Volume 53 (2022)
Volume 52 (2021)
Volume 51 (2020)
Volume 50 (2019)
Volume 49 (2018)
Volume 48 (2017)
Volume 47 (2016)
Volume 46 (2015)
Volume 45 (2014)
Volume 44 (2013)
Volume 43 (2012)
Volume 42 (2011)
Volume 41 (2010)
Volume 40 (2009)
Volume 39 (2009)
Effect of different sources of magnesium in prepartum diets on energy metabolism, ‎performance and health of Holstein cows

Forood Ehsanbakhsh; Hamid Amanlou; Mohammad Hossein Shahir

Volume 53, Issue 1 , May 2022, , Pages 13-22

http://dx.doi.org/10.22059/ijas.2021.315586.653843

Abstract
  The aim of this study was to evaluate the effect of different source of magnesium in prepartum diets on productive performance, blood metabolites, insulin resistance and health disorders in transition cows. Sixty cows from 21 days prepartum were randomly assigned to 4 experimental treatments. Treatments ...  Read More

The effect of replacement soybean meal with fish meal on milk production, milk ‎composition and reproductive performance in repeat breeder Holstein cows ‎

Farhad Kamali Dehkordi; Hamid Amanlou; Nima Sadeghi Broujeni

Volume 52, Issue 4 , February 2022, , Pages 271-283

http://dx.doi.org/10.22059/ijas.2021.329251.653844

Abstract
  The objective of this experiment was to determine the effects of fish meal supplementation on productive and reproduction performance in repeat breeder Holstein cows. Two hundred and sixty-one multiparous Holstein cows with at least three consecutive unsuccessful inseminations, without clinically detectable ...  Read More

Effect of replacing solvent soybean meal with extruded soybean meal on ‎performance and metabolic status of Holstein fresh cows

Mostafa Shami; Hamid Amanlou; Tahere Amirabadi Farahani; Najme Eslamian Farsuni

Volume 52, Issue 3 , December 2021, , Pages 153-162

http://dx.doi.org/10.22059/ijas.2021.320545.653817

Abstract
  The objective of this study was to compare solvent soybean meal with extruded soybean meal at 135°C on performance and metabolic status of fresh Holstein cows. Twenty-four Holstein cows (BW± SD; 614.45± 28.33) were randomly assigned to 1 of 2 experimental treatments from caving until ...  Read More

The effects of feeding strategies to reduce starch levels on performance, serum ‎metabolites and liver function in Holstein fresh cows

Najme Eslamian Farsuni; Hamid Amanlou; Tahere Amirabadi Farahani

Volume 52, Issue 2 , September 2021, , Pages 91-107

http://dx.doi.org/10.22059/ijas.2021.317516.653813

Abstract
  The study objective was to evaluate the effects of reducing dietary starch content in fresh cow diets while maintaining NDF levels by substituting barley grain (BG), corn silage (CS), or both with beet pulp (BP) on DMI, lactation performance, serum mineral and metabolites concentrations, liver enzymes ...  Read More

Effect of high dietary zinc, copper and manganese concentration and source on ‎plasma progesterone and reproductive performance in repeat breeder cows

Vahid Gholami; Hamid Amanlou; Davood Zahmatkesh; Nima Sadeghi

Volume 51, Issue 4 , March 2021, , Pages 263-273

http://dx.doi.org/10.22059/ijas.2020.305609.653786

Abstract
  We used 263 Holstein repeat breeder dairy cows (193±58 DIM) based on randomized complete design. Animals in control group (no supplementation), groups 2 and 3 supplemented with 2,244 mg of zinc, 295.5 mg copper and 480 mg manganese either inorganic trace minerals (ITM) and chelated (glycinates) ...  Read More

Effects of feeding different trace mineral sources on performance and health of ‎Afshari ewes and lambs

Hamid Amanlou; Marziyeh ‎ Khebri; Behnam Rostami; Najme Eslamian Farsuni; Tahere Amirabadi Farahani; Mohsen Khalili

Volume 51, Issue 3 , December 2020, , Pages 183-192

http://dx.doi.org/10.22059/ijas.2020.294836.653763

Abstract
  The aim of this study was to investigate the effects of feeding different trace minerals (Zn, Cu, Mn, Se and Co) sources from 4 weeks pre- lambing until 5 week post-lambing on performance and health of Afshari ewes and lambs. Thirty six pregnant Afshari ewes were randomly assigned to 1 of 3 treatments ...  Read More

Effects of nutritional grouping on productive performance and culling rate and its ‎causes in dairy herd

Morteza Salehpour; Hamid Amanlou; Hamid reza Mirzaei-Alamouti; Najmeh Eslamian Farsouni

Volume 50, Issue 4 , February 2020, , Pages 341-350

http://dx.doi.org/10.22059/ijas.2020.287871.653732

Abstract
  The aim of the present study was to investigate the effect of single nutritional grouping (TMR1) compared to multinutritional grouping (TMR4) on productive performance and milk composition during a complete lactation period. Four hundred and eighty-four lactating Holstein cows were blocked based on parity ...  Read More

Investigation of the occurrence of liver abscesses in lactating and dry Holstein cows and its effect on some blood parameters and histology of hepatocytes

Shahrzad Joz-Ghasemi; Hamid Amanlou; Mehdi Dehghan Banadaki; T.G. Nagaraja

Volume 48, Issue 4 , March 2018, , Pages 473-481

http://dx.doi.org/10.22059/ijas.2017.238836.653547

Abstract
  The aim of the present study was to evaluate the incidence of liver abscess in lactating and dry Holstein cows and its effect on some blood parameters and histology of hepatocytes. The liver of 577 lactating and dry Holstein cows at the time of slaughter were examined in two abattoirs in Iran. Cow’s ...  Read More

Effects of tylosin injection in dry period on the performance and serum chemistry in dairy cows after parturition

Shahrzad Jozghassemi; Hamid Amanlou; Mehdi Dehghan-banadaki; T.G. Nagaraja

Volume 48, Issue 3 , December 2017, , Pages 379-389

http://dx.doi.org/10.22059/ijas.2017.238769.653546

Abstract
  To investigate the effects of tylosin injection in dairy cows at dry period on performance, milk composition and some blood parameters in subsequent lactation, 120 Holstein cows with a mean weight of 720±20Kg were used. Treatments were no tylosin (treatment 1; control group), injected 0.025 (treatment ...  Read More

Effect of reducing metabolizable protein with added rumen-protected lysine and methionine on the performance of the pregnant Afshari ewes

Seyyed Saeid Mousavi; Hamid Amanlou; Ali Nikkhah; Ali Moustafa Tehrani; Hamid Reza Mirzaei Alamouti

Volume 47, Issue 1 , July 2016, , Pages 89-102

http://dx.doi.org/10.22059/ijas.2016.61673

Abstract
  The aim of this study was to investigate the effect of reducing metabolizable protein with rumen-protected Lysine and Methionine in diet during the last 5 weeks of gestation on performance and blood parameters of Afshari ewes and lambs. Twenty five mature (once lambing) ewes in a Unbalanced complete ...  Read More

Effects of crude protein levels in the shortened close-up period on health and milk production of Holstein cows

Hamid Amanlou; Zahra Hosseini Firoozkoohi; Tahere Amirabadi Farahani; Najme Eslamian Farsouni

Volume 47, Issue 1 , July 2016, , Pages 123-133

http://dx.doi.org/10.22059/ijas.2017.61675

Abstract
  This study was performed to evaluate the effects of crud protein (CP) level on dry matter intake in prepartum period, productive performance and health of fresh cows. Twenty multiparous Holstein cows were assigned randomly to one of two dietary treatments. Dietary treatments were treatment 1, 13% CP ...  Read More

Effect of feeding frequency on digestibility, milk production and composition in lactating cows: A meta-analysis and meta-regression

Hamidreza Mirzaei-Alamouti; Mehdi Kazemi-Joujili; Hamid Amanlou; Mina Vazirigohar

Volume 46, Issue 3 , October 2015, , Pages 301-314

http://dx.doi.org/10.22059/ijas.2015.56424

Abstract
  The objective of this study was to evaluate the effect of frequency of feeding total mixed ration (TMR) on total-tract digestibility, milk production and composition in lactating cows, using meta-analysis and meta-regression approaches. Data of fourteen experiments having containing 25 comparisons between ...  Read More

A Comparison of the Effects of either Four or Six Times of Daily Milking during Early Lactating on Production Performance and Blood Metabolites in Holstein Cows

Reza Nazarzade; Mehdi Dehghan-Banadaki; Hamid Amanloo; Hamidreza Mirzaee Almoti

Volume 44, Issue 1 , June 2015, , Pages 45-52

http://dx.doi.org/10.22059/ijas.2013.32130

Abstract
  The objective fllowed in the present study was to evaluate the effects of different milkingfrequencies on milk production and on blood metabolites in Holstein cows. Sixty-six fresh Holsteincows were allocated to two treatments namely: 4 (4x) vs. 6 times (6x) of daily milking, during the first3 months ...  Read More

Comparison of nutrients and cost-income from two alfalfa harvesting methods (hay or silage)

Davood Zahmatkesh; Hamid Amanlou; Ghader Dashti

Volume 45, Issue 1 , April 2014, , Pages 17-25

http://dx.doi.org/10.22059/ijas.2014.51745

Abstract
  This study was conducted to evaluate consumption inputs, production costs, nutrient composition and performance in production of alfalfa hay and alfalfa silage. Therefore, data on alfalfa hay production were collected from 75 farms in Zanjan province, using a face to face questionnaire in the year 2012. ...  Read More

Effect of a Reduction of Dietary Protein on Milk Production and on Blood Components of Lactating Holstein Cows during Heat Stress

Vahid Gholami; Hamid Amanlou

Volume 44, Issue 4 , January 2014, , Pages 355-365

http://dx.doi.org/10.22059/ijas.2013.50379

Abstract
     The aim followed in the present research was to study the effects of reduction in dietary crude protein on milk production and on blood components in lactating Holstein dairy cows when in heat stress. A number of 63 Holstein dairy cows (71 ± 16.5 DIM) were chosen to be made use of ...  Read More

Productive and Metabolic Responses of Fresh Holstein Cows to Calcium Borogluconate Subcutaneous Injection in Prepartum vs. Immediately following Calving

hamid amanlou; najme eslamian; tahere amirabadi

Volume 43, Issue 3 , October 2013, , Pages 307-316

http://dx.doi.org/10.22059/ijas.2012.29338

Abstract
  The objective of this study was to determine the effect of calcium borogluconate injection 24, 48 hours prepartum and immediately postpartum on Dry Matter intake at day of calving, milk yield, and as well on blood metabolites during the first 21 days of postpartum in cows fed anionic diets. Thirty six ...  Read More

Effects of Different Dry Period Length on the Reproductive and Productive Performance of Holstein Cows During the Subsequent Lactation

fatemeh amini; hamid amanloo; mohammad javad zamiri; najme eslamian

Volume 43, Issue 2 , September 2012, , Pages 183-191

http://dx.doi.org/10.22059/ijas.2012.28527

Abstract
  To evaluate the effects of different dry period lengths on milk yield, milk composition, reproductive performance and energy balance in dairy cows, 30 Holstein breeds (average 270 days pregnant) were made use of in a randomized complete block design. Cows were assigned to three treatments (60, 45 and ...  Read More

A Comparison of the Nutritional Value of Rapeseed Meal and Cottonseed Meal in Holstein Cows Feeding

ali hedayati; hamid amanloo; ali nikkhah; tahereh amirabadi; najmeh eslamian

Volume 43, Issue 1 , June 2012, , Pages 61-70

http://dx.doi.org/10.22059/ijas.2012.24910

Abstract
  To Compare the nutritional value of rapeseed meal and cottonseed meal in Holstein cows, feeding 20 lactating Holstein cows each with an average weight of 580± 34 kg and 100± 10 days in milk were studied in a randomized complete block design. The experimental diets consisted of 4 levels of 0, 8, 14 ...  Read More

Effects of Varying Crude Protein and Rumen Undegradable Protein on Performance of Holstein Fresh Cows

Tahereh Amirabadi Farahani; Hamid Amanlou; Najmeh Eslamian Farsuni

Volume 42, Issue 4 , March 2012, , Pages 297-309

Abstract
  Thirty multiparous Holstein dairy cows with average body weights of 687±15 kg and body condition scores of 3.25±0.15 were allocated to 1 out of each 3 groups, immediately after parturition (DIM=11) and in a completely randomized design. The first group was fed diet low in Rumen Undegradable Protein ...  Read More

The Effect of Degradability Rates of Different Starch Sources on Performance and Blood Metabolites of Holstein Dairy Cows in their Early Lactation

Hamid Amanlou; Behzad Alizadeh; Mohammad-Hossein Shahir; Tahereh Amirabadi Farahani

Volume 42, Issue 3 , January 2011, , Pages 207-219

Abstract
  In order to examine the effect of degradability rates of different starch sources on performance of Holstein dairy cows in their early lactation, twenty multiparous lactating Holstein cows (586±33.7 BW; 48.15±9.32 DIM) were made use of in a randomized complete block design of four treatments during ...  Read More

Effects of Wheat Grain in Pre-Partum Diets on Plasma Metabolites and Hormones in Peripartum Cows

Hamidreza Mirzaei Almouti; Hamid Amanlou; Kamran Reza Yazdi; Armin Touhidi

Volume 41, Issue 3 , December 2010, , Pages 253-263

Abstract
  Sixty eight Holstein cows, 38 primiparous and 30 multiparous, were employed in a randomized complete block design to evaluate the effects of 2 diets of varied rumine fermentable carbohydrate sources (Corn Grain (CG) and Wheat Grain (WG)) on blood metabolites and hormones during periparturint period. ...  Read More

Effect of Zinc, Copper and Chlortetracycline Supplementation on Fat Thickness and Longissimus muscle in Young Holstein Bulls

Hadi Fagari Nobijari; Hamid Amanlou; Mehdi Dehghan Banadaki; Seyed Hosein Hoseini Sabeghi; Khosro Ghazvinian

Volume 41, Issue 1 , May 2010

Abstract
  Three hundred eighteen young Holstein bulls (initial BW = 375 ± 17.5 kg) were randomly allotted to one of six treatments in a completely randomized design for 56 d the treatments of which consisted of 1) the basal diet (control); 2) basal diet plus 30 mg of Cu/kg of DM as CuSO4; 3) basal diet plus 150 ...  Read More

A Comparison of Lactating Dairy Cows Performance Fed Rations Formulated by National Research Council 2001 and Cornell Pennsylvania Miner

Ali Nikkhah; Mehdi Kazemi; Hamin Amanlou; Hsan Mehrabani

Volume 40, Issue 3 , December 2009

Abstract
  The precision and accuracy of National Research Council (NRC 2001) vs. Cornell Pennsylvania Miner (CPM) softwares were evaluated. Sixteen lactating dairy cows (8 in second lactation and 8 in third, with days in milk of 55 ± 31, body live weight = 641 ± 53 Kg, milk yield =31.2 ± 2.5 Kg/day), were assigned ...  Read More

Effect of Prepartum Dietary Carbohydrate Source on Feed Intake, Energy Balance, Rumen Fermentation, and Milk Yield and Components of Holstein Cows

hamid reza mirzaii alamooti; kamran rezayazdi; hamid amanloo; armin tohidi

Volume 40, Issue 1 , June 2009

Abstract
  Sixty eight Holstein cows, 38 primiparous and 30 multiparous ones, were employed in a randomized complete block design, blocked to evaluate the effects of 2 diets in various ruminal fermentable carbohydrate sources (Ground Corn vs Rolled Wheat) on rumen fermentation and performance during preparturient ...  Read More

Effect of Different Levels of Sugar Beet Pulp as a Non Forage Fiber Sources on Performance of Early Lactating Cows

hamid amanloo; mehran aboozar; ali nikkhah

Volume 39, Issue 1 , February 2009

Abstract
  Twenty four multiparous Holstein cows in their early stage of lactation with a mean of 59±20 DIM and a mean of 615±40.5 Kg of BW were employed in a complete randomized block design to evaluate the effects of different levels of sugar beet pulp in a partial replacement for alfalfa, the only source of ...  Read More