Jamal Fayazi

• PhD
• Head of Department at Agricultural Sciences and Natural Resources University of Khuzestan

The keratin-degrading bacterium Bacillus licheniformis secretes a keratinase with potential industrial interest. Here, the Keratinase gene was intracellularly expressed in Escherichia coli BL21(DE3) using pET-21b (+) vector. Phylogenetic tree analysis showed that KRLr1 is closely related to Bacillus licheniformis keratinase that belongs to the seri...

Background: The Schistosoma parasite is responsible for several overlooked tropical diseases, which cause significant economic losses in livestock. This parasite is increasingly found in the central areas of the northern provinces of Iran. To generate an effective treatment, it is crucial to understand thoroughly how the parasite’s genes work. Curr...

Many antigens such as BM86, BM91, BM95, Serpins, Haa86, Subolesin, etc. have been used as vaccines against ticks. Recently, voraxin-α has been reported as a candidate for the anti-tick vaccine. Structure, characterization and molecular cloning of voraxin-α from Amblyomma hebraeum, Rhipicephalus appendiculatus and Rhipicephalus microplus were report...

In this research, Data of milk yield, fat and protein percentage of Khuzestani buffalo were used. The daily records of milk yield were collected in the south-west of Iran where buffalo experienced a hot climate. The data set was constructed with 8,123 records of 1,430 first lactation buffalo. A univariate random regression model (RR/CF) was applied...

Introduction5 Oocyte maturity includes nuclear and cytoplasmic maturity, both of which are important for embryo fertilization. Cytoplasmic maturation involves the redistribution of a range of organelles, including mitochondria. The nuclear and cytoplasmic mammalian oocytes maturation is a complex process nuclear maturation is demonstrated by extrus...

Recent developments in DNA sequencing and computational algorithms have leading to the discovery of higher value SNPs. In this research, several computational algorithms were used to express the effect of ESRα gene SNPs on protein function in buffalo genome. In this study genomic information of 112 Khuzestani buffaloes that revealed by Affymetrix-9...

In order to compare the two methods of artificial neural networks (ANN) and multiple linear regression to predict yearling weight used records of 736 Raieni goat. Effects and variables influencing on yearling weight were; animal sex, type of birth, birth year, birth season, herd and characters related to birth weight, three months weight, six month...

Background: Because milk and milk products play a vital role in human nutrition, dairy cattle farmers are working in increasing milk production or changing its composition. For this reason, researching the genes which play an important role in milk production and its composition is of high value. Information theory is an interdisciplinary branch of...

The objective of this study was to identify known intergenic lncRNAs related to biological pathways of acidosis in Holstein calves using ruminal tissue. Two groups of healthy calves (N=3) and affected by acidosis (N=3) were compared. Paired-end sequencing method was performed using the Hiseq2500 illumine platform. Hisat2 software was used to align...

The bovine leukaemia virus (BLV) is a retrovirus responsible for enzootic bovine leukaemia (EBL) disease, the most common cattle disease leading to high annual economic losses to the cattle breeding industry. Virus monitoring among the sheep and cattle herds is usually done by vaccination. Inactivated virus vaccines can partially protect the livest...

The present study was carried out to determine the effects of fenugreek powder (FP) and extract (FE) on performance, egg quality, blood parameters and immune responses of laying hens. One-hundred and fifty Leghorn laying hens were used in a completely randomized design with five treatments and five replicates for eight weeks. Treatments were variou...

Simple Summary Economics of feedlot beef production dictate that beef cattle must gain weight at their maximum potential rate; this involves getting them quickly onto a full feed of high fermentable diet which can induce the ruminal acidosis disease. The molecular host mechanisms that occur as a response to the acidosis, are mostly unknown. For ans...

The transition from normal forage to a highly fermentable diet to achieve rapid weight gain in the cattle industry can induce ruminal acidosis. The molecular host mechanisms that occur in acidosis are largely unknown. Therefore, the histology and transcriptome profiling of rumen epithelium was investigated in normal and acidosis animals to understa...

Sub-acute ruminal acidosis is a type of metabolic disorder in which affected cattle show a considerable depression of rumen pH. This leads to a dramatic decline in productivity and consequent loss of income for many dairy farms. The objective of the present study is to identify and characterize novel long non-coding RNAs (lncRNAs) in Holstein cattl...

Article history: The aim of this experiment was to investigate rumen fermentation and some blood parameters of dromedary camels fed with C3 and C4 forage. Four fistulated dromedary adult camels were fed with diets as a changeover design, 30 days for each period. The diets included alfalfa hay + wheat straw (C3 forage) and atriplex+ suaeda + seidlit...

Background: The stress is one of main factors effects on production system. Several factors (both genetic and environmental elements) regulate immune response to stress. Objectives: In order to determine the major immune system regulatory genes underlying stress responses, a learning Bayesian network approach for those regulatory genes was appli...

Background: Oocyte maturation begins at the embryonic stage and continues throughout life. The effect of Follicle- Stimulating hormone (FSH) on gene of genes was evaluated using GEO access codes for the data set GSE38345. Materials and Methods: The microarray data containing the gene expression information from cow oocytes show that their maturatio...

The native goat breeds could be better managed and their genetic diversity to be conserved through identification of population genetic structure. Total of 299 animals from six goat breeds, which are major native breeds of Iran, were used to study their genetic structure and understand relationship among the breeds using SSR markers on 13 microsate...

1 ، ‫بهار‬ 1317 ‫ص‬ ‫فحه‬ 171-171 ‫اسنیپ‬ ‫حرارتی‬ ‫شوک‬ ‫پروتئین‬ 07 ‫گاومیش‬ ‫داکینگ‬ ‫مدلینگ‬ ‫همولوژی‬ ‫چکیده‬ ‫پیش‬ ‫اثرات‬ ‫بینی‬ SNP ‫ژن‬ ‫غیرمترادف‬ Hsp70 ‫و‬ ‫ساختار‬ ‫بر‬ ‫گاومیش‬ ‫عملکرد‬ ‫پروتئین‬ ‫آن‬ Prediction of nonsynonymous SNP consequences in heat shock protein 70 (Hsp70) gene of bubalus bubalis on structure and function of its p...

Using of genetically markers is one of the best methods to evaluate animal improvement. It is reported that Booroola gene has additive for litter size and ovulation rate in sheep. In this study 125 blood samples were collected of Lory-Bakhteyarian (80 sheep) and Arabian sheep (45 sheep). DNA of blood samples was extracted by modified salting out me...

The envelope glycoprotein (protein G) of bovine ephemeral fever virus (BEFV) has been identified as a plausible vaccine candidate against the BEF disease. In the present study, G1 epitope of the G glycoprotein gene was cloned in an eukaryotic expression vector, pcDNA3.1(+), under the control of the human cytomegalovirus (CMV) promoter. The pcDNA3.1...

This experiment was conducted to evaluate of rumen cellulolytic bacteria activity of dromedary camels fed cultivable and pasture forage. Fistulated dromedary camels were fed for 35 days in 2 periods as cross over design with cultivable and pasture forage (4 camels per forage). Then rumen fluid was collected after morning feeding. Inoculant of cellu...

کراتيناز از آنزيم هاي پروتئوليتيک در طبيعت مي باشد. اين آنزيم تنها در حضور سوبستراي کراتين توليد مي شود و عمدتاً پيوندهاي دي سولفيدي را مورد هدف قرار مي دهد. در اين مطالعه از سويه باکتريايي Bacillus licheniformis که قبلا از بستر مرغداري جدا شده بود، براي استخراج ژن کراتيناز استفاده شد. واکنش تکثير ژن کراتيناز با روش PCR با استفاده از DNA ژنومي استخ...

There is considerable behavioural evidence demonstrating stress reactions in birds. Behaviour of birds can affect their performance parameters. Also, nutritional factors may affect the behaviour of laying hens. Dietary deficiencies, such as minerals can increase feather-pecking behaviour and cannibalism. In the present study, we evaluate the effect...

In some part of world for intensive production of fattening of lambs, they are fed with high amount of concentrate. However this pattern of feeding often affect negatively of rumen fermentation (Mould et al., 1983). Ionophores act by interrupting transmembrane movement and intracellular equilibrium of ions in certain classes of bacteria and protozo...

The objectives of our study were to propose a growth curve and to develop a mathematical model to describe the body weight of pullet experiencing severe heat stress (42°C). Poultry producers who raise their own replacement pullets can control their pullet’s growth, condition and development. Many of the problems which occur during the early part of...

In comparison to 44% crude protein of soybean meal (SBM), the protein content of rapeseed meal (RSM) is about 35-40% and has a physiologically suitable amino acid combination in animal nutrition, but RSM contains nutritionally unfavourable substances such as glucosinolates, sinapin, tannin, phytate and non starch polysaccharides (NSP) (Kocher et al...

In comparison to the 44% crude protein of soybean meal (SBM), the protein content of rapeseed meal (RSM) is about 35-40% and has a physiologically suitable amino acid profile for animal nutrition. However, RSM contains nutritionally unfavourable substances such as glucosinolates, sinapin, tannin, phytate and non starch polysaccharides (Kocher et al...

Feathers, a largely wastes produced in poultry industries represents a rich insoluble protein resource containing over 90% keratins. The aim of this study was to analyze and characterize the diversity of keratinase producing bacteria in broiler chicken litter house. A total of 10 gram samples were cultured in skim milk agar. The isolates were cultu...

پیشرفتهای اخیر در توالییابی DNAو الگوریتمهای محاسباتی منجر به تشخیص SNPهایی با ارزش بالاتر شده است. در این تحقیق از چندین الگوریتم محاسباتی برای بیان تاثیر SNPهای ژن استروژن رسپتور آلفا ( )ESRαبر عملکرد پروتئین در ژنوم گاومیش استفاده شد.در این بررسی از تراشه Affymetrix90KSNPدر 112گاومیش خوزستانی استفاده شده است. دو SNP )Argenin43Histedin,T )ronin15A...

Keratin constitutes ~90% broiler feather weight which could be recycled into feed by keratinase producing microorganisms. Broiler litter samples were cultured in skim milk and keratine agar for keratinolytic microbes and isolated by microscope, biochemical characterization and molecular analysis. Keratin in feathers was extracted for feather meal b...

This study was conducted to compare the effects of electron beam (EB) and gamma ray (GR) irradiation treatments at doses of 10, 20 and 30?kGy on chemical composition, protein quality and protein digestibility of cottonseed meal (CSM). GR irradiation in all doses significantly decreased the crude fiber of samples compared to raw CSM. Free and total...

Background: Lori sheep is an Iranian heavy breed known for its superiority in terms of disease resistance, adaptability to the mountainous west of the country and meat production potential. Objective: to estimate and compare the inbreeding coefficient in Lori sheep, and its impact on growth traits. Methods: data and pedigree information were coll...

In this experiment eight 1,600 mL dual-flow continuous culture fermenters were used to measure the fermentation pattern of cultivable and pasture forages in camel. Two adult camels were used as rumen inocula donors. Fermenters were fed with 120 g of DM/d in 3 equal portions at 08:00, 16:00, and 24:00 h. The trial contained two treatments of four re...

This study was conducted to identify pedigrees and inbreeding depression on growth traits in sheep Lori population. For this study pedigree information and body weight at different ages (birth weight, weaning wight, 6 month weight and 9 month weight) of 6440 lambs from 273 rams and 1955 ewes during the years 2001 to 2010 was collected from the Lore...

Summary Background: Lori sheep is one of the relatively heavy Iranian breed known for its superiority over other breeds in terms of disease resistance, adaptability to western zone mountainous regions of the country, and potential for high meat production. Objective: The aim of current study was to estimate and compare the amount of inbreeding coe...

The aim of present study was to evaluate the effect of purslane extract on performance, cecal microflora composition and immune responses of broiler chickens. One hundred and ninety two 1-day old broiler chicks (Ross 308) were allocated randomly in 4 groups with 4 replicates to receive diets supplemented with 0 (control), 100, 200 and 300 ppm of pu...

This study reports on the phenotypic and genetic (co)variance components for reproductive traits in Zandi sheep, using between 1,859 and 2,588 records obtained from 577 ewes. The data were collected from the Khojir Breeding Station of Zandi sheep in Tehran, Iran from 1994 to 2008. The basic traits were litter size at birth (LSB), litter size at wea...

Major Histocompatibility Complex (MHC) plays a pivotal role in antigen presentation for eliciting immune responses against invading pathogens. The best-characterized genetic control of disease resistance and immune response in animals are associated with MHC. Therefore in this study polymorphism of ovar-DRB1 in DNA samples of 111 heads Arabi sheep...

Major Histocompatibility Complex (MHC) plays a pivotal role in antigen presentation for eliciting immune responses against invading pathogens. The best characterized genetic control of disease resistance and immune response in animals are associated with MHC. Therefore, in this study polymorphism of Ovar-DRBl in DNA samples of 111 heads Arabi sheep...

About 288, 1day old Ross 308 broiler were used to evaluate the effect of zinc on performance and carcass characteristics of broiler during Heat Stress (HS). Broilers raised in either a thermoneutral (TN, 23.9 degrees C constant) or HS (23.9-35 degrees C cycling) environment were fed an adequate zinc diet (45 mg kg(-1)) and high zinc diets (90 and 1...

Metabolic changes in blood serum may be reflected in the biochemical composition of follicular fluid and can be indirectly influenced oocyte quality. The purpose of this study was to investigation metabolite composition variations of follicular fluid and blood serum in Iranian dromedary camels during the peak breeding season (October-march). Follow...

The present study investigated the occurrence of autosomal recessive genetic disease, factor XI (FXI), in Khuzestan native cows and Iranian Holstein cattle. Genomic DNA was isolated from the blood of the cows (n = 330). Exon 12 of the Factor XI gene of the cows was amplified by polymerase chain reaction (PCR). Additionally, all cows were confirmed...

This study was conducted to evaluate economic value of clove and oregano cultivated in Iran on economic value of broiler chickens diets. About 271 day old Ross strain broiler chickens were allocated to 9 experimental diets with 3 replications in a 3X3 factorial experiment. Treatments were 0, 0.5 and 1% of clove and oregano (AH) that used as top-dre...

This study was conducted in order to calculate the economic weights of milk yield and fat percent for the dairy buffalo production systems in the southwest of Iran. We collected herd structure, milk yield and fat percent records, revenues and costs of 30 buffalo herds under the rural system in six cities for a 14-months period of calving interval....

Woody materials processing by hydrothermal inexpensive fish feed more economic benefit will be along in aquaculture. In the current study, the first treatment (control) was barley grits merely 5 percent of body weight. In the second and third treatment 5 and 10 percent of body weight Pit (sugarcane industry byproduct) was used instead of the barley...

The part of the bovine genome which shows a superior action and explains the maj or part of variation of the economical production traits were known as QTL. PIT1 gene which is also termed hormone factor-1 is a pituitary-specific transcription factor which has responsible for pituitary development and hormone expression in mammals. The mam function...

Genetic parameters and (co) variance components were estimated on 2445 lambs from 139 sires and 804 dams for Birth Weight (BW) on 2237 lambs from 127 sires and 784 dams for Weaning Weight (WW) and on 2098 lambs from 115 sires and 739 dams for Average Daily Gain (ADG). The data collected from Animal Science Research Station of Agricultural and Natur...

The Bovine Lymphocyte Antigen (BoLA-DRB3) gene encodes cell surface glycoproteins that initiate immune responses by presenting processed antigenic peptides to CD4 T helper cells. DRB3 is the most polymorphic bovine MHC class II gene which encodes the peptide-binding groove. Since different alleles favor the binding of different peptides, DRB3 has b...

A genetic mutation with major effects on the litter size in sheep was recently identified in the growth differentiation factor (GDF9) gene of the TGF-B super family (transforming growth factor). GDF9 gene has been localized to chromosome 5 in sheep. In order to evaluate the GDF9 gene polymorphism, blood samples were collected randomly from 42 Kordi...

The main objective of this study was to estimate genetic and phenotypic potential of milk yield, fat yield and fat percentage traits. Data analyzed were 3350 records from buffalo during 1989-2008 were collected. Co-variance components were estimated using uni and multiple traits of animal model with the Restricted Maximum Likelihood method. In this...

The present study was carried out to investigate the effects of environmental factors on pre-weaning growth traits in Zandi sheep. Data (birth weight, weaning weight and average daily gain from birth to weaning) were collected from lambs that have been born during 1993-2008 in Khojir Research Station (Tehran-Iran) and analyzed using SAS 9.1 softwar...

The effects of probiotic and antibiotic administration were studied in an experiment, using 24 newborn calves. Calves were randomly assigned to three experimental groups (eight calves for each group). Probiotic (2 g day-1) and antibiotic (2 g day-1) was added in their daily milk intake until age of weaning. After the 3 days, all calves (including c...

The present study was carried out to investigate the effects of environmental factors on pre-weaning growth traits in Zandi sheep. Data (birth weight, weaning weight and average daily gain from birth to weaning) were collected from lambs that have been born during 1993-2008 in Khojir Research Station (Tehran-Iran) and analyzed using SAS 9.1 softwar...

In order to estimate variance components 8843 test day milk and fat yields records from first lactation Najdi cattle were used. Data obtained between years of 1989-2005 by animal breeding station of Najdi cattle located in Shooshtar city. Random regression models were studied in respect of different orders of fitting for fixed and random regression...

Native animal and poultry in every province are valuable genetic resourses. Khouzestan province native poultry is one of the resourses that bacuase of adaptating to environment. The growth hormone gene is a candidate genes controling the metabolic and physiologic actions. Polymorphism within this gene is a detectable parameter. In order to study an...

Prolactin is a polypeptide hormone with multiple functions, secreted mainly by the anterior pituitary gland this experiment conducted to investigate of prolactin polymorphism in buffalo population in Khuzestan of Iran. DNA was isolated from blood samples of 85 buffalos of different areas. In this study, used Polymerase Chain Reaction-Restriction Fr...

Calpastatin has been known as candidate gene in muscle growth efficiency and meat quality. This gene has been located to chromosome 5 of sheep. In order to evaluate the calpastatin gene polymorphism, random blood sample were collected from 111 Arabic ram sheep from different regions. The DNA extraction was based on Boom et al. (1989) method. Exon a...

Butyrophilin plays an important role in secretion of milk lipid. The present study describes polymorphism of butyrophilin gene. This is the first study of butyrophilin gene polymorphism in Najdi cattle of Iran. We used the polymerase chain reaction-restriction fragment length polymorphism (PCR- RFLP) technique to screen for DNA polymorphism in 109...

This experiment was done to evaluate the potential use of steam treated bagasse pith (SPB) in feeding of Lori Ewes. Forty eight ewes with similar condition from many flocks of autumn of Lori sheep were included in this experiment. The ewes divide into 4 groups of 12 sheep. The ewes allocated into 4 different levels of SPB (0, 5, 10 and 15%) for pre...

This study was carried for investigation interaction between genotype and environment for milk and fat production traits of Holstein cattle in western provinces of Iran. In this study, used 2213 records of first lactation Holstein dairy cattle in this zone of Iran. These data get from Iranian Animal Breeding Center from 1996-2006. The edited sets i...

A deterministic bio-economic model was used to estimate the economic values of different traits in Arabic sheep native to the Khuzestan province of Iran. In the studied system, variable costs accounted for about 98.5% of the total costs and among variable costs, feed costs had the highest proportion with 70.7%. Revenue sources included meat, wool,...

The aim of this study was to investigate the effects the addition of multi enzyme preparation and the replacement value of canola meal (CM) for soybean meal (SBM) on performance broiler chickens. A total of 384 (Ros-308) day-old broiler chicks were allotted randomly to 8 dietary treatments each in 4 replicates of 12 birds per pen. The 2 enzyme leve...

This experiment was conducted to investigate the effect of ionophores monensin and lasalocid on performance and carcass characteristics in fattening Arabi lambs. Thirty fattening male lambs with similar conditions (22.14±0.72 kg body weight) were included in this experiment from day 90 until day 150. Three high concentrate diets containing with 30...

This study was conducted to evaluate the genetic structure of B. xanthopterus populations in Karoon, Krkhe and Jrahi rivers in southwest of Iran using Polymerase Chain Reaction (PCR) and Restriction Fragment Length Polymorphism (RFLP) analysis of mitochondrial DNA (mtDNA). Amplified mtDNA (cytochrome b and part of tRNA^Glu) genes were dig...