Animal Science Research Institute of Iran

Karaj, Iran

Animal Science Research Institute of Iran

Karaj, Iran
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Bafti M.S.,Islamic Azad University at Kermān | Salehi M.,Animal Science Research Institute of Iran | Moumen S.M.S.,Agricultural and Natural Resources Research Center of Iran | Ezatkhah M.,Islamic Azad University at Kermān
Animal Production Science | Year: 2017

It has been long established that the right balance in trace elements is required to ensure animal health and optimal growth. Hair is particularly rich in trace elements such as sulfur and it has been proposed that the quality of fibres derived from hair may be influenced by the amount of trace elements present. In this study, we evaluated the quality and mineral content of Raeini goat cashmere over the course of 1 year. Potential factors that can influence the mineral content of cashmere were further considered, including sex, age, seasons, herd variables and serum trace elements. Twenty-four male and 48 female Raeini goats were selected and a total of 216 fibre samples were taken during two 6-month intervals of annual fibre growth from nomadic, rural and breeding station flocks. In addition, samples of blood, soil, range forage, animal ration (hand feeding), and surface and deep water from four seasons were also obtained. The results indicate a positive correlation between cashmere percentage and zinc content. In addition, we also observed a negative correlation between cashmere tenacity and its zinc, sulfur and serum copper content. These results provide new insights into the factors affecting cashmere quality, and will aid in designing new studies for determining the best combination of factors that lead to optimal cashmere quality. © CSIRO 2017.

Aliabad A.J.,Animal Science Research Institute of Iran | Seyedabadi H.,Animal Science Research Institute of Iran
World Applied Sciences Journal | Year: 2011

Insulin-Like Growth Factor-I (IGF-1) may play important roles in growth of multiple tissues and it is encoded by the IGF1 gene. The current study was designed to investigate the associations of IGF1 gene polymorphism on chicken growth and body composition traits. Genomic DNAs were extracted from 400 chickens belonged to four Iranian commercial broiler lines. Genotyping for the IGF1 gene by using PCR-RFLP method and Hinfl restriction endonuclease showed a mutation in the 5'UTR of the IGF1 gene, near a putative TATA box. In addition, the IGF-1 genotypes were verified by DNA sequencing. Polymorphism in IGF1 gene was significantly (P<0.05) associated with abdominal fat weight (AFW), drumstick weight (DW), wing weight (WTNW), percentage of carcass weight (%CW), percentage of drumstick weight (%DW), percentage of breast muscle weight (%BMW) and percentage of wing weight (%WTNW). This research not only suggests that IGF1 gene could be a candidate gene that affects body composition traits in the chicken, but also suggest that the use of molecular genetic markers associated with the IGF1 gene can be used in a selection program for low abdominal fat. © IDOSI Publications, 2011.

Razmkhah M.,Tarbiat Modares University | Rezaei J.,Tarbiat Modares University | Fazaeli H.,Animal Science Research Institute of Iran
Animal Feed Science and Technology | Year: 2017

This study was performed to assess the effects of dietary substitution of different levels of Jerusalem artichoke (Helianthus tuberosus) tops silage (JATS) for corn silage (CS) on feed intake, digestibility, rumen parameters, blood metabolites, microbial nitrogen (N) synthesis (MNS) and N retention in Shal sheep (live body weight of 65.3 ± 2.3). Four iso-energetic and iso-nitrogenous diets were formulated, in which CS was replaced by different levels (0, 180, 360 or 540 g/kg of diet dry matter [DM]) of JATS. The diets were assigned randomly to one of the groups (5 sheep/group) in a completely randomized design for a 31-days period (21 days for adaptation and 10 days for sample collection). Diets were offered as total mixed ration to ensure 10% orts. Daily feed intake, diet digestibility, rumen and blood parameters, MNS and N retention were determined. The data were analyzed using the PROC MIXED of SAS. The DM intake (DMI) and DM digestibility (DMD) were not affected by dietary treatments. With replacing CS by JATS, the ruminal ammonia-N concentration tended to increase (L, P = 0.088), total volatile fatty acids (VFA) tended to decrease (L, P = 0.089), but rumen protozoa, molar proportions of individual VFA and pH remained unchanged. Feeding sheep with diets containing JATS instead of CS had no effects on blood parameters, except urea-N, which was increased (L, P = 0.032) as the level of JATS rose in diet. No difference was observed in urinary purine derivatives and MNS. Urinary N tended to enhance (L, P = 0.080) and N retention tended to decrease (L, P = 0.065) when the sheep received diets with the increasing levels of JATS. Overall, the partial substitution of JATS for CS, up to 540 g/kg of DM, was possible in diet of Shal sheep without adverse effects on DMI, DMD, rumen fermentation, blood parameters and MNS, although blood urea-N raised slightly and total ruminal VFA and N retention somewhat declined. The aerial parts of the fresh JA can be preserved as a valuable silage to use in sheep diets. © 2017 Elsevier B.V.

Bahmani H.R.,Ferdowsi University of Mashhad | Tahmoorespur M.,Ferdowsi University of Mashhad | Aslaminejad A.A.,Ferdowsi University of Mashhad | Abbasi M.A.,Animal science Research Institute of Iran | Ebnabbasi R.,Agricultural and Natural Resources Research Center of Iran
Journal of Animal and Veterinary Advances | Year: 2011

Decline of native area, population size and breeding herds are indicators of imminent danger of breed extinction in the near future. Because of occurrence and continuation of these conditions for Markhoz goat population, this research was conducted to determine its spread, latest demographic data and the most important criteria and degree of endangerment. Data were collected through interview with the herders and monitoring the flocks in their native area and other locations in mating season. Distribution map was prepared using GIS and demographic data were used to evaluate Degree of Endangerment (DE). In the latest year, population size, the number of breeding females and males, effective population size and inbreeding rate were 2456, 1332, 70, 266 heads and 0.19% in each generation, respectively. Except for inbreeding rate, other criteria in 2009 were lower than those in 2008. In this study, herders mentioned economic factors as the main reason for decreasing of the population. Investigation of criteria in four major evaluation systems to determine DE showed that Markhoz goat is in demographic and geographical risks and imminent danger of decreasing variation within breed. Intense concentration of 77% of its population within a circle of 7 km radius has exposed the breed at the risk of epidemic diseases and other natural disasters. Thus, the primary conservational measures by the government as well as complimentary studies for providing comprehensive conservation program appear to be necessary. © Medwell Journals, 2011.

Tajabadi N.,University Putra Malaysia | Tajabadi N.,Animal Science Research Institute of Iran | Mardan M.,University Putra Malaysia | Abdul Manap M.Y.,University Putra Malaysia | And 3 more authors.
Apidologie | Year: 2011

This is the first assay that describes the isolation and identification of strains and species of Lactobacillus from the honey stomach of the Asiatic giant honeybee, Apis dorsata. Samples of honeybees were collected from A. dorsata colonies in different bee trees, and Lactobacillus was isolated from honey stomachs using selective media. The isolates were Gram-stained and tested for catalase reaction. The 16S rRNA genes from extracted DNA of bacterial colonies were amplified with polymerase chain reaction using lactobacilli genus primers (27F and 1492R). All bacterial 16S rRNA genes were sequenced and deposited in GenBank. The 34 isolated strains yielded three distinct rRNA sequences of 15 different strains. Lactobacillus sequences isolated from the bees' honey stomachs were comprised of Lactobacillus kunkeei related-sequences (56%) with other abundant sequences being related to other Lactobacillus sp. (38%) and Lactobacillus vermiform (6%). These strains can be good candidates for potential application as probiotics in honeybees and also as natural food preservatives, which, in turn, may be useful in the food industry. © INRA, DIB-AGIB and Springer Science+Business Media B.V., 2011.

In this study twenty-four male and female one-humped (6 males and 6 females) and crossbred (C. dromedarius × C. bactrianus) (6 males and 6 females) camels were grown for six and nine months by completely randomized design. Camels were slaughtered and percentages of meat, total fat and bone of six cuts of carcasses (leg, shoulder, breast, loin, flank and neck) were determined. The dry matter, protein, fat, mineral content (Ca, K, Mg, P, Na, Zn and Fe), ash, non-protein nitrogenous (NPN), and gross energy from six cuts were measured. Results indicated that carcasses from the crossbred group had significantly (P <. 0.05) higher muscle content (57.6. ±. 1.53) than Dromedary camels (56.7. ±. 1.52). The ratio of meat to bone (M. /B) in leg cut of crossbred and one-humped camel meats was 3.1 and 3.0 respectively. The carcass fat content of the crossbred group was significantly (P ≤. 0.05) lower (13.2% DM) than for Dromedary camel group (14.2% DM). The proximate composition of muscle samples from six regions revealed that the moisture percentage of dromedary camels was lower than crossbred camels. The protein percentage in various cuts from crossbred group carcasses was significantly (P ≤. 0.05) higher than those from Dromedary camels. The NPN percentage of female camel meat was higher than male camel samples and was significantly different (P ≤. 0.05) in leg and neck cuts. Although, there was no difference in meat energy content between the two breed groups, meat samples from camels grew for 9 months had significantly (P <. 0.001) higher energy content than those fattened for 6 months. Mineral contents of meat were significantly (P <. 0.05) affected by growth periods. Results of this study indicated that carcass characteristics improved and nutritional value increased during growth periods of crossbreed camels. © 2015.

Mehmannavaz Y.,Islamic Azad University at Tehran | Amirinia C.,Animal Science Research Institute of Iran | Bonyadi M.,University of Tabriz | Torshizi R.V.,Tarbiat Modares University
African Journal of Microbiology Research | Year: 2010

The effects of Insulin-Like Growth Factor-1 polymorphism were examined on milk production traits and genetic trends in the Iranian Holstein bulls. A total of 282 bulls were genotyped for SnaBI restriction site in the 5' flanking region of IGF-1 by applying PCR-RFLP method. The allele frequencies for C and T alleles were 0.562 and 0.438, respectively. The results indicated that genetic variants at the 5'-noncoding region of the bovine IGF-1 gene had a marked effect on estimated breeding values of milk (EBVM) and fat yields (EBVF). The heterozygous bulls (CT genotype) had higher EBVM and EBVF than homozygous bulls (P < 0.1). The average substitution effects of alleles were not significant for none of studied traits (P > 0.1). The studied polymorphism of IGF-1 showed no significant association with genetic trends of milk related traits (P > 0.1). These results suggest that allelic interaction in IGF-1 polymorphism as over dominance and might be effectiveness in animal improving by crossbreeding. © 2010 Academic Journals.

Movahedin M.R.,Islamic Azad University at Karaj | Amirinia C.,Animal Science Research Institute of Iran
African Journal of Biotechnology | Year: 2010

This study describes genetic variation among samples of Iranian Holstein cattle (Bos taurus) by using microsatellite markers. Semen samples of individuals were taken followed by DNA extraction. A panel of 13 microsatellites was used for evaluation of 13 loci in 68 Holstein proofed bulls. Mean value for allele per locus detected is 6.615, ranging from 10 (SPS115) to 4 (ETH3). All the microsatellite DNA markers showed high polymorphism and displayed a relatively high level of genetic variation as estimated by allelic diversity and heterozygosity. Estimated heterozygosities ranged from 1.000 (BM2113, TGLA122, TGLA126, ETH3, MGTG4B, SPS115, TGLA227 and INRAO23) to 0.633 (SPS113) with mean value of 0.946. All the loci showed deviation from Hardy- Weinberg equilibrium (p < 0.001), polymorphism information content (PIC) calculated for each marker exceeded 0.6 and the mean value of Shannon information index was estimated to be 1.606. Obtained results showing heterozygousity can be useful for the development of breeding strategies for genetic improvement in Iranian Holstein cattle. © 2010 Academic Journals.

Ghafouri-Kesbi F.,Animal Science Research Institute of Iran
Genetics and Molecular Biology | Year: 2010

The aim of this study was to monitor changes in genetic size of a small-closed population of Iranian Zandi sheep, by using pedigree information from animals born between 1991 and 2005. The genetic size was assessed by using measures based on the probability of identity-by-descend of genes (coancestry, f, and effective population size, Ne), as well as measures based on probability of gene origin (effective number of founders, fe, effective number of founder genomes, fg, and effective number of non-founder genomes, fne). Average coancestry, or the degree of genetic similarity of individuals, increased from 0.81% to 1.44% during the period 1993 to 2005, at the same time that Ne decreased from 263 to 93. The observed trend for fe was irregular throughout the experiment in a way that fe was 68, 87, 77, 92, and 80 in 1993, 1996, 1999, 2002, and 2005, respectively. Simultaneously, fg, the most informative effective number, decreased from 61 to 35. The index of genetic diversity (GD) which was obtained from estimates of fg, decreased about 2% throughout the period studied. In addition, a noticeable reduction was observed in the estimates of fne from 595 in 1993 to 61 in 2005. The higher than 1 ratio of fe to fg indicated the presence of bottlenecks and genetic drift in the development of this population of Zandi sheep. From 1993 to 1999, fne was much higher than fe, thereby indicating that with respect to loss of genetic diversity, the unequal contribution of founders was more important than the random genetic drift in non-founder generations. Subsequently, random genetic drift in non-founder generations was the major reason for fe > fne. The minimization of average coancestry in new reproductive individuals was recommended as a means of preserving the population against a further loss in genetic diversity. © 2010, Sociedade Brasileira de Genética.

Eskandarinasab M.,University of Zanjan | Ghafouri-Kesbi F.,Animal Science Research Institute of Iran | Abbasi M.A.,University of Zanjan
Journal of Animal Breeding and Genetics | Year: 2010

Records for Afshari sheep were retrieved from data collected between 2000 and 2005 at the Zanjan University experimental flock, at Zanjan, Iran. (Co)variance components and corresponding genetic parameters for birth weight (BW), weaning weight (WW), 6-month weight (W6), average daily gain from birth to weaning (ADGa), from birth to 6 months (ADGb), from weaning to 6 months (ADGc), Kleiber ratio at weaning (WWKR) and Kleiber ratio at 6 months of age (W6KR) were estimated using univariate and bivariate analyses by the DFREML procedure. The Kleiber ratio, defined as growth rate/metabolic weight, has been suggested to be a useful indicator of growth efficiency and an indirect selection criterion for feed conversion. Estimates of direct heritability (h2) were 0.23, 0.27, 0.11, 0.22, 0.07, 0.01, 0.13 and 0.06 for BW, WW, W6, ADGa, ADGb, ADGc, WWKR and W6KR, respectively. Maternal genetic effects represented a relatively large proportion of the total phenotypic variance for BW (m 2 = 0.22), whereas maternal permanent environmental effects were significant for W6 (c2 = 0.15), ADGb (c2 = 0.16), ADGc (c2 = 0.14) and W6KR (c2 = 0.16). Results of bivariate analyses indicated the variable genetic correlations between traits. The largest positive genetic relationships were between adjacent measurements. The moderate estimates of h2 for early growth traits indicate that in Afshari sheep faster genetic improvement through selection is possible for these traits. In order to increase the efficiency of feed conversion, use of Kleiber ratio in selection programmes was recommended. © 2009 Blackwell Verlag GmbH.

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