mohamad yazarloo
Volume 19, Issue 1 , May 2017, , Pages 145-157
Abstract
In order to study the impact of different levels of dietary metabolizable energy and crude protein on performance and nitrogen and energy metabolism of Japanese quail during growth period, 360 day-old Japanese quails were used in a 3×3 factorial experiment with three levels of metabolizable energy ...
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In order to study the impact of different levels of dietary metabolizable energy and crude protein on performance and nitrogen and energy metabolism of Japanese quail during growth period, 360 day-old Japanese quails were used in a 3×3 factorial experiment with three levels of metabolizable energy (2750, 2850 and 2950 Kcal/kg) and three levels of crude protein (24, 26 and 28 percent) in a completely randomized design with four replicates and 10 birds in each replicate. The feed intake and body weight gain were measured weekly and feed conversion ratio was calculated. The nitrogen intake, excretion and retention as gram per bird per day, percent of nitrogen intake and gram nitrogen per kilocalorie per metabolizable energy consumed and dietary apparent metabolizable energy content were measured during 26 to 28 days of age period. The results of this study showed that birds fed diet containing 2850 kcal/kg metabolizable energy and 26 percent crude protein had significantly (P< 0.05) higher daily weight gain and higher nitrogen retention per each unit of metabolizable energy consumed and better feed conversion ratio. According to the results of this experiment, it seems that the best growth rate, the maximum nitrogen retention and the best feed efficiency of growing Japanese quail are achieved by feeding diets containing 2850 kcal/kg metabolizable energy and 26 percent crude protein. Therefore, these values can be recommended as metabolizable energy and crude protein requirements of Japanese quail growing diet.
Volume 18, Issue 4 , December 2016, , Pages 647-659
Abstract
Bovine mastitis is an inflammation disease of the mammary gland that impose considerable costs to the dairy industry. Regulatory mechanisms of this disease is complex and controlled by various gene regulatory elements and more studies are needed to better understand this disease. In the present study ...
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Bovine mastitis is an inflammation disease of the mammary gland that impose considerable costs to the dairy industry. Regulatory mechanisms of this disease is complex and controlled by various gene regulatory elements and more studies are needed to better understand this disease. In the present study aimed to better understand of regulatory elements involved in mastitis, milk samples of two groups of healthy and infected cows during time series of 0, 12, 24, 36 and 48 hours after contamination were collected. The miRNA-seq data obtained from the milk samples and using the advanced bioinformatics, novel miRNAs, their targets and probability functions, isomirs and novel miRNAs* were identified. The results led to the identification of 92 novel miRNA including 26 miRNAs with homologous and 66 miRNAs without homologous genes in other species. Investigation of the functional groups of predicted targets genes, confirmed the roles of new miRNAs in response to internal and external stimulations, apoptosis and production of immunoglobulin. Furthermore, 135 novel miRNAs were identified. Also, 493 novel isomeric sibling miRNAs (isomers) were discovered that immune related functions of these isomirs were demonstrated in some species like human and mouse. Identification of miRNAs target genes with associated functions in mastitis, including safety, apoptosis and inflammation, can indicated the possible regulatory roles of the identified miRNAs in mastitis.
Mohammad Yazarloo; Seyed Davood Sharifi; Farid Shariatmadari; Abdolreza Salehi
Volume 15, Issue 1 , July 2014, , Pages 1-10
Abstract
In order to determine the optimal levels of energy and protein in grower diet of Japanese quail, 360 dayold Japanese quails were used in a 3×3 factorial arrangement of dietary treatments that comprised threelevels of metabolisable energy (2750, 2850, and 2950 Kcal/kg) and three levels of crude ...
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In order to determine the optimal levels of energy and protein in grower diet of Japanese quail, 360 dayold Japanese quails were used in a 3×3 factorial arrangement of dietary treatments that comprised threelevels of metabolisable energy (2750, 2850, and 2950 Kcal/kg) and three levels of crude protein (24, 26and 28 percent) with four replicates per treatment in a completely randomized design. Feed intake andbody weight were measured weekly and feed conversion ratio was calculated. At 35 d of age, four birds(from both sexes) from each replicate were randomly selected and killed following blood sampling toevaluate carcass traits. The blood samples were assayed for the sera concentrations of growth hormone.Results indicated that birds fed on diets containing 2850 kcal/kg metabolisable energy and 26 percentprotein had higher daily weight gain and better feed conversion ratio and carcass yield (P<0.05). The seraconcentration of growth hormone was higher in birds fed on diet containing 2750 kcal/kg metabolisableenergy (P<0.05). This study indicated that Japanese quails can grow faster and more efficiently on dietcontaining 2850 kcal/kg metabolisable energy and 26 percent protein. Therefore, the diet containing 2850kcal/kg metabolisable energy and 26 percent protein could be recommended as dietary metabolisableenergy and protein requirements for growing Japanese quails.
Yonous Miar; A. Reza Salehi; Seyed Ahmad Aleyasin; Somayeh Raouf zadeh
Volume 13, Issue 1 , September 2011, , Pages 33-40
Abstract
Myostatin (MSTN), also known as growth and differentiation factor-8 (GDF8), is a member of the transforming growth factor beta (TGF-?) superfamily that decreases growth in mammals. A single nucleotide polymorphism (SNP) in the myostatin (GDF8) 3'UTR of OAR2 has been known as responsible for muscular ...
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Myostatin (MSTN), also known as growth and differentiation factor-8 (GDF8), is a member of the transforming growth factor beta (TGF-?) superfamily that decreases growth in mammals. A single nucleotide polymorphism (SNP) in the myostatin (GDF8) 3'UTR of OAR2 has been known as responsible for muscular hypertrophy in foreign breeds. In this study, in order to identify single nucleotide polymorphisms (SNP) in the myostatin (GDF8) gene, blood samples were collected from a population set of Chaal (n = 20), Zandi (n = 24) and Zel sheep (n = 17) lambs. Genomic DNA was extracted from the whole blood samples and polymerase chain reaction (PCR) was carried out in order to amplify a 1003 bp fragment of the target gene and PCR products sequenced to detect single nucleotide polymorphism (SNP). Comparison of the sequence of the target gene in Gene Bank with our results of sequencing showed all animals had the g. + 6223G allele in the 3'UTR of myostatin which do not cause double muscle (DM) phenotype.
Zohreh Shirmoradi; Abdol Reza Salehi; Rostam Pahlavan; Mohamad Reza Mollasalehi
Volume 12, Issue 2 , October 2010, , Pages 21-28
Abstract
In this study, the genetic and phenotypic trend of milk and fat production traits were estimated form 94121 cows’ first lactation records and that for age at first calving and calving interval traits were estimated from 41900 cows’ reproduction records. Data related to Iranian Holstein dairy ...
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In this study, the genetic and phenotypic trend of milk and fat production traits were estimated form 94121 cows’ first lactation records and that for age at first calving and calving interval traits were estimated from 41900 cows’ reproduction records. Data related to Iranian Holstein dairy cattle from 1995 to 2003. Data were analyzed, using univariate and mulitivariate animal model with genetic group effects. The heritability of milk yield, fat yield and fat percentage, age at first calving and calving interval were 0.29 (±0.01), 0.22 (±0.01), 0.38 (±0.01), 0.055 (±0.01) and 0.034 (±0.005), respectively. The linear regression of average breeding values and phenotypic values of cows for a trait on birth year provided an estimate of genetic and phenotypic trend, respectively. There genetic trend for milk yield, fat yield and Calving Interval were 53.5 kg, 1.07kg and 0.46 day, respectively. Their trend for fat percentage and Age at First Calving were -0.011% and -0.23 day, respectively. There was a positive phenotypic trend for milk yield, fat yield and fat percentage. This trend was negative for Age at First Calving and Calving Interval.