.05) higher than that of T2 and T3. Carcasses from the T2 and T3 diet lambs were similar and higher than that T1 diet. Live weight at slaughter and cold carcasses weight in T3 was significantly higher than that of T1 (p<0.05) while, T2 was similar to T1 and T3. The body fat weight were significantly (p<0.05) higher for carcasses from T3 diet lambs compared with those from T1 and T2. This study indicated that ADG, FCR, live weights at slaughter, cold carcass weights and body fat weight (abdominal fat + tallow) were altered by different energy levels and under intensive feeding, the Bahmaei male lambs were produced desirable carcass and ADG using T3 diet.
  Omid Khosravifar , Naser Maheri-Sis , Habib Aghdam-Shahriar , Ramin Salamat-Doost and Ali-Reza Baradaran-Hasanzadeh
  The current study, was conducted to determines the chemical composition and estimation of nutritive value of Exhausted Dry Olive Cake (EDOC) and evaluate the effect of baker’s yeast (Saccharomyces cerevisiae, SC) on the Metabolizable Energy (ME) and Organic Matter Digestibility (OMD) of exhausted dry olive cake using in vitro gas production technique in sheep. The feed samples (200 mg) were incubated with rumen liquor taken from 3 fistulated Ghezel rams at 2, 4, 6, 8, 12, 16, 24, 36 and 48 h. The results showed that, exhausted dry olive cake was highly fibrous material and CP content of this by-product was low. Cumulative gas production volume in 2, 4 and 6 h increased when exhausted dry olive cake supplemented with Saccharomyces cerevisiae. Addition of live yeast did not result in significant positive effect on Metabolizable Energy (ME), Organic Matter Digestibility (OMD) and gas production parameters on exhausted dry olive cake.
  Sayed Majid Hosseini , Sayed Mostafa Akbary , Naser Maheri-Sis and Afshar Mirzaei-Aghsaghali
  The study was conducted to investigate the effect of excess lysine on performance, viscera weight and abdominal fat in broilers during starter (0-3 weeks) and growing (4-6 weeks) periods. Two hundred and forty days old broiler chicks were reared using completely randomized design with four treatments groups (T1 = 0%, T2 = 0.2%, T3 = 0.4%, T4 = 0.6% excess lysine ) having three replicates of 20 birds in each group for 6 weeks. Results showed that the treatments groups there had no significant differences on feed intake at the rearing period. Weight gain and feed conversion ratio was better (p<0.05) in treatment groups than T1 (control group). There were significant differences in percentage of abdominal fat weight and offal weight between treatments (p<0.05) in total period. Overall, we can suggest that T3 (0.4% excess lysine) had better performance and carcass yield than other treatments.
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