Papers by Tarlan Farahvash
Download Forage species availability, preference and grazing behaviour of Muturu and Zebu cattle ... more Download Forage species availability, preference and grazing behaviour of Muturu and Zebu cattle in Asaba, Delta State, Nigeria Muturu Zebu Original Research, C39 pii: S222877011300039-3 Udeh I, Isikwenu JO and Obika GC. Online J. Anim. Feed Res., 3(5): 197-201, 2013. ABSTRACT: The objectives of this study were to identify the forage species available, species preference and to compare the grazing behaviour of Muturu and Zebu cattle under semi intensive system of management in Delta State University, Asaba Campus, Asaba Nigeria. Eleven cattle made up of one bull and ten cows each of Muturu and zebu were used for the study. There were five grazing areas. The total number of plant species, their population density and the most significant forage species preferred by the cattle were noted by the use of the quadrat method. Seventeen forage species were classified comprising twelve grasses, two legumes, two shrubs and one tree, which formed most of their food. Among the forage species id...
Animal Science, 1998
Estimates of (co)variance components and genetic parameters were obtained for birth (no. = 3909),... more Estimates of (co)variance components and genetic parameters were obtained for birth (no. = 3909), weaning (no. = 3425), yearling (no. = 2763), and final weight (no. = 2142) for Gobra cattle at the Centre de Recherches Zootechniques de Dahra (Senegal), using single trait animal models. Data were analysed by restricted maximum likelihood. Four different animal models were fitted for each trait. Model 1 considered the animal as the only random effect. Model 2 included in addition to the additive direct effect of the animal, the environmental effect due to the dam. Model 3 added the maternal additive genetic effects and allowed a covariance between the direct and maternal genetic effects. Model 4 fitted both maternal genetic and permanent environmental effects. Inclusion of both types of maternal effects (genetic and environmental) provided a better fit for birth and weaning weights than models with one maternal effect only. For yearling and final weights, the improvement was not signif...
Scientific Reports
Mitochondrial DNA (mtDNA) lineages are recognized as important components of intra- and interspec... more Mitochondrial DNA (mtDNA) lineages are recognized as important components of intra- and interspecific biodiversity, and allow to reveal colonization routes and phylogeographic structure of many taxa. Among these is the genus Cervus that is widely distributed across the Holarctic. We obtained sequences of complete mitochondrial genomes from 13 Cervus taxa and included them in global phylogenetic analyses of 71 Cervinae mitogenomes. The well-resolved phylogenetic trees confirmed Cervus to be monophyletic. Molecular dating based on several fossil calibration points revealed that ca. 2.6 Mya two main mitochondrial lineages of Cervus separated in Central Asia, the Western (including C. hanglu and C. elaphus) and the Eastern (comprising C. albirostris, C. canadensis and C. nippon). We also observed convergent changes in the composition of some mitochondrial genes in C. hanglu of the Western lineage and representatives of the Eastern lineage. Several subspecies of C. nippon and C. hanglu h...
Journal of Applied Animal Research
In order to investigate the possibility of compensatory growth, three different feed restriction ... more In order to investigate the possibility of compensatory growth, three different feed restriction methods (low nutrient density, restricted feed intake and restricted time of feeding) were compared to the control (ad libitum feeding). 400 Ross hybrid strain mail broilers were used in a complete randomized design experiment. The treatments were: T1, was low energy diet (2800 Kcal ME/Kg DM) offered ad libitum, T2, was high energy diet (2900 Kcal ME/Kg DM) of which 15% was restricted, T3, was high energy diet (2900 Kcal ME/Kg DM) that was restricted twice a week and T4 was the control group that received high energy diet (2900 Kcal ME/Kg DM) ad libitum. Results showed that weight gain was significantly high in T2 during starter phase compared to other treatments. Feed intake increased significantly in T2 during starter and finisher phase, thus total feed intake was also higher in the same group. No significant change was observed in feed conversion ratio, carcass characteristics and fee...
Iranian Journal of Applied Animal Science, 2016
In order to have a good perspective of wild animals, it is necessary to determine their populatio... more In order to have a good perspective of wild animals, it is necessary to determine their population and genetic structure. It provides an opportunity to decide on better conservation managements. In the wilderness, due to the escapable nature and sometimes not having the distinguishable bisexual appearance, sex identification could be difficult by observing animals. The X- and Y- chromosome linked amelogenin (AMELX and AMELY) due to its independent and different evolution on both chromosomes could play an important role in sex determining of wild animals. To determine the sex ratio and also the genetic structure of AMELX and AMELY in Maral deer (Cervus elaphus maral), 37 samples were collected from populations were located in north parts of Iran. Results showed that in female deer, the amelogenin gene had one banding patterns (231 bp, for X chromosome) and the male deer had two banding pattern (231 bp and 180 bp for X and Y chromosomes, respectively). The AMELY of Maral had in/del mu...
African Journal of Biotechnology, 2011
In order to estimate genetic parameters of the cocoon weight (CW), cocoon shell weight (CSW) and ... more In order to estimate genetic parameters of the cocoon weight (CW), cocoon shell weight (CSW) and cocoon shell percentage (CSP) of three industrial lines of silk-worm (number 31, 103 and 107), data were collected from three successive generations. (Co)variance components were as follows: additive genetic variation (δ 2 g) and environmental variation (δ 2 e ) of traits and additive genetic covariance (cov g1, 2 ) and environmental covariance (cov e1, 2 ). Heritability of traits was estimated with maximum likelihood procedure (REML) by using algorithms (DFREML) based on a three trait animal model. Data were from half-sibs and the heritability and genetic, phenotypic and environmental correlation were estimated between traits. The highest heritability for CW was estimated in lines 31 and 107 (0.58 and 0.58, respectively) and the lowest heritability for CW was in line number 103 (0.28). The highest and lowest heritability for CSW was in lines 107 and 103 (0.70 and 0.01, respectively). Al...
Indian Journal of Animal Research, 2012
In order to evaluate the relation between body measurements (body length, chest girth, body depth... more In order to evaluate the relation between body measurements (body length, chest girth, body depth and rump width) with live weight and carcass traits (warm carcass weight, warm carcass efficiency, warm carcass without fat-tail weight and warm carcass without fat-tail efficiency), records from 100 (50 Macoei and 50 Afshari) male lambs were collected. The genetic group had a significant effect on the warm carcass efficiency and live weight; while, Afshari male lambs had higher efficiency. Body length was affected by genetic group; while, Afshari male lambs had bigger amounts. Both genetic groups had high correlations between chest girth × live weights, rump width × live weight, chest girth × warm carcass without fat-tail weight, live weight × warm carcass without fat-tail weight, warm carcass weight × warm carcass without fat-tail weight. The results showed that chest girth was the best index in predicting live weight at 6 months of age in both genetic groups. Considering the correlat...
Iranian Journal of Applied Animal Science, 2013
This study was conducted to investigate the hair production and fleece characteristics of hairy g... more This study was conducted to investigate the hair production and fleece characteristics of hairy goats according to the sex and age of animals. The material of the study consisted one total data of 73 hair goats, which were between more than one year-old and one year-old Lori goats from both sexes (26 males and 47 females). The overall fleece weight, fiber length, lock length, washing yield, hair fiber diameter, coefficient of variation f diameter, breaking load, tenacity and elongation were 429 ± 23.7 g, 6.2 ± 0.3 cm, 8.9 ± 0.4 cm, 73.9 ± 0.6%, 82.6 ± 1.8 micron, 24.3 ± 0.8%, 7.6 ± 0.3kgf, 10.2 ± 0.4 gf/Tex and 14.0 ± 1.0%, respectively. It was found that age and sex had a significant effect on fleece weight and lock length. Furthermore, fiber length, fiber diameter and coefficient of variation of fiber diameter were affected by age of Lori goats. Adults showed a tendency to present higher fiber tenacity (10.3±0.6 gf/tex) and lower fiber elongation (12.4±1.4%).
Iranian Journal of Applied Animal Science, 2019
The common buzzard (Buteo buteo) is a bird of prey with Eurasia distribution. Buteo buteo from Ir... more The common buzzard (Buteo buteo) is a bird of prey with Eurasia distribution. Buteo buteo from Iran, has an important role in the ecological cycle of the north and the northwest parts of Iran, now is suffering from illegal hunting. Blood samples from 50 Buteo buteo birds from rehabilitation center of Pardisan Park, Tehran, Iran were taken to evaluate and study the genetic diversity of these birds using 10 microsatellite markers. The population was a random population involved birds from different habitats of Buteo buteo from Iran. The results of this study showed that the population had a high genetic diversity and the highest and lowest heterozygosity was observed at Bbu30 and Bbu33 markers (0.860 and 0.514), respectively. Expected heterozigosity (He) was ranged from 0.638 in Bbu22 to 0.832 in Bbu30. The lowest number of alleles (Na) and effective number of alleles (Ne) were observed at Bbu22 and Bbu30, respectively. The Bbu17 had the highest and Bbu22 had the lowest F-statistics v...
Endocrine, Metabolic & Immune Disorders - Drug Targets, 2022
Background: Polycystic ovary syndrome (PCOS) is the most common endocrine abnormality among women... more Background: Polycystic ovary syndrome (PCOS) is the most common endocrine abnormality among women of reproductive age. Insulin resistance is known as the hallmark of PCOS that leads to hyperinsulinemia and type 2 diabetes in PCOS patients. Objective: This study aimed to evaluate the expression pattern of IRS1 as a candidate gene in insulin resistance development in the PCOS rat models. Methods: In this study, estradiol valerate was used for PCOS induction. Then, all of the rats were divided into five experimental groups and treated with Astragalus hamosus extract. Ethanol was used for extraction by Soxhlet, and extracts were analyzed by GC-MS. Ovarian morphology was analyzed using histological experiments. Finally, the expression of IRS1 and hormonal titration of testosterone and insulin were evaluated using qRT-PCR and ELISA assays, respectively. Results: Induction of PCOS led to an increase in body weight, which decreased after treatment with the extract. Histological assessment d...
International Journal of Poultry Science, 2006
Asian Journal of Animal and Veterinary Advances, 2008
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Papers by Tarlan Farahvash