جستجوی مقالات مرتبط با کلیدواژه « alborz » در نشریات گروه « دامپزشکی »

Canine Leishmaniosis due to Leishmania infantum is a major global zoonosis, potentially fatal to humans and dogs.Blood samples were taken and collected from cephalic or saphenous vein from 85 stray dogs of different ages, breeds, and both genders that were registered in the Karaj municipality's dog camping and 60 stray dogs that were registered in the Kohsar district. After separation of blood sera, anti-Leishmanial antibodies were detected by direct agglutination test (DAT). Out of 85 stray dogs samples from the Karaj municipality's dog camping, 38(44.7%) were males and 47(55.3%) were females and out of these, 4(4.7%) of them were positive for visceral Leishmaniasis that three of them were male and one was female. All of the seropositive dogs were symptomatic. Out of 60 stray dogs samples from the kohsar district, 14(23.3%) of them were positive for visceral Leishmaniasis that 6(10%) of positine cases were males and 8(13.3%) were females .Among the seropositive dogs in this regions, 4(6.6%) cases were asymptomatic and 10(16.66%) cases were symptomatic. there was not any significant difference between season of sample collection .Visceral Leishmaniasis is a zoonotic disease; therefore, the need for continuous surveillances on the prevalence of it in our communities is an essential work as a control strategy. There is a need for more additionalserological and molecular studies for exact determination of the presence of these parasites.

A seroepidemiological study to detect the presence of the antibodies against West Nile Virus(WNV), Influenza AVirus, Equine Infectious Anemia Virus (EIA) and Equine Arteritis Virus (EAV) was done in Tehran and Alborzprovince, Iran from April 2011 to July 2012. The objective of this study was to determine the serological statusof the most important viruses in horse. Serum samples were collected from stable horses throughout TehranandAlborzprovince. Out Of 126 samples, 3 (2.38%), 1 (0.79%), 37 (29.36%), 85(67.46%) were seropositive for WNV,EIA, EAV and Influenza A Virus, respectively. The results revealed that antibodies against WNV, EIA and EAVwere present in Tehran and Alborz province; meanwhile,previous exposure to WNV, EIA and EAV might nothave occurred in Iran due to low percentages ofWNV and EIA seropositive cases and medium percentage ofEAV seropositive results. Seropositivecases of WNV, EIA and EAV were as same as other reports. Since highpercentages of Influenza A seropositive results, the agent is likely circulating in Iran.

This survey was carried out to determine the seroprevalence of Mycoplasma synoviae (MS) infection throughcommercial layer farms in Alborz and Qazvin provinces. A total of 2050 serum samples from 21 commercial layerflocks (50 samples from each farm), mostly over 40- week- old were collected during winter and spring seasonsrandomly. The sera were experimented for detecting the antibody against Ms by Serum Plate Agglutination (SPA)Test using commercial M. Synoviae antigen (Soleil Co., France). Positive reactions retested by SPA on 1/8 dilutionand the flocks with more than 10% of positive reactions were considered positive serologically.The results showed that in Alborz province: 10 out of 20 (50%) farms were positive and 10 out of 20 (50%) farmswere negative. Also, 170 out of 1000 (17%) serum samples were positive, 6 out of 1000 (0.6%) were suspect and824 out of 1000 (82.4%) were negative. In Qazvin province: 7 out of 21 flocks (33.3%) were positive and 14 out of21 flocks (66.7%) were negative. Also, 201 out of 1050 sera (19.14%) were positive, 6 sera (0.57%) were suspectand 843 sera (80.28%) were negative. Statistical analysis showed signifcant positive correlation between positiveflocks and strain (LSL strain serologically showed higher positive reaction rate compared to Hy-Line strain),capacity of flocks and the number of houses in the farms (P<0.05).It seems that the seroprevalence of Ms in layer flocks is high. However using MS live vaccine as interventionstrategy requires more detailed studies.

Coccidiosis is one of the common intestinal infections in calves worldwide. Different Species of Eimeria protozoanscauses coccidiosis in dairy farms. These protozoa live in intestinal epithelial cells and its life cycle in intestine causessevere diarrhea in young calves. 15 different Eimeria spp. Had been recognized around the world which E.bovis andE.zurnii are the most virulent.In this study, 3 dairy farm at Alborz province in Iran were studied.100 faecal samples were taken and after sporulationof those in 2.5% potassium bichromate presence of Eimerial oocysts were surveyed by using Flotation method suchas Clayton-Layn and Modifed Mc master techniques. The results showed that infection were only in calves, Meaninfection rate was 2%,which this rate is near the results of Razavi and colleagues studies in dairy farms of Shirazregion but is less than Yakhchali study in Sanandaj Province of Iran.All Positive calves in our study were under 3 months of age. The low infection rate in this study is related to animal’sage, individual characteristics and good management of farms, but the latter is probably more important.

Mycoplasma gallisepticum is associated with signifcant economic losses in domestic poultry, caused suboptimalegg production in layers. This survey was carried out to determine the seroprevalence of Mycoplasma gallisepticum infection in commercial layer farms in Alborz and Qazvin provinces for primary evaluation of usage of liveMg vaccine in commercial layer flocks. A total of 2050 serum samples were collected from 41 commercial layerflocks (50 samples from each farm) mostly over 40-week-old. Sera were tested by Serum Plate Agglutination(SPA) method using commercial Mg antigen (Noblis MG®, Intervet Co, Holland). Positive reactions retested bySPA on 1:8 dilution and the farms with more than 10% positive reactions were considered positive serologically.The result showed that in the Alborz province, only one out of 21 (4.8%) farms were positive and the rest (95.2%)were negative; also, 51 out of 1050 (4.86% ) sera were positive, 991 out of 1050 (94.38%) were negative and 8out of 1050 (0.76%) were doubtful. In Qazvin province, 3 out of 20 (15%) farms were positive and 17 out of 20(85%) were negative; also, 74 out of 1000 (7.4%) sera were positive, 46 out of 1000 (4.6%) were doubtful and880 out of 1000 (88%) were negative. As seroprevalence of Mg infection in these two provinces which are veryimportant areas in poultry production in Iran were low,so it seems that using live vaccine against Mg needs morestudies. However, molecular identifcation should be used for completing this fnding and biosecurity notices arevery important for controlling of Mg.