M.H. Fathi Nasri

University of Birjand, Birdjand, Khorāsān-e Jonūbī, Iran

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Publications (18)21.13 Total impact

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    F. Khosravi · M.H. Fathi Nasri · H. Farhangfar · J. Modaresi
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    ABSTRACT: This study was conducted to investigate the effect of addition of polyethylene glycol (PEG), urea, and calcium hydroxide as tannin-inactivating agents, on the chemical composition, polyphenolic compounds content, and rumen degradability of ensiled pomegranate seed pulp (PSP). The experimental treatments were as: (1) PSP ensiled without additive, (2) PSP ensiled with PEG, (3) PSP ensiled with urea, and (4) PSP ensiled with calcium hydroxide. The results indicated that urea and calcium hydroxide addition reduced (P < 0.001) the total polyphenolic compounds (TP) and total tannin (TT) contents of PSP, whereas the condensed tannin (CT) content was not affected by the additives. The hydrolyzable tannin (HT) content of PSP was reduced (P < 0.05) with calcium hydroxide addition, and the levels of punicalagin A and ellagic acid (EA), which are potent antioxidants, were decreased (P < 0.02). PEG and calcium hydroxide additives decreased the rumen and total tract digestibility of the DM of PSP (P < 0.006 and P < 0.02, respectively). Urea appeared to be the most suitable chemical agent for ensiling PSP because it decreased the TP and TT contents of PSP, did not affect punicalagin A and EA content, and improved rumen and total tract digestibility of the DM of PSP.
    Full-text · Dataset · Nov 2015
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    ABSTRACT: The effect on performance of adding calcium (Ca)-butyrate and Oleobiotec (a flavouring agent) additives to dairy calf starter diet was investigated. Thirty-two newborn Holstein calves (16 males and 16 females) were used in a completely randomized design with four treatments as: (1) diet with no additives, (2) diet containing Ca-butyrate, (3) diet containing Oleobiotec and (4) diet containing Ca-butyrate plus Oleobiotec. Milk of calves was supplemented with additives in the first 20 days of the study and then additives were top-dressed into the starter. Calcium-butyrate had no effect on starter and alfalfa intake during pre-weaning, post-weaning and over the whole trial period but it significantly increased the average daily gain and feed efficiency of calves during post-weaning and the whole trial period. Adding Oleobiotec did not change calf performance significantly. Furthermore, no synergistic effect of experimental additives on calf performance was observed.
    No preview · Article · Aug 2015 · The Journal of Agricultural Science
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    A. Emami · M.H. Fathi Nasri · M. Ganjkhanlou · L. Rashidi · A. Zali
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    ABSTRACT: The effect of level of dried pomegranate seed pulp (PSP) in the diet of kids on meat quality and fatty acid profiles of intramuscular and subcutaneous fat was studied. Thirty two . Mahabadi kids were randomly allocated to four dietary treatments: without PSP (control), containing 50. g PSP/kg DM (PSP5), containing 100. g PSP/kg DM (PSP10), and containing 150. g PSP/kg DM (PSP15). At the end of the 84-day feeding trial, the kids were slaughtered and . m. longissimus lumborum (LL) and subcutaneous adipose tissues were sampled. Addition of PSP linearly increased (P =0.01) fat content and decreased (P . <. 0.01) shear force, drip loss, total aerobic bacterial count and lipid oxidation of LL muscle. Feeding PSP diets linearly increased the concentrations of C18:2 n-6 (P . <. 0.01), C18:3 n-3 (P . <. 0.001), n-6 polyunsaturated fatty acids (PUFA; . P . <. 0.01) and n-3 PUFA (P . <. 0.001) and decreased (P . <. 0.05) the ratio of n-6/n-3 in both muscle and adipose tissues. A linear increase was observed in vaccenic acid (VA, . P . <. 0.01), conjugated linoleic acid (CLA; . P . <. 0.001) and punicic acid (PUA; . P . <. 0.001) concentration in subcutaneous and intramuscular fat, with increasing PSP level in diet. In conclusion, PSP supplementation of kid's diet up to 150. g/kg DM can improve the nutritional and functional properties of meat.
    Full-text · Article · Aug 2015 · Animal Feed Science and Technology
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    F. Khosravi · M.H. Fathi Nasri · H. Farhangfar · J. Modaresi
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    ABSTRACT: This study was conducted to investigate the effect of addition of polyethylene glycol (PEG), urea, and calcium hydroxide as tannin-inactivating agents, on the chemical composition, polyphenolic compounds content, and rumen degradability of ensiled pomegranate seed pulp (PSP). The experimental treatments were as: (1) PSP ensiled without additive, (2) PSP ensiled with PEG, (3) PSP ensiled with urea, and (4) PSP ensiled with calcium hydroxide. The results indicated that urea and calcium hydroxide addition reduced (P < 0.001) the total polyphenolic compounds (TP) and total tannin (TT) contents of PSP, whereas the condensed tannin (CT) content was not affected by the additives. The hydrolyzable tannin (HT) content of PSP was reduced (P < 0.05) with calcium hydroxide addition, and the levels of punicallagin A and ellagic acid (EA), which are potent antioxidants, were decreased (P < 0.02). PEG and calcium hydroxide additives decreased the rumen and total tract digestibility of the DM of PSP (P < 0.006 and P < 0.02, respectively). Urea appeared to be the most suitable chemical agent for ensiling PSP because it decreased the TP and TT contents of PSP, did not affect punicallagin A and EA content, and improved rumen and total tract digestibility of the DM of PSP.
    Full-text · Article · Jun 2015 · Animal Feed Science and Technology
  • A Emami · M H Fathi Nasri · M Ganjkhanlou · A Zali · L Rashidi
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    ABSTRACT: This study was conducted to evaluate the effects of dietary pomegranate seed pulp (PSP) on meat color and lipid stability of kids. Thirty-two Mahabadi male kids were randomly assigned to one of four diets with different levels of PSP: 1 - diet without PSP (Control), 2 - diet containing 5% PSP (PSP5), 3 - diet containing 10% PSP (PSP10), and 4 - diet containing 15% PSP (PSP15). The kids were slaughtered at the end of the study and m. longissimus lumborum (LL) was sampled. The TBARS values of both raw and cooked meat were decreased (P<0.0001) by increasing levels of PSP in the diet. The meat of kids fed PSP15 showed higher a* and C* values (P<0.01) and lower H* and b* values (P<0.001), than kids fed with Control diet. The results of this experiment indicated that replacing barley and corn grains with PSP in the diet may improve the color and lipid stability of kid meat. Copyright © 2015 Elsevier Ltd. All rights reserved.
    No preview · Article · Feb 2015 · Meat Science
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    ABSTRACT: Six classical growth functions (monomolecular, Schumacher, Gompertz, logistic, Richards, and Morgan) were fitted to individual and average (by parity) cumulative milk production curves of Canadian Holstein dairy cows. The data analyzed consisted of approximately 91,000 daily milk yield records corresponding to 122 first, 99 second, and 92 third parity individual lactation curves. The functions were fitted using nonlinear regression procedures, and their performance was assessed using goodness-of-fit statistics (coefficient of determination, residual mean squares, Akaike information criterion, and the correlation and concordance coefficients between observed and adjusted milk yields at several days in milk). Overall, all the growth functions evaluated showed an acceptable fit to the cumulative milk production curves, with the Richards equation ranking first (smallest Akaike information criterion) followed by the Morgan equation. Differences among the functions in their goodness-of-fit were enlarged when fitted to average curves by parity, where the sigmoidal functions with a variable point of inflection (Richards and Morgan) outperformed the other 4 equations. All the functions provided satisfactory predictions of milk yield (calculated from the first derivative of the functions) at different lactation stages, from early to late lactation. The Richards and Morgan equations provided the most accurate estimates of peak yield and total milk production per 305-d lactation, whereas the least accurate estimates were obtained with the logistic equation. In conclusion, classical growth functions (especially sigmoidal functions with a variable point of inflection) proved to be feasible alternatives to fit cumulative milk production curves of dairy cows, resulting in suitable statistical performance and accurate estimates of lactation traits. Copyright © 2015 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.
    No preview · Article · Jan 2015 · Journal of Dairy Science
  • A. Emami · M. Ganjkhanlou · M. H. Fathi Nasri · A. Zali · L. Rashidi
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    ABSTRACT: The objective of this experiment was to investigate the effect of partial replacing of cereal grains of diet with pomegranate seed pulp (PSP) on performance, nutrient digestibility and antioxidant capacity of fattening Mahabadi goat kids. Thirty-two Mahabadi male goat kids, 4–5 months of age and 16.5 ± 2.8 kg body weight (BW) were assigned to four dietary treatments: (1) diet without PSP (control), (2) diet containing 5% of PSP (PSP5), (3) diet containing 10% of PSP (PSP10), and (4) diet containing 15% of PSP (PSP15) (DM basis). The kids were slaughtered after 84 d of feeding trial and antioxidant capacity was measured in the liver and longissimus lumborum (LL) muscle samples. Dry matter intake (DMI), average daily gain (ADG), and feed conversion ratio (FCR) were not affected by diets (P > 0.05). Feed cost per kg of hot and cold carcass weight decreased with increasing levels of PSP in diet (P < 0.05). Addition of PSP to diet decreased kidney fat (P < 0.05) and tended to increase ether extract (EE) apparent digestibility (P = 0.07). The LL muscle (P < 0.05), liver (P = 0.08) and plasma (P < 0.05) samples from kids fed PSP15 displayed a greater antioxidant capacity than kids fed control diet. No significant difference was found in glutathione peroxidase (GSH-Px) activity among the groups (P > 0.05), but the malondialdehyde (MDA) content of the LL muscle, liver and plasma decreased (P < 0.05) in PSP15 group when compared with control group. The results of this study indicated that partial replacing of dietary cereal grains with PSP did not affect growth performance, carcass traits and nutrient digestibility, while decreased cost of meat production and improved the antioxidant capacity of kids.
    No preview · Article · Dec 2014 · Small Ruminant Research
  • Source
    F Khosravi · M H F Nasri · H F Far · J Modarresi
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    ABSTRACT: The aim of this study was to investigate the effect of adding different chemical agents including urea, calcium hydroxide and polyethylene glycol to ensiled pomegranate seed pulp (PSP). The PSP which is a by-product in the industrial decoction of pomegranate, contains large amounts of oil (with some varieties having total lipid contents on a dry matter basis ranging from 66 to 193 g/kg DM) and other nutrients which are valuable in meeting the nutritional requirements of ruminants, but it also contain some tannins that may have adverse effects on animal performance. There are several methods of tannins deactivation that ensiling of feeds along with different chemicals are among the most effective approaches. The PSP (containing 475g/kg DM) was ensiled within plastic buckets without any additive or along with urea, calcium hydroxide and polyethylene glycol at a rate of 20, 20 and 90 g/kg DM of PSP, respectively. Silos were opened after 60 days and total polyphenolics (TP), total tannins (TT) and condensed tannin (CT) concentrations were measured on dried samples. The data were analyzed as a completely randomized design with 4 treatments each by 4 replicates using SAS software. The results showed adding urea significantly (p<0.01) reduced the TP (22.9 vs 33.4 g/kg DM) and TT (7.3 vs 12.0 g/kg DM) content but had no effect on CT (0.97 vs 1.1) content. Calcium hydroxide also significantly (p<0.01) lowered the TP (8.2 vs 33.4 g/kg DM) and TT (1.0 vs 12.0 g/kg DM) content of PSP but polyethylene glycol was not affect the TP, TT and CT content of PSP and is most likely due to kind of tannin in PSP which is of hydrolizable kind.
    Full-text · Conference Paper · Jan 2012
  • J Modaresi · M. H. Fathi Nasri · L Rashidi · O Dayani · E Kebreab
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    ABSTRACT: The effects of feeding pomegranate seed pulp (PSP) on milk yield, milk composition, fatty acid profiles of milk fat, and blood metabolites were examined in this study. During a pretrial period, 27 multiparous southern Khorasan (Iran) cross-bred goats were fed a similar diet and dry matter intake, milk yield, and milk composition were recorded. After adaptation and based on pretrial records, the goats were randomly assigned to 1 of 3 experimental diets and were housed in individual stalls. Experimental diets included 0, 6, or 12% of PSP (dry matter basis) and were fed as total mixed rations ad libitum for a 45-d period. Diets were formulated to be isonitrogenous and isocaloric. Supplementation of PSP did not affect dry matter intake or average daily gain of goats. Milk yield was not affected by inclusion of PSP in the diet. Milk fat concentration of goats fed diets with 6 and 12% PSP increased, but milk fat yield, milk protein concentration, and milk solids-not-fat concentration of goats were not affected by diets. Feeding PSP did not affect blood glucose, cholesterol, urea N, triglyceride, or lipoproteins. Feeding goats a diet containing 12% PSP modified the milk fatty acid profile, including conjugated linoleic, punicic, and vaccenic acids.
    No preview · Article · Aug 2011 · Journal of Dairy Science
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    ABSTRACT: A mechanistic lactation model, based on a theory of mammary cell proliferation and cell death, was studied and compared to the equation of Wood (1967). Lactation curves of British Holstein Friesian cows (176 curves), Spanish Churra sheep (40 curves) and Spanish Murciano–Granadina goats (30 curves) were used for model evaluation. Both models were fitted in their original form using non-linear least squares estimation. The parameters were compared among species and among parity groups within species.
    Full-text · Article · May 2010 · The Journal of Agricultural Science
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    M Hassan Fathi Nasri · M Danesh Mesgaran · J France · E Kebreab · H Farhangfar

    Full-text · Article · Apr 2010
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    M. H. FATHI NASRI · J. France · N E Odongo · S. Lopez · A. Bannink · E. Kebreab
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    ABSTRACT: Descriptions of entire lactations were investigated using six mathematical equations. comprising the differentials of four growth functions (logistic. Gompertz, Schumacher and Morgan) and two other equations (Wood and Dijkstra). The data contained monthly milk yield records from 70 first, 70 second and 75 third parity Iranian Holstein cows. Indicators of fit were model behavior, statistical evaluation and biologically meaningful parameter estimates and lactation features. Analysis of variance with equation, parity and their interaction as factors and with cows as replicates was performed to compare goodness of fit of the equations. The interaction of equation and parity was not significant for any statistics, which showed that there vas no tendency For one equation to fit a given parity better than other equations. Although model behaviour analysis showed better performance of growth functions than the Wood and Dijkstra equations in filling the individual lactation curves, statistical evaluation revealed that there was no significant difference between file goodness of fit of the different equations. Evaluation of lactation features showed that the Dijkstra equation was able to estimate the initial milk yield and peak yield more accurately than the other equations. Overall evaluation of the different equations demonstrated the potential of the differentials of simple empirical growth functions used in file Current study as equations for fitting monthly milk records of Holstein dairy cattle.
    Full-text · Article · Dec 2008 · The Journal of Agricultural Science
  • M.H. Fathi Nasri · M. Danesh Mesgaran · E. Kebreab
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    ABSTRACT: The effects of heat processing (roasting and steeping) on nitrogen (N) fractionations, ruminal degradation and intestinal digestibility of N and amino acids (AA) in two Iranian whole soybean cultivars (Sahar and Williams) were determined using two ruminally fistulated and two intestinally cannulated Holstein steers by nylon bag techniques. The seeds were roasted at 140 to 145 °C using a drum roaster. A fraction of the seeds were cooled immediately and the rest were held in isolated barrels for 45 min (steeping). The non-protein N (NPN) and buffer soluble N (BSN) fractions in heat processed soybeans were found to be reduced significantly (P
    No preview · Article · Jan 2008 · Livestock Science
  • M. H. FATHI NASRI · M. DANESH MESGARAN · A. NIKKHAH · R. VALIZADEH · E. KEBREAB · J. FRANCE
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    ABSTRACT: The current study evaluated responses of early lactation Iranian Holstein cows to feeding roasted whole soybeans (SB) plus cottonseed meal (CSM), raw SB plus CSM and soybean meal (SBM) plus cottonseed (CS) in diets with lucerne hay and maize silage as the primary forage source. Treatments consisted of a total mixed ration that included 387 g forage/kg, supplemented with: (1) 120 g roasted SB/kg and 82 g CSM/kg, (2) 120 g raw SB/kg and 82 g CSM/kg, or (3) 120 g SBM/kg and 82 g CS/kg on a dry matter (DM) basis. Diets were offered to 14 multiparous Holstein cows (body weight=617.0 kg, days in milk=16.9) that were assigned randomly to one of three experimental diets for a 45-day trial. Dry matter intake (DMI) was significantly higher for the roasted SB plus CSM diet than for the raw SB plus CSM diet but the difference between the SB plus CSM diets and SBM plus CS was not significant. Yields of milk and 35 g fat-corrected milk (FCM)/kg and milk fat were significantly higher for the roasted SB plus CSM diet than for raw SB plus CSM and also for the SB plus CSM diets than for SBM plus CS. Milk protein concentration was significantly increased by about 2.0 g/kg by the SBM plus CS diet, but milk protein yield was the same for cows fed SBM plus CS, roasted SB plus CSM and raw SB plus CSM diets. Rumen ammonia N, plasma urea N (PUN) and milk urea N (MUN) concentrations were lower when the roasted SB plus CSM diet was fed. Ruminal pH and plasma glucose and β-hydroxybutyrate concentrations were not affected by dietary treatments. Plasma concentrations of essential amino acids (EAA), except Leu and Phe, were higher in cows fed the roasted SB plus CSM diet than in those fed raw SB plus CSM. The cows fed the SBM plus CS diet had the same concentrations of EAA, except Phe, as cows fed SB plus CSM diets. For diets based on lucerne hay and maize silage as the primary forage source, roasting of SB provides additional benefits over raw SB.
    No preview · Article · Sep 2007 · The Journal of Agricultural Science
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    M.H. Fathi Nasri · M. Danesh Mesgaran · E. Kebreab · J. France
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    ABSTRACT: Responses of past peak lactating Iranian Holstein cows to feeding roasted whole soybean (SB), raw SB or soybean meal (SBM) supplements were evaluated. Treatments consisted of a total mixed ration (TMR) with 34% forage (21% alfalfa hay and 13% corn silage) supplemented with 11.9% SBM or 13.3% roasted SB or raw SB. Diets were offered to 18 multiparous cows assigned randomly to one of three experimental diets for a 49-d trial. Dry matter intake was not significantly different, but total and fat-corrected milk yields were higher for cows fed the roasted SB diet than the other treatments. Milk fat concentration was not significantly different among treatments, but milk fat yield was significantly higher for cows fed the roasted SB and SBM diets. Milk protein concentration was significantly decreased by the raw and roasted SB diets, but milk protein yield was unaffected. Feeding roasted SB significantly reduced rumen ammonia N, plasma urea N and milk urea N concentrations. Ruminal pH, plasma glucose and beta-hydroxybutyrate concentrations were not affected. Compared with the other treatments, roasted SB increased plasma concentration of most essential amino acids, except leucine and phenylalanine. Although caution must be taken in the interpretation of the results due to the limited number of observations in the experiment, feeding roasted SB in a diet with alfalfa hay as the primary forage was beneficial.
    Full-text · Article · Sep 2007 · The Canadian veterinary journal. La revue veterinaire canadienne
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    ABSTRACT: The effect of different Effective Rumen Degradable Protein (ERDP) to Fermentable Metabolizable Energy (FME) on early lactating cow responses was investigated. Total tract digestibility of organic matter of various feedstuffs including barely grain, corn grain, wheat bran, cottonseed meal, soybean meal, sugar beet pulp, alfalfa hay, cotton seeds, corn silage and fish meal was determined using in situ technique. These data were used to predict FME of the feedstuffs. Two diets were provided with different ERDP/FME ratio (9.7 and 10.7 g MJ -1). The diets fed to fourteen early lactating Holstein cows averaging 21?16 Days In Milk (DIM) and 32?9 Kg d -1 milk yield for seven weeks, using a completely randomized design. Dry matter intake, milk yield and milk composition were measured weekly. Blood metabolites including glucose and urea nitrogen were measured in weeks 4 and 7. Rumen fluid NH3-N was recorded in the 3rd week of the experiment. Dry matter intake was significantly (p-1 than those fed ERDP/FME = 10.7 g MJ -1 (21 vs. 21.6, respectively). Milk yield was significantly (p-1 compared with those fed ERDP/FME = 10.7 g MJ -1 (35.2 vs. 32.3, respectively). Milk composition, blood metabolites and rumen fluid NH3-N were not significantly affected by the treatments (p>0.05).
    No preview · Article · Apr 2007 · Journal of Animal and Veterinary Advances
  • Source
    M H Fathi Nasri · M Danesh Mesgaran · J France · J P Cant · E Kebreab
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    ABSTRACT: Different mathematical models were evaluated as candidates to describe ruminal dry matter (DM) and crude protein (CP) degradation kinetics of raw and roasted whole soybeans from data obtained using the in situ polyester bag technique. Three models were used: segmented with up to 3 straight lines (model I), negative exponential (model II), and rational function or inverse polynomial (linear over linear; model III). A fourth, a generalized sigmoidal model, was also considered but the data did not exhibit sigmoidicity, so it was dropped from the analysis. Lagged and nonlagged versions of each model were fitted to the DM and CP disappearance curves of 6 different feeds (2 cultivars of raw or differently heat-processed whole soybean). The comparison between lagged and nonlagged versions of each model, based on statistical and behavior characteristics, showed for all models that the discrete lag parameter did not significantly improve the fit to ruminal DM and CP disappearance curves. The comparison between models (using nonlagged equations) showed that models I and II gave better goodness-of-fit than model III. Based on biological characteristics, models II and III underestimated the undegradable DM and CP fractions, but there was no significant difference between models for extent of degradation.
    Full-text · Article · Sep 2006 · Journal of Dairy Science

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Publication Stats

74 Citations
21.13 Total Impact Points

Institutions

  • 2007-2015
    • University of Birjand
      • Department of Animal Sciences
      Birdjand, Khorāsān-e Jonūbī, Iran
    • University of Guelph
      • Department of Animal and Poultry Science
      XIA, Ontario, Canada
  • 2006-2008
    • Ferdowsi University Of Mashhad
      • Department of Animal Sciences
      Mashad, Razavi Khorasan, Iran