Risk factors for Cryptosporidial diarrhea in calves
Shahrokh
Ranjbar Bahadori
گروه انگل شناسی، دانشکده دامپزشکی دانشگاه آزاد اسلامی، واحد گرمسار
author
Mohammad
Aliari
گروه علوم درمانگاهی، دانشکده دامپزشکی دانشگاه آزاد اسلامی، واحد گرمسار
author
text
article
2012
per
BACKGROUND: Cryptosporidium is an intracellular protozoan parasite that known as the major cause of diarrhea in human and animals. OBJECTIVES: The level of infection to Cryptosporidium in diarrheic calves of livestock around Tehran and the role of risk factors on its emergence were studied. METHODS: 200 fecal samples from diarrheic calves of livestock's around Tehran city were collected by cluster sampling method and were studied by modified Ziehl-Neelsen staining method. RESULTS: Existence of Cryptosporidium infection was confirmed in 18 calves (9%). Incidence rate of the infection did not have any significant relationship with sex of animals (p=0.928) and diarrhea history (p=0.640), but the incidence rate of the infection was more in suckling calves with age of less than 2 months with dry fertilizer bedding. CONCLUSIONS: According to the reports of Cryptosporidium infection in multiple studies from different regions of Iran, recognizing the risk factors on the infection incidence can have an important role in controlling the protozoan.
Journal of Veterinary Research
The University of Tehran Press
2008-2525
67
v.
3
no.
2012
205
209
https://jvr.ut.ac.ir/article_28497_3df19462012177892e7bb91384011d56.pdf
dx.doi.org/10.22059/jvr.2012.28497
Control and eradication program for bovine brucellosis in Iran: An epidemiological survey
hossein
esmaeili
گروه میکروب شناسی، دانشکده دامپزشکی دانشگاه تهران
author
Parviz
Tajik
گروه علوم درمانگاهی، دانشکده دامپزشکی دانشگاه تهران
author
Hasan
Ekhtiyarzadeh
سازمان دامپزشکی کشور، تهران
author
Mahmood
Bolourchi
گروه علوم درمانگاهی، دانشکده دامپزشکی دانشگاه تهران
author
Mona
Hamedi
گروه میکروب شناسی، دانشکده دامپزشکی دانشگاه تهران
author
Mahdi
Khalaj
سازمان دامپزشکی کشور، تهران
author
Karim
Amiri
سازمان دامپزشکی کشور، تهران
author
text
article
2012
per
BACKGROUND: Brucellosis is a zoonotic disease that is widely distributed throughout the developing countries. OBJECTIVES: The status of bovine brucellosis combating program in Iran from beginning to now was reviewed. METHODS: The information of 59 year combating against bovine brucellosis were obtained from Iran Veterinary Organization. RESULTS: Bovine brucellosis was first recognized in 1944 in Iran and is now endemic. In 1949, a bovine brucellosis combating program was setup which included vaccination of female calves with strain S19/RB51, infection diagnostic testing and slaughtering the infected cattle. Prevalence of brucellosis among industrial and semi-industrial dairy cattle calculated as 0.3%. CONCLUSIONS: Controlling and prevention of bovine brucellosis is far more complex than vaccination, testing and slaughtering the infected livestock. A financially well- supported control and eradication program and joint efforts between the farmers and governmental authorities are needed as a mean to prevent the spreading of disease. Without these, even a very good strategy will fail.
Journal of Veterinary Research
The University of Tehran Press
2008-2525
67
v.
3
no.
2012
211
221
https://jvr.ut.ac.ir/article_28498_79bd082dd29638fc110548b4d657a9ba.pdf
dx.doi.org/10.22059/jvr.2012.28498
Effects of electron beam irradiation and organic acid on production performance and immune responses in broiler chickens
shaban
rahimi
گروه پرورش و تولید طیور دانشکده کشاورزی دانشگاه تربیت مدرس
author
Saeed
Yakhkeshi
گروه پرورش و تولید طیور دانشکده کشاورزی دانشگاه تربیت مدرس
author
Parvin
Shawrang
پژوهشکده تحقیقات کشاورزی، پزشکی و صنعتی پژوهشگاه علوم و فنون هستهای کرج
author
text
article
2012
per
BACKGROUND: Electron beam irradiation and using of organic acids cause reducing or eliminating the microbial load of poultry diets. OBJECTIVES: This study was conducted to compare the effect of electron beam irradiation and organic acids on diet microbial load, immune system, serum lipids, intestinal morphology, organs relative weight and growth characters of broilers. METHODS: 300 day-old male broilers (Cobb 500) were randomly divided into 5 experimental groups, so that each group included 4 replicates with 15 birds per pen. Treatments were basal diet as control, irradiate diet by 3, 5 and 7 kGy doses and diet containing Formycin 0.2%. RESULTS: The highest and lowest of daily weight gain average were observed in finisher and total period by 7 kGy and control groups, respectively (p
Journal of Veterinary Research
The University of Tehran Press
2008-2525
67
v.
3
no.
2012
223
233
https://jvr.ut.ac.ir/article_28499_dad4df4fa7e9e9ec7bdf92b96efe2662.pdf
dx.doi.org/10.22059/jvr.2012.28499
Effects of oral levamisole hydrochloride on cellular and humoral immune responses in broiler chickens
Mohammad
Roostaei Ali Mehr
گروه علوم دامی، دانشکده علوم کشاورزی دانشگاه گیلان
author
Mahmood
Haghighian Roudsari
گروه علوم دامی، دانشکده علوم کشاورزی دانشگاه گیلان
author
Bahareh
Mansori
گروه علوم دامی، دانشکده علوم کشاورزی دانشگاه گیلان
author
Gholam Reza
Nikbakht Broujeni
گروه میکروبیولوژی، دانشکده دامپزشکی دانشگاه تهران
author
text
article
2012
per
BACKGROUND: in this experiment, the effect of consecutive oral levamisole usage on cellular and humoral responses of broilers immune system was evaluated. OBJECTIVES: The aim of this experiment was to determine the best level of levamisole for stimulating immune system of broilers. METHODS: The experiment was conducted by 250 day old (male and female) broiler (Ross) chicks with an average live weight of 40.2g. Effect of zero (control L0), 3.5 (L3.5), 7 (L7), 14 (L14) and 28 (L28) mg/l of levamisole in drinking water from 5 to 25 days under randomized design using a factorial experiment with 5 replication were studied. Cellular immune responses were assayed by PHA-P injection in the skin fold of wings (day 15) and thickness of skin were measured after 24 and 48 hours. Sheep Red Blood Cell (SRBC) 25% were injected in the breast muscle in days 7 and 21 to investigate humoral immune responses, and IgG titer against SRBC was determined in days 7, 14, 28, 35, and 42 by agglutination test. RESULTS: Cellular immune responses to PHA-P in treatments containing 7 and 14 mg/l of levamisole (0.272 and 0.205, respectively) were significantly affected (p
Journal of Veterinary Research
The University of Tehran Press
2008-2525
67
v.
3
no.
2012
235
241
https://jvr.ut.ac.ir/article_28500_b4081fa2690cb493171d68b490b011e1.pdf
dx.doi.org/10.22059/jvr.2012.28500
Effects of post-milking teat dipping changing on bulk tank milk bacterial status
golshid
javdani shahedin
گروه علوم درمانگاهی، دانشکده دامپزشکی دانشگاه تهران
author
Mahdi
Vojgani
گروه علوم درمانگاهی، دانشکده دامپزشکی دانشگاه تهران
author
text
article
2012
per
BACKGROUND: Contagious and environmental bacteria are current causes of mastitis and Bulk Tank Bacteria Count (BTBC). Beside other hygienic procedures related to controlling mastitis, Post-Milking Teat Dipping (PMTD) with a suitable teat antisepsis has a special place and can play an important role in the kind of herd mastitis and decreasing the Total Bacteria Count (TBC). OBJECTIVES: This study was performed to evaluate the efficiency of short-time changing of PMTD solution on count and kind of milk tank bacteria. METHODS: This study was conducted in 2 large dairy farms that their current antisepsis was iodophor components in 4 periods around Tehran during March to August 2010. In each 4 periods after the last time that iodophor was used, milk transfer tank sample was collected and 3 tests include Bulk Tank Somatic Cell Count (BTSCC), milk quality tests and bacterial isolation were performed. Then, antisepsis was replaced with chlore components for at least 2 weeks. At the end, another milk tank sample was obtained and tests were done again. RESULTS: Sectional changing of iodophor with chlore components in all 4 periods, according to decreasing in TBC, Coliform count, preliminary incubation count, laboratory pasteurized count, Staphylococcus count and Streptococcus count caused increasing the quality of milk and decreasing the mastitis. CONCLUSIONS: Changing in post-milking teat dipping has positive effect on quality of raw milk.
Journal of Veterinary Research
The University of Tehran Press
2008-2525
67
v.
3
no.
2012
243
249
https://jvr.ut.ac.ir/article_28501_31521af97a2626277a43071aec7cef52.pdf
dx.doi.org/10.22059/jvr.2012.28501
Comparision of auricle and external ear canal fungal flora between healthy domestic short-hair and Persian cats
Shahram
Jamshidi
گروه علوم درمانگاهی، دانشکده دامپزشکی دانشگاه تهران
author
Shahram
Jamshidi
گروه علوم درمانگاهی، دانشکده دامپزشکی دانشگاه تهران
author
Ali Reza
Khosravi
مرکز تحقیقات قارچ شناسی، دانشکده دامپزشکی دانشگاه تهران
author
Hesamodin
Akbarain
گروه اپیدمیولوژی و بهداشت مواد غذایی، دانشکده دامپزشکی دانشگاه تهران
author
text
article
2012
per
BACKGROUND: Fungal agents are considered as one of the most prevalent organisms in external otitis. OBJECTIVES: The aim of this study was to compare the fungal flora of external ear canal and concave surface of auricle in healthy Persian and Domestic Short Hair (DSH) cats. METHODS: Samples were collected from 120 healthy cats (60 Persians and 60 DSH) with swab and cellophane tape. RESULTS: Out of 103 (85.8%) organisms isolated from cats, 83 (80.6%) were identified as molds. infection with Dermatophytes were detected in 3 (5%) samples. Yeasts were also present in 20 (19.4%) cats. Based on the results of this study there wasn't any significant difference in fungal flora of the ear canal between Persian and DSH cats. CONCLUSIONS: Ear canal and pinna in most of healthy cats harbor fungal filamentous and yeast organisms that maybe pathogenic in suitable conditions. Furthermore dermatophyte organisms in apparently healthy cats can be transmitted to their owners.
Journal of Veterinary Research
The University of Tehran Press
2008-2525
67
v.
3
no.
2012
251
256
https://jvr.ut.ac.ir/article_28502_753f02cfa981c58f5788230fcf621ca0.pdf
dx.doi.org/10.22059/jvr.2012.28502
Ruminal ciliated protozoa in Baloochi and Sindhi Camel breeds
Daryoush
Alipour
گروه علوم دامی، دانشکده کشاورزی دانشگاه بوعلی سینا
author
text
article
2012
per
BACKGROUND: The study of rumen protozoan frequency and population diversity in different regions' ruminants, moreover than increasing the information about diversity of protozoa, shows the relationship within the species of ruminants, partially. OBJECTIVES: The aim of this research was to study of ruminal ciliate population in one-humped camels of Baloochi (n=14) and Sindhi (n=6) strains. METHODS: The samples were collected from rumen after slaughter. Samples then were transferred into formalin bottles. At first, all the ciliates were counted and their genus and species were determined. RESULTS: The mean of ciliates were 29.4×104 in Baloochi and 35.6×104 in Sindhi camels per each milliliter of ruminal content. Entodinium dubardi, Diplodinium cameli, Epidinium ecaudatum, Epidinium caudatum and Caloscolex camelinus were observed in both breeds. Frequency of Epidinium caudatum in Sindhi camels (15×104 per ml) was significantly higher than Baloochi camels (12×104 per ml; p
Journal of Veterinary Research
The University of Tehran Press
2008-2525
67
v.
3
no.
2012
257
263
https://jvr.ut.ac.ir/article_28503_dd0f3777be083b20a2c5c9614e6bbff2.pdf
dx.doi.org/10.22059/jvr.2012.28503
Clinical and histopathological evaluations of local honey application in the healing of experimental wounds in dog
seidjavid
aledavood
گروه جراحی، دانشکده دامپزشکی دانشگاه ارومیه
author
Omid
Najafi
گروه جراحی، دانشکده دامپزشکی دانشگاه ارومیه
author
Seyed Javid
Aldavood
گروه علوم درمانگاهی، دانشکده دامپزشکی دانشگاه تهران
author
Farnood
Shokouhi Sabet Jalali
گروه جراحی، دانشکده دامپزشکی دانشگاه ارومیه
author
Amir Abbas
Farshid
گروه پاتولوژی، دانشکده دامپزشکی دانشگاه ارومیه، ارومیه
author
Sanaz
Rahmani
گروه جراحی، دانشکده دامپزشکی دانشگاه ارومیه
author
text
article
2012
per
BACKGROUND: Honey has been generally used in traditional medicine for healing different kind of wounds. In this research complex, the clinical and histopathological effects of West Azarbayjan non-boiled honey in healing process of surgical wounds (cuts) were evaluated. OBJECTIVES: This study was performed to evaluate the effect of honey on healing time and duration of wound closing in dog. METHODS: 30 dogs, each weight was almost 25kg, were divided into 2 clinical (n=10) and histopathological (n=20) groups. In each group, after surgical preparation and anesthesia surgical wounds were produced by a similar pattern and size (rectangle; 25×50 mm2) in the thoracolumbar region. Wounds on the left side arbitrary taken as treatment group and on the right side as control group. Postoperative treatment in the honey group was included daily wound irrigation with normal saline and then topical application of 20g honey. In the control group only irrigation with normal saline was performed. Clinical and histopathological parameters were evaluated in each group 7, 14, 21 and 28 days after operation. RESULTS: Honey caused in acceleration an healing and surgical wound closure and in decreasing the level of infection and secretion in the experiment group in compare to control group which was more significant at days 14 and 28 (p
Journal of Veterinary Research
The University of Tehran Press
2008-2525
67
v.
3
no.
2012
265
271
https://jvr.ut.ac.ir/article_28504_0d68700f023cd56c10e9a80f4169ae69.pdf
dx.doi.org/10.22059/jvr.2012.28504
Anatomical and histological study on thyroid gland in one humped camel (Camelus dromedarious)
Seyed Javad
Ahmadpanahi
گروه علوم پایه، دانشکده دامپزشکی دانشگاه سمنان
author
Mohammad Hasan
Yousefi
گروه علوم پایه، دانشکده دامپزشکی دانشگاه سمنان
author
text
article
2012
per
BACKGROUND: Thyroid is an endocrine gland that influences many organs of the body and plays an important role in the metabolism of animals. However, little researches have been done about anatomical and histological characteristics of camel thyroid glands in Iran. OBJECTIVES: The aim of this study was to determine the anatomical and histological structure of thyroid gland in one-humped camel. METHODS: In this research, the anatomical characteristics and histological structure of the thyroid glands of 40, 6-10 year old one-humped, camels (20 males and 20 females) were studied by sectioning and staining with Haematoxylin & Eosin, Verhoeff and Toluidine blue by light microscope. RESULTS: The thyroid gland of one-humped camel was situated in lateral surface of the trachea. The right lobe was located slightly cranial to the left one lying on the caudal aspect of the larynx while both lobes were connected together by isthmus on the ventral surface of trachea. Maximum length, width and thickness of thyroid gland were 5.15±0.65, 2.25±0.75 and 0.9±0.5 cm, respectively in male camels and 5.55±0.5, 2.65±0.3 and 0.9±0.52 cm, respectively in female camels. Weights of the thyroid gland in male and female camels were 51.69±0.52 and 53.07±0.25 g, respectively. Histologically, the thyroid gland contained follicles, follicular epithelium and parafollicular cells in microscopic examination. The parafollicular cells were about 5% of the cell population. Large follicles were located in peripheral margin whereas small ones in central part of the gland. Central parts of the gland had richer vascular base in comparison with the peripheral parts. CONCLUSIONS: Anatomically and histologically, the thyroid gland of one-humped camel has no remarkable difference with other domestic mammals.
Journal of Veterinary Research
The University of Tehran Press
2008-2525
67
v.
3
no.
2012
273
278
https://jvr.ut.ac.ir/article_28505_3879a0e5b92ace96c5d3fa388ee7205e.pdf
dx.doi.org/10.22059/jvr.2012.28505
Morphometrical and histometrical study on Syrian mice testis treated with pure phenol
Zahra
Tootian
گروه علوم پایه، دانشکده دامپزشکی دانشگاه تهران
author
Nader
Goodarzi
گروه علوم پایه، دانشکده دامپزشکی دانشگاه تهران
author
Simin
Fazelipour
گروه آناتومی، واحد پزشکی تهران، دانشگاه آزاد اسلامی
author
Jamileh
Salar Amoli
گروه علوم پایه، دانشکده دامپزشکی دانشگاه تهران
author
Ali Reza
Bahonar
گروه بهداشت مواد غذایی، دانشکده دامپزشکی دانشگاه تهران
author
text
article
2012
per
BACKGROUND: Phenol is a toxic organic chemical found in many foods and chemicals in our environment. OBJECTIVES: Regarding to the wide use of phenol and its harmful effects, this study was done to determine the effect of pure phenol on morphometrical and histometrical structure of testis. METHODS: 24 mature male Syrian mice divided to one control and 3 treatment groups that received pure phenol at 30, 75 and 100 mg/kg doses through gavage during 35 days. Finally, body, testis and tunica albuginea layer weight, gonadosomatic index (GSI) and length, width and thickness of the testis were measured. For histometrical assessment, the diameter of seminiferous tubules and the thickness of germinal layer were measured. RESULTS: Body weight in 75 and 100 mg/kg doses (2.02±4.09 and 2.33±3.35g, respectively) had significant decrease (p
Journal of Veterinary Research
The University of Tehran Press
2008-2525
67
v.
3
no.
2012
279
284
https://jvr.ut.ac.ir/article_28506_4c0218f59aca6c9e6a2bfa9766a416eb.pdf
dx.doi.org/10.22059/jvr.2012.28506
Effects of Viscum album and Nigella sativa extracts on survival rate, growth factors and resistance to Aeromonas hydrophila infection in gold fish (Carassius auratus)
Mojtaba
Alishahi
گروه علوم درمانگاهی، دانشکده دامپزشکی دانشگاه شهید چمران اهواز
author
Mehrzad
Mesbah
گروه علوم درمانگاهی، دانشکده دامپزشکی دانشگاه شهید چمران اهواز
author
text
article
2012
per
BACKGROUND: Recently several types of herbal immune and growth stimulants have been used in aquaculture troughout the world. OBJECTIVES: This study was performed to evaluate the effects of oral administration of Viscum album and Nigella sativa extracts, on survival rate, growth factors and resistance against Aeromonas hydrophila infection in gold fish. METHODS: 270 gold fishes were divided into 2 immune and non-immune groups and each group into 3 treatments; V.album, N.sativa and control (each with 3 repeats). Each treatment groups fed for 7 weeks with food supplemented with 0.5% of V.album, N.sativa or water. At the end of treatment, survival rate, growth factors and resistance to A.hydrophila infection were compared among the groups. RESULTS: Percentage of mortality in different groups were 9.33 to 12% and prescription of either extracts has no significant effect on survival of groups (p>0.05). Food conversion rate and percentage of weight gain were 2.56±0.31 and 131.6±25.05% in V.album treatment and 3.12±0.37 and 73.2±4.53% in control treatment, respectively which showed a significant increase (p
Journal of Veterinary Research
The University of Tehran Press
2008-2525
67
v.
3
no.
2012
285
290
https://jvr.ut.ac.ir/article_28507_47c73c80f012740679686ee0fac9ef28.pdf
dx.doi.org/10.22059/jvr.2012.28507
Chromosomal study on Zagros pupfish (Aphanius vladykovi)
farhad
amini
گروه بهداشت و تغذیه دام و طیور، دانشکده دامپزشکی دانشگاه تهران
author
Azar
Hemmatzadeh
دانش آموخته کارشناسی ارشد شیلات، دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران، آدرس فعلی: گروه شیلات، دانشکده کشاورزی دانشگاه آزاد اسلامی واحد شهر کرد
author
text
article
2012
per
BACKGROUND: Zagros Pupfish (Aphanius vladykovi) is a native fish of Iran which is found in basins of Chahar Mahal & Bakhtiari province. OBJECTIVES: In this study, the chromosome number and karyotype of Zagros Pupfish were investigated. METHODS: To obtain metaphase chromosome spreads in vivo, 1.2-5.4g fish were injected intraperitoneally by 0.1-0.15 mg/g of 1% colchicine and were humanely killed after being incubated in a well-aerated tank for 4-5 hours at 22-23oC. Hematopoietic, testis or ovary, gill, spleen and liver tissues were isolated from the fish and were fixed with cold Carnoy's solution after being hypotonized in 0.075M KCl. Chromosome spreads were prepared by either splashing of cell suspension or stamping of whole tissues onto slides. Slides were then stained by 10% Giemsa followed by microscopic observation. Suitable metaphase plates were digitally microphotographed and chromosomes were counted and karyotyped. RESULTS: Diploid chromosome number ranged from 42 to 49 with the modal number (2n) of 48. Based on the prepared karyotype, chromosome formula for this species was 12st+36a/t and the number of chromosome arms (FN) was calculated 60. No heteromorphic sex chromosomes could be recognized in this species. CONCLUSIONS: The diploid chromosome number of Zagros Pupfish is similar to other species of the same genus so far investigated.
Journal of Veterinary Research
The University of Tehran Press
2008-2525
67
v.
3
no.
2012
291
296
https://jvr.ut.ac.ir/article_28508_7530683cbc6f81586fda37a7d1825f32.pdf
dx.doi.org/10.22059/jvr.2012.28508
Effects of electrolyte balance and dietary protein levels on production performance and carcass parameters in broiler chickens exposed to heat stress
alireza
safamehr
گروه علوم دامی، دانشگاه آزاد اسلامی واحد مراغه
author
Mohammad
Narimani
گروه علوم دامی، دانشگاه آزاد اسلامی واحد مراغه
author
Ali
Nobakhat
گروه علوم دامی، دانشگاه آزاد اسلامی واحد مراغه
author
text
article
2012
per
BACKGROUND: Changing in protein level and electrolyte balance in diets can be useful in improvement of performance in broilers exposed to heat stress. OBJECTIVES: This experiment was carried out to determine the effects of different levels of protein and electrolyte balance (DCAB) on performance and carcass traits in broiler exposed to heat stress. METHODS: 486 Ross, one-day old broilers were used in a completely randomized design with a 3×3 factorial arrangement in triplicate for a treatment. For performing this, 9 diets were formulated according to NRC recommendation with 3 different protein levels (100, 90 and 80% of NRC recommendations) and electrolyte balance (200, 260 and 320meq/kg). The birds were exposed to heat stress (34±3?C) for 8 hours (10:00 to 18:00). RESULTS: Body weight gain in broilers fed containing 260meq/kg DCAB, were significantly (p
Journal of Veterinary Research
The University of Tehran Press
2008-2525
67
v.
3
no.
2012
297
306
https://jvr.ut.ac.ir/article_28509_000b2599bb83b095db0d5e82cc68f69c.pdf
dx.doi.org/10.22059/jvr.2012.28509