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)
Comparison of differential expression profiles of candidate genes related to fertility ‎traits using transcriptome perspective based on RNA-Seq in Holstein dairy cows

Farzad Ghafouri; Mostafa Sadeghi; Abolfazl Bahrami; Rostam Abdollahi-Arpanahi; Arash Javanmard; Seyed Reza Miraei-Ashtiani

Volume 52, Issue 4 , February 2022, , Pages 217-229

http://dx.doi.org/10.22059/ijas.2021.322630.653824

Abstract
  Genetic selection for increasing milk production and economic profitability in the dairy industry has been associated with reduction in reproductive performance, including lower embryo survival and pregnancy loss. The main purpose of this study was to use the transcriptome profiles of endometrial tissue ...  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 diluted semen temperature and sperm concentration on sperm penetration ‎rate, fertility and hatchability of aged broiler breeder hens

Hossein Sharideh; Mojtaba Zaghari; Seyed Jafar Mirbehbahani

Volume 52, Issue 2 , September 2021, , Pages 133-140

http://dx.doi.org/10.22059/ijas.2020.307142.653792

Abstract
  The current study aimed to optimize artificial insemination in aged broiler breeder hens in two experiments. In the first experiment, the effect of (two) different diluted semen temperatures (5 and 25 °C) of Hubbard rooster (40 roosters, 58 weeks of age) on fertility, hatchability and sperm penetration ...  Read More

Evaluation of effective management practices on pregnancy rate in several herds of ‎Holstein dairy cows in Iran

Sara Hassanvand-Javanmard; Ali Sadeghi-Sefidmazgi

Volume 51, Issue 4 , March 2021, , Pages 253-262

http://dx.doi.org/10.22059/ijas.2020.300802.653776

Abstract
  Pregnancy rate is an important trait in productivity of the dairy herds. To evaluate the effective management practices on pregnancy rate of Iranian Holstein herds, the reproductive management data of 60 herds (Tehran, Isfahan, Alborz, and Mashhad provinces) were collected using a questionnaire based ...  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

The effect of zinc oxide levels with different particles sizes on reproductive ‎performance of hens and roosters of broiler breeders ‎

Masoud Barzegar; Mojtaba Zaghari; Mahdi Zhandi; Mostafa Sadeghi

Volume 51, Issue 2 , August 2020, , Pages 129-137

http://dx.doi.org/10.22059/ijas.2020.298159.653775

Abstract
  In this research the effects of different levels and particle sizes of zinc oxide on reproductive performance of hens and roosters of broiler breeders were evaluated. A total of 200 female Ross 308 broiler breeders in a completely randomized design with 4 treatments, 5 replicates and 5 birds per each ...  Read More

Comparison of homozygosity in SNP and ROH sites in Holstein dairy cows with high ‎and low production levels

Hojatollah Mousapour; Ardeshir Nejati-Javaremi; Mohammad Moradi-ShahreBabak; Mahdi Saatchi

Volume 50, Issue 3 , December 2019, , Pages 249-258

http://dx.doi.org/10.22059/ijas.2018.246333.653587

Abstract
  Increased homozygosity resulted from mating of relatives is considered as one of the challenges faced in dairy farming industry which has attracted the attentions. This research has been conducted to measure homozygosity based on SNP and ROH in high- and low-producing Holstein cows. In current research, ...  Read More

Effect of different levels of dietary vitamin A on reproductive and productive parameters in Japanese quail

Masoumeh Davodzadeh; Saleh Tabatabaei Vakili; Khalil Mirzadeh; Ali Aghaei

Volume 48, Issue 2 , September 2017, , Pages 251-259

http://dx.doi.org/10.22059/ijas.2017.235166.653534

Abstract
  The purpose of this research was to evaluate the effect of five levels of vitamin A including 0, 4,000, 8,000, 16,000 and 32,000 international units per kilogram of diet on productive and reproductive parameters in Japanese quail. 320 adult Japanese quails were used in a complete randomized block design ...  Read More

The effect of Letrozole on frozen-thawed sperm quality and fertility of broiler breeder roosters

Mahbub Mohammadi; Ahmad Zare-Shahaneh; Saeid Zeinoaldini; Mahdi Ansari

Volume 48, Issue 1 , June 2017, , Pages 141-151

http://dx.doi.org/10.22059/ijas.2017.225029.653494

Abstract
  This study was carried out to evaluate the effect of the oral administration of Letrozole on blood testosterone level and frozen-thawed sperm quality and fertility of broiler breeder roosters. Twenty 50-week-old Ross 308 roosters were randomly divided into four groups (five roosters per each), individually ...  Read More

Effect of Calving Difficulty on Milk Production, Fertility and Estimation of Economic Value for Direct and Maternal Calving Difficulties

Heydar Ghiasi; Ardeshir Nejati javaremi; Abbas Pakdel; Hassan Mehrbani yeganeh

Volume 42, Issue 1 , July 2011, , Pages 57-64

Abstract
  Economic data and performance records from 10 Iranian Holstein dairy cattle herds, as well as milk production and fertility records from Iranian Center of Animal Breeding and Animal Production Improvment were used to estimate the effect of calving difficulty on milk production, fertility and as well ...  Read More

Genetic Relationships between Linear Type Traits, Milk Yield and Open Day in Holstein Cows of Iran

MohammadReza BakhtiariZadeh; Mohammad Moradi ShahreBabak; Abbas Pakdel; Ahmad Moghimi

Volume 40, Issue 4 , March 2010

Abstract
  The objective of the present study was to estimate the relationship between genetic parameters for 13 linear type traits, and milk yield as well as open day in Holstein cattle of Iran. Three data sets of: 16502 (type traits), 16557 (milk yield) and 11631 (open days) records related to the first calving ...  Read More