A5036137082- Genetic and phenotypic traits in livestock
- Reproductive Physiology in Livestock
- Livestock Management and Performance Improvement
- Genetics and Plant Breeding
- Effects of Environmental Stressors on Livestock
- Genetic Mapping and Diversity in Plants and Animals
- Silkworms and Sericulture Research
- Ruminant Nutrition and Digestive Physiology
- Animal Nutrition and Physiology
- Insect Utilization and Effects
- Agricultural Economics and Policy
- Economics of Agriculture and Food Markets
- Milk Quality and Mastitis in Dairy Cows
- Insect-Plant Interactions and Control
- Fish Ecology and Management Studies
- Sperm and Testicular Function
- Wheat and Barley Genetics and Pathology
- Agriculture Sustainability and Environmental Impact
- Sustainable Agricultural Systems Analysis
- Fish Biology and Ecology Studies
- Livestock and Poultry Management
- Cancer-related molecular mechanisms research
- Bird parasitology and diseases
- Agricultural and Rural Development Research
- Animal Diversity and Health Studies
University of Guilan
2015-2024
BOKU University
2009
Objective Embryo death in the early stages, primarily caused by lethal alleles homozygous state, is one of important challenges dairy cattle breeding. The availability large-scale genomic SNP data has proven to be a promising tool for identifying recessive genetic defects. This study was conducted identify and genes causing embryo Holstein using omics transcriptomic level. Methods High-density Bovine770K array genotypes 3117 samples whole-genome sequences (WGS) 743 cows were utilized SNPs,...
Genetic parameters for basic and composite reproductive traits in Mehraban sheep were estimated. Data included 10 257 records on performances of 5813 lambs from 69 sires 603 dams which collected 1994 to 2011 the breeding station Hamedan province, western Iran. Studied litter size at birth (LSB), weaning (LSW), mean weight per lamb born (LMWLB), weaned (LMWLW), total (TLWB), (TLWW). Test significance include fixed effects statistical model was performed using GLM procedure SAS. estimated with...
Genetic parameters for first lactation milk production based on test day (TD) records of 56319 Iranian Holstein cows from 655 herds that calved between 1991 and 2001 were estimated with restricted maximum likelihood method under an Animal model.Traits analyzed yield fat percentage.Heritability TD highest in second half the lactation, ranging 0.11 to 0.19 0.038 0.094 percentage respectively.Estimates these traits 0.24 0.26 respectively.Genetic correlations individual high consecutive (>0.9)...
The objective of this study was to describe the population structure and inbreeding, quantify their effects on weights at different ages Mehraban sheep in Iran. analysis based pedigree information 26990 animals 10278 body weight records from birth yearling age. Data were collected during 1994 2011 by breeding station sheep. analyzed using CFC program. Inbreeding all calculated INBUPGF90 All grouped into three classes according inbreeding coefficients: first class included non-inbred (F=0);...
Background: dystocia is one of the most economically significant secondary traits in dairy cows and has adverse effects on subsequent survival, health, performance mothers offspring. Objective: aim this study was to estimate direct maternal genetic parameters for calving ease (CE) its relationship with productive reproductive Iranian Holstein cows. Methods: data from 1991 through 2011 were collected Animal Breeding Center Iran, contained 132,831 records CE, 183,203 including 305-d adjusted...
Accuracy of genomic prediction was compared using three parametric and semi methods, including BayesA, Bayesian LASSO Reproducing kernel Hilbert spaces regression under various levels heritability (0.15, 0.3 0.45), different number markers (500, 750 1000) generation intervals validating set. A historical population 1000 individuals with equal sex ratio simulated for 100 generations at constant size. It followed by extra gradually reducing size down to 500 in 200. Individuals 200 were mated...
1. The objectives of the current study were to investigate effect incidence rate (5%, 10%, 20%, 30% and 50%) ascites syndrome on expression genetic characteristics for body weight at 5 weeks age (BW5) AS compare different methods parameter estimation these traits. 2. Based stochastic simulation, a population with discrete generations was created in which random mating used 10 generations. Two restricted maximum likelihood Bayesian approach via Gibbs sampling parameters. A bivariate model...
Native breeds in any country are a national capital, and their preservation is of great importance. Cattle Guilan (NCG) one the few pure native Iran West Asia region. During last decade, NCG population has decreased by more than 40%. This study aimed to identify significant single nucleotide polymorphisms (SNPs) candidate genes associated with meat production traits using genome-wide association (GWAS). The blood hair samples were collected from 72 individuals genotyped Illumina Bovine SNP50...
The objectives of this study were to estimate economic values (EVs) for three production traits (milk, fat and protein yields) longevity develop a national selection index. proposed Iranian index was compared with indices other countries in the world. A simple appropriate model used describe Holstein dairy cattle industry under an system. Production parameters data collected from two farms Tehran province. EVs estimated at farm level breeding perspectives (maximized profit, minimized costs,...
Abstract. The objective of this study was to estimate genetic parameters for milk and fat yields in Khuzestan buffaloes Iran. A total 5 258 production records the first three lactations obtained from Animal Breeding Centre Iran between 1993 2009 were used analysis. Genetic estimated by multivariate restricted maximum-likelihood (REML) procedure Wombat program. averages 2 220.0 kg 137.6 lactation; 236.8 137.9 second 303.6 143.3 third lactation, respectively. Heritability estimates 0.06 0.24...