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Articles by A.A. Naserian
Total Records ( 11 ) for A.A. Naserian
  S. Arbabi , T. Ghoorchi and A.A. Naserian
  Silage of orange by-products (mainly the peel) is tested in micro-silos, carrying out and checking 4 treatments: addition of 5% (fresh weight) Dried Citrus Pulp (DCP), of dried sugar beet pulp (DSP), of Wheat Straw (WS) in 2 different times (0, 72 h). Silages were assessed using both method of appearance evaluation and method of DM, pH. CP, NDF, ADF, TVFA, WSC, aerobic stability and DM degradation each of treatments were determined after 60 days. Treated silages had better appearance quality than the control silages in Flieg`s method. All of the silages had good and very good degrees in the method based on DM, pH. The treated silages had no differences pH compared with control. The control group that was sealed immediately, had lower DM content compared with treated silages (p<0.05). Treated silage with WS had the highest content of ADF (p<0.05). NDF in the control silage and the treated silage with DCP was lower than the others (p<0.05) and amount of CP in the treated silage with DSP was more than others (p<0.05). Time of ensiling and treatments made no difference in TVFA content of silages. WSC in treated silage with DCP and DSP were more than other samples (p<0.05). There are significant differences for the concentration of DDM, DE, ME, TDN in the silages. Treated silages with WS had lower contents than the others (p<0.05). The wilting before ensiling caused an increase in aerobic stability in treated silages compared with untreated silages (p<0.05). Application of WS additive resulted the lowest degradation dry matter among the experimental additives (p<0.05). Overall, in our experimental conditions, citrus pulp silage seemed to be convenient for producing animals.
  S. Arbabi , T. Ghoorchi and A.A. Naserian
  M. Behgar , R. Valizadeh , M. Mirzaee , A.A. Naserian and M.R. Nasiri
  Physical and chemical properties of 11 feeds including 3 forages; Alfalfa Hay (AH), Corn Silage (CS), Barley Silage (BS) and 8 Non-Forage Fiber Sources (NFFS); Soy Hull with Low (LSH) and High Seed (HSH), Cotton Seed Hull (CSH), Pistachio Hull (PH), Ground Peanut Hull (GPH), Sunflower Hull (SFH), Wheat Bran (WB) and Sugar Beet Pulp (SBP) were investigated. NFFS had a high bulk density (BD, 0.578-0.243; g mL-1) and ADL content and low water holding capacity (WHC, g/insoluble DM). Soluble DM (SDM) and soluble OM (SOM, g L-1) was low for SFH (0.7 and 0.62) and high for pH (6.25 and 4.19). Among all feed WHC had highest correlation with ADF and ash, while for NFFS, correlation was noted between WHC with BD and BC. Among all feeds BD had highest correlation with the NDF and NFC. For NFFS, BD had the highest correlation with ADF and SOM. Among all feeds BC had significant correlation with ash and Sash and pH had significant correlation with soluble fractions. In NFFS, significant correlation was noted between BC with ash, cell wall constituents, soluble fractions and pH. When NFFS were used for providing best predictive models, the r2-values were increased for most of presented models compare with all feeds. The best models were that predicted SOM and BC in NFFS (r2 = 0.995). Based on the results it appears that the type of feeds is critical factor influencing the relationship between physical and chemical parameters.
  M. Kazemi , A.M. Tahmasbi , R. Valizadeh , A.A. Naserian and M.M. Moheghi
  In vitro gas production and in situ techniques were used to evaluate nutritional value of some alternative weed forages e.g., Sorghum halepense, Salsola kali, Convolvulus arvensis and Portulaca oleracea. Cumulative gas production was recorded at 2, 4, 8, 12, 24, 48, 72, 96 and 120 h of incubation also, in situ disappear of dry matter for these weed forage was measured at 0, 2, 4, 8, 16, 24, 48, 72 and 96 h of incubation and gas production constants (b and c) were described using the equation y = b (1-e-ct). The most cumulative gas production was for Sorghum halepense in time of 120 h incubation (116.67 mL/300 mg of sample incubated) and Portulaca oleracea was the lowest cumulative gas production for 120 h incubation (66.35 mL/300 mg of sample incubated). The NDF, OM, Pr and DM were different among weed forages used in this study. The equation of y = a+b (1-e-ct) was applied for degradability of DM. The constant (readily soluble fraction, 53.53%) of Convolvulus arvensis was higher but, the constant of Salsola kali was lowest (45.82%). The b constant (insoluble fraction but degradable in rumen) for Sorghum halepense (44.48%) was significantly higher than other treatments and the c constant (rate of degradation of b per hour) was significantly higher for Portulaca oleracea (0.089%). According to results from gas production and in situ techniques, it seems that the Sorghum halepense has a higher nutritive value than other treatments, but more experiments were required for accurate determination of nutritional values of these forages.
  M.A. Norouzian , R. Valizadeh , A. Nabipour , A.A. Naserian and A.M. Tahmasbi
  The effect of rearing system on rumen development and non-carcass characteristics of Balouchi lambs were studied. Twenty-four male lambs were used in a completely randomized design. Eight lambs remained with their mothers throughout the experiment (NR) and 16 lambs divided 2 groups, ARWF, starter without alfalfa and ARF, starter containing 15% alfalfa and were housed individually. Glucose and BUN were not different significantly (p>0.05) between groups. BHBA concentration was higher in artificial rearing whereas, NEFA was higher in natural rearing lambs. Neither DNA content and nor cell size were affected by rearing methods but RNA content and ribosomal Capacity (Cs) were affected by rearing system (p<0.05). ARWF lambs showed thickest keratinized layer than NR lambs and NR, thickest than the ARF but other rumen morphological characteristics were not affect by group. Differences between naturally and artificially reared lambs in EBW and non-carcass organs weight except stomach weight (EBW%) and stomach and omasum capacity were not significant (p>0.05). The results of this study showed that natural rearing lambs have minimum development of rumen.
  R. Valizadeh , A.A. Naserian and P. Vahmani
  Chemical composition and degradability of Pistachio By-products (PB) were studied in 3 experiments. In the first experiment, PB were ensiled with urea (0 and 0.15%) and molasses (0, 1.5, 3.0 and 4.5%). Total phenols and tannins content of PB silages were reduced significantly (p<0.05) following Urea application. Their reduction rates were 60 and 80%, respectively. DM content of the treated PB silage with 4.5% molasses increased and significant (p<0.05) reduction was observed in phenols and tannin contents. In the second experiment, ruminal degradability coefficients were determined. The treatments were; dried PB (T1), PB silage without urea and molasses (T2) and PB silage with 0.15% molasses (T3). The "a" fraction of DM in T2 (0.379) was lower than T1 and T3. The "c" coefficient for DM in T1 (0.025) was higher than T2 and T3. The "b" coefficient of CP, in T3 (0.339) were lower than T1 and T2. The "c" coefficient of CP in T2 (0.020) was higher than T1 and T3. In the third experiment, rumen and intestinal disappearances of DM and CP were studied. Ruminal disappearance and total digestibility of DM, in T2 (46.28 and 54.70%) were lower than those for T1 and T3. Ruminal disappearance of CP differed significantly between the treatments. The intestinal disappearance of CP in T1 (18.5%) was significantly higher than that for T3 (13.6%). The results showed the dried PB had higher degradability and digestibility in comparison with the ensiled PB. More in vivo practical researches are required at farm levels.
  M.M. Moheghi , A.M. Tahmasbi , A.A. Naserian and A. Omid
  A study was made to evaluate the nutritional value of the Caraway-Seed Pulp (CSP) in concentrate component of the diet on the performance and blood metabolite of lactating Holstein cattle. Eight Holstein cattle (mean 40 days after calving) were allocated in 4 treatments based on Latin square design experiment. The treatments offered to animals were different levels of CSP, which substituted by Wheat Bran (WB) in concentrate by the following order: 0.0% CSP(100% WB-0.0% CSP as a control group); 33.3% CSP (66.7% WB, 33.3% CSP); 66.6% CSP (33.3% CSP+66.6% WB) and 100% CSP (0.0% WB+100% CSP). Nutrient composition in CSP based of DM were DM-37.6%, Protein-15.2%, fat-6%, NDF-55%, ADF-51% and Ash-14.5%. Overall feed intake was not statistically differ between treatments, however numerical improvement was observed in treatment 100% CSP compared to others although, the differences was not significant (p>0.05). The milk production and its composition results for all treatment was not significantly different (p>0.05). However, trend was to improve in milk fat by increasing CSP levels in diet with higher rate for treatment 100% CSP. Results obtained from blood metabolite analysis indicated that concentration of glucose was higher in treatment 0.0% CSP (control) compared to others, also, serum concentrate of SGOT and SGPT trended to increase by substitution of CSP in diet (p<0.05). Rumen N-NH3 and pH was not affected by any treatments. Obtain data from this study indicated that substitution of WB by CSP had not adverse effects on dairy cattle health and performance.
  H. Gholizadeh and A.A. Naserian
  This study was conducted to evaluate the effect of replacing barley with Dried Citrus Pulp (DCP) on the performance of growing kids. About 12 female Iranian Saanen weaned kids aged 88±3 days with live weight 7±0.7 kg were used in a completely randomized design. Kids were housed in individual metabolic cages. There were 3 treatments (n = 4 kids per treatment). The dietary treatments were T1, 30% lucerne with 70% concentrate supplement; T2 and T3, 7 and 14% of barley grain in supplements were replaced with DCP, respectively. Daily intake was determined. The growth of animals was monitored every 15 days. Rumen fluid was collected by stomach tube and pH measured. Blood samples were collected from each animal at the end of experiment via jugular vein, 2 h after morning feeding. Significant difference (p<0.05) occurred for DMI, average daily gain, feed efficiency, rumen fluid pH and Blood Urea Nitrogen (BUN). DMI and daily gain decreased with increasing DCP. In contrast, feed efficiency, rumen pH and BUN increased. Apparent digestibility of DM, NDF, ADF, CP and N-balance did not differ between treatments (p<0.05). No differences observe between treatments for body measurements (p>0.05). It was concluded that DCP in ration of growing kids is not able to support requirements like starch sources but citrus pulp could be incorporated into ruminant ration.
  T.S. Vafa , A.A. Naserian , A.R. Heravi Moussavi , R. Valizadeh and M. Danesh Mesgaran
  This experiment was designated to examine the effects of different levels of fish oil and canola oil on in vitro dry matter and organic matter digestibility of two forages including alfalfa hay and corn silage. Using a completely randomized design with 3x3 factorial arrangement of treatments, the effects of three levels (2, 4 and 6% of DM) of three oil sources (Fish Oil (FO), Canola Oil (CO) and combination of Fish Oil and Canola Oil (FOCO) in 50:50 ratios) in an in vitro batch fermentation on Dry Matter (IVDMD) and Organic Matter (IVOMD) digestibility of alfalfa hay and corn silage were studied. In this experiment, in contrast with control, all oil sources decreased IVDMD (71.4, 69.1, 66.2 and 70 for control, FO, CO and FOCO, respectively) and IVOMD (69.98, 66.4, 63.2 and 68.4 for control, FO, CO and FOCO, respectively) of alfalfa hay significantly (p<0.01). For corn silage, IVDMD (64.3, 63.5, 59.1 and 63% for control, FO, CO and FOCO, respectively) and IVOMD (65.4, 61.9, 58.4 and 62.5% for control, FO, CO and FOCO, respectively) decreased significantly, when oil was added. Among oil sources, canola oil significantly (p<0.05) decreases IVDMD and IVOMD of both forages in comparison with two other oil sources. Increasing oil levels significantly (p<0.05) decreased IVDMD and IVOMD of both forages but alfalfa hay was more susceptible to increasing oil levels than corn silage.
  T.S. Vafa , A.A. Naserian , A.R. Heravi Moussavi , R. Valizadeh and M. Danesh Mesgaran
  Two experiments were designated to examine the effects of different levels of fish oil and canola oil on in vitro and in vivo nutrient digestibility. Experiment 1 was performed to assess the effects of unsaturated oils (fish oil, canola oil, their combination) in three levels (2, 4 and 6% on DM basis) on In vitro Dry Matter (IVDMD) and Organic Matter (IVOMD) digestibility of alfalfa hay and corn silage. For both forages, oil supplementation decreased IVDMD and IVOMD significantly (p<0.01) and increasing oil levels significantly (p<0.05) decreased IVDMD and IVOMD of both forages but alfalfa hay was more susceptible to increasing oil levels than corn silage. In experiment 2, eight multiparous early lactation Holstein cows (42±12 DIM, 40±6 kg daily milk yield) were fed a total mixed ration supplemented with either 0% oil (Control), 2% Fish Oil (FO), 1% Canola Oil + 1% Fish Oil (COFO) or 2% canola oil according to a double 4x4 Latin square design to examine the effects of unsaturated oil on milk yield, DMI and nutrient digestibility. Each period lasted 3 weeks experimental analyses were restricted to the last week of each period. Diets consist of 20% alfalfa, 20% corn silage and 60% concentrate. Cows were housed in tie stalls and fed the TMR two times a day to allow 5-10% orts (as-fed basis). Experimental diets had no significant (p>0.05) effect on milk production but DMI decreased significantly (p<0.05) in FO diet. Digestibility of OM and NDF were significantly (p<0.05) decreased in FO diet in comparison with three other diets, ADF digestibility was decreased significantly (p<0.05) in all oil containing diet in comparison with control but fat digestibility was not affected by treatments (p>0.05). Results of the current experiments shows that combination of fish oil and canola oil in 2% of dry matter had less negative effects on nutrient digestibility of forages and total mixture rations.
  B. Sadighian , A.A. Naserian , R. Valizadeh and A.M. Tahmasbi
  The objective of the present study was to evaluate the effect of ammoniated of sugar Beet Pulp (BP) by different levels of ammonia and water on in vitro gas production parameters. The samples were left treated with water (90 and 120% of BP) and ammonia 1-3% of BP. The gas production data were fitted using an exponential equation of P = b(1-e-ct) where b is the volume of gas produced, c is the fractional rate constant of gas production (/h), t is the incubation time (h) and P is the volume of gas produced at time t. The most cumulative gas production was for w90a1 in time 98 h incubation (68.5404 mL/200 mg of sample incubated). The chemical composition and parameters of OMD, ME SCFA and NEL were different among ammoniated sugar beet pulp used in this study.
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