Jafar Pish Jang Aghajeri

The high expense of genotype determination and the low accuracy of the evaluation in a small number of genotyped samples when using genomic data and genetic markers to perform genomic evaluations are two major problems. The effect of levels of genetic markers in an F2 population obtained from Two-way crossing of native Iran chicken with low growth...

Avian leukosis viruses (ALVs) are retroviruses that can induce tumors, as well as reduce growth rate and productivity in chicken. The tumor virus B (TVB) locus encodes the cellular receptor that mediates an infection through ALVB, ALVD, and ALVE subgroups of ALV. Two single nucleotide polymorphisms (SNPs) at nucleotide positions 172 and 184 of the...

BACKGROUND: Chicken major histocompatibility complex region (MHC) is important in the productive traits, immune responses, resistance to infectious diseases and phylogenetic relationships. OBJECTIVES: This study was investigated for single nucleotide polymorphisms of MHC region related to thebimmune system in commercial broiler and layer chickens....

BACKGROUND: Chicken major histocompatibility complex region (MHC) is important in the productive traits, immune responses, resistance to infectious diseases and phylogenetic relationships. OBJECTIVES: This study was investigated for single nucleotide polymorphisms of MHC region related to the immune system in commercial broiler and layer chickens....

The growth hormone of chickens affects the growth and development of chickens, egg production, body type, appetite control, reproduction, and the response of the body immune system. Several studies have shown that the growth hormone gene is a candidate gene for chicken economic traits. The polymorphisms of this gene can be used to improve productio...

Introduction1 Chicken major histocompatibility complex (MHC) region are important in immune responses, resistance to diseases, and relationships with evolution processes. The chicken major histocompatibility complex is composed of two gene regions: the B and Y (Rfp-Y) loci, both located on micro chromosome 16. The B locus includes three gene classe...

Prolactin gene plays a key role in the initiation and continuation of broodiness in chickens. Dopamine in the pituitary gland reduces the effect of prolactin. This research was conducted to investigate the allelic polymorphism of dopamine D1 receptor gene (DRD1) using PCR-RFLP method in Marandi and Mazandarani indigenous chickens. In this study, bl...

Genetic resistance to diseases is very important in chickens. Determining the genetic diversity of the chicken immune system is one of the main options for examining differences in resistance to diseases. Two hundred blood samples were taken from indigenous chickens populations of Common, West Azarbaijan, Marandi and Mazandarani and genomic DNA was...

In the present study, the polymorphism of four loci including of TLR4, IL2, IgL and IFNγ were investigated in 100 commercial broiler and layer chickens using PCR-RFLP technique and enzymes of Tsp509I, Sau96I and HphI. In TLR4 marker site, two alleles of C (two bands of 138 and 119 bp) and G (three bands of 119, 99 and 39 bp), In IL2 locus, two alle...

In this study, allelic polymorphism in candidate genes of the TLR4 and IL2 involved in the immune system in four Iranian indigenous chickens were examined using PCR-RFLP technique. A total of 200 birds including common, West Azerbaijan, Marandi, Mazandarani indigenous chicken strains were selected. For detection of mutation in TLR4 (257 bp) and IL2...

In this study, allelic polymorphism in candidate genes of Mx and SLC11A1 involved in the immune system in some Iranian Common, West Azarbaijani, Marandi, Mazandarani indigenous and commercial chicken strains examined using PCR-RFLP technique. A total of 300 birds were selected and for detection of mutation in Mx and SLC11A1 genes the PCR products w...

To assess genetic diversity and maternal origin of Turkish and Iranian native chicken breeds, we analyzed the mtDNA D-loop sequences of 222 chickens from 2 Turkish (Denizli and Gerze) and 7 Iranian (White Marandi, Black Marandi, Naked Neck, Common Breed, Lari, West Azarbaijan, and New Hampshire) native chicken breeds, together with the vailable ref...

Genetic diversity which exists among animals has been created as a result of evolution process during so many years and considering different problems such as economic conditions and the time duration of performance of this program, first, genetic potential and similarities existing among different races should be examined. According to sensible ch...

This study investigated the correlation of cryopreserved sperm membrane integrity with viability and motility in ram semen diluted in five different extenders and storage in LN (Liquid Nitrogen). Semen was collected with an artificial vagina from five adult rams. The ejaculates were pooled and diluted in five different extenders: Milk, Sodium citra...

The aim of this study was to investigate the efficacy of five extenders in contributing to the outcome of semen cryopreservation in Zandi ram. Semen was collected with an artificial vagina from five adult Zandi ram. The ejaculates were pooled and diluted in five different extender: Milk, Sodium Citrate, Tris, Lactose and Sucrose. The diluted semen...

This experiment was conducted to evaluate the effects of using different levels of green grape leaves on performance, carcass traits, blood biochemical and immunity parameters of broilers. Experiment was carried out in a completely randomized design with 210 broilers (Ross-308) in 5 treatments and 3 replicates (with 14 birds in each replicate) from...

The effects of Nigella Sativa seedsof medicinal plants on performance, carcass characteristics and humoralimmunity of broiler chickens were studied in this experiment.At first 225 one day old broiler chicks were divided to5 groups and 3 replicates of 15 chicks in each group. Experimental groups included T1, control group with no Nigella Sativaseeds...

This experiment was carried out to determine effect of dietary with deferent level of poly germanderon performance, egg quality, blood biochemical of laying hens. This study was carried out with 300of Hy-line (W36) hens in 4 treatment groups,3 repetitions and 25 hens for each group. The groups were F1) Control group, F2, F3, and F4 with 100, 150, a...

This study has investigated the effects of addition ofachillea and butyric acid on performance and serum composition of broiler chickens. In this study that starts 1 day following until 42 days there are four treatments, at first 225 day old broiler chicks were divided to 15 groups of 15 chicks each. Each 3 groups randomly assigned to one of the th...

The objective of this study was conducted to evaluate the effects of Cuminum cyminum and Probiotic on performance and serum composition of broiler chickens. A total of 400 one day-old male Ross-308 broiler chicks were allocated into 4 dietary treatments and 5 repetitions with 20 chickens in each group, including P1) basal diet with no supplement as...

This experiment was conducted to evaluate the effects of probiotic (Pr) and pennyroyal (Mentha pulegium L.) on performance of laying hens. Hy-Line laying hens (n=216), 34 wk old, were randomly housed in windowed cages in a completely randomized design with factorial arrangement of 3×2 with six treatments and three replicates (12 birds per each) and...

A study was conducted to investigate the effects of varying levels of nettle (Urtica dioica L.), pennyroyal (Mentha pulegium L.) medicinal plants and enzyme on performance and egg traits of laying hens. In this study 288 Hy Line (W36) laying hens from 24-36 weeks of egg were used as 2×3 factorial experiment with 2 levels of nettle (0, 0.5%) and pen...

This study was conducted to investigate the effects of using different levels of coriander oil on carcass traits, blood biochemical and immunity parameters of broilers.In this study that started 1 day following until 42 days, at first 375one day old broiler chicks were divided to5 groups and five replicates of 15 chicks each. Experimental groups in...