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Search Results: 1 - 10 of 485729 matches for " R.S. Aljumaah "
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Toxoplasmosis in Goats in Riyadh, Saudi Arabia
S.I. Al-Mufarrej,M.F. Hussein,R.S. Aljumaah,A.R. Gar ElNabi
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.2779.2782
Abstract: During an outbreak of caprine abortion in a farm in Riyadh, Saudi Arabia, serum samples from 57 Aardi goats with recent history of abortion and stillbirths (herd 1) along with samples from 30 control goats without abortion history (herd 2) were analyzed for anti-Toxoplasma gondii antibodies using indirect Enzyme-Linked Immunosorbent Assay (ELISA) and Indirect Haemagglutination (IHA) tests. Antibodies against T. gondii were detected by ELISA in 63.2% of the goats in herd 1 and 50% of the control goats (herd 2). About >80% of the former goats had ELISA percent optical densities (O.D.%) ≥100 while >86% of the control goats were weakly positive with ELISA O.D. s (%) <100. IHA tests were positive in 51.7% of herd 1 versus 30% of control goats. About 78% of all IHA positive goats in herd 1 had antibody titers ranging between 1:640-1:2560 including nearly 30% with titers ranging between 1:1280-1:2560. By contrast, all IHA positive goats in herd 2 had titers ranging only between 1:80-1:160, except one goat with a titer of 1:640 and none with higher titers. IHA tests for IgM antibodies using 2-mercaptoethanol treated sera revealed IgM antibodies in 16 (28%) goats with abortion history (herd 1) and none in control goats (herd 2). Focal pathological changes were observed in the fetal brain and the placenta of some of the aborted goats. These findings strongly suggest T. gondii as the cause of abortion in herd 1.
Serological prevalence of Toxoplasma gondii and its association with abortion in sheep in Saudi Arabia
Hussein M.F.,Almufarrej S.I.,Aljumaah R.S.,Al-Saiady M.Y.
Acta Veterinaria , 2011, DOI: 10.2298/avb1104405h
Abstract: The purpose of this study was to investigate serological prevalence and titers of anti-Toxoplasma gondii antibodies in ewes following waves of abortion and stillbirths in a commercial flock in Riyadh, Saudi Arabia. Serum samples from 168 aborted ewes and 52 breeding rams, were tested for toxoplasmosis using an indirect enzyme-linked-immunosorbent assay (ELISA) and indirect haemagglutination test (IHA). 71 randomly sampled sheep from an abortion-free flock (60 ewes and 11 rams) were also tested, which served as controls. 149 (88.7%) ewes and 42 (80.8%) breeding rams from the flock where abortions and stillbirths occurred were positive for anti-T. gondii antibodies by ELISA. 155 ewes (92.3%) and 44 rams (84.6%), including all of the ELISA positive cases, were also positive by indirect haemagglutination test (IHA). More than 80% of the ELISA positive ewes had O.D. exceeding 100% and nearly 25% of them had O.D. of ≥150%. The IHA results, on the other hand, indicated that more than 75% of the seropositive ewes had antibody titers ≥1:1024, including 58 (37.4%) ewes with IHA titer ranging between 1:4096-1:8192 Pyrexia, depression and vaginal discharge were recorded in some ewes shortly prior to abortion. Post-mortem examination of 5 aborted fetuses revealed blood-stained fluid in the abdominal and thoracic cavities and small inflammatory and necrotic foci in the brain, liver and lungs while the placenta was reddish and friable, and its cotyledons were speckled with small whitish foci of necrosis and mineralization. T. gondii tachyzoites were demonstrated in placental sections of two ewes. By contrast, only 7 (9.9%) out of 71 randomly sampled sheep from an abortion-free flock (60 ewes and 11 rams), were positive for anti-T. gondii antibodies by ELISA and 6 (8.5%) by indirect haemagglutination (IHA) test and most of these had significantly lower titers compared to the flock where abortions and stillbirths were recorded. These results constitute the first detailed serological study of ovine toxoplasmosis in Saudi Arabia and strongly implicate toxoplasmosis as the cause of the abortions and stillbirths in these sheep.
Serological Prevalence of Q Fever and Chlamydiosis in Camels in Saudi Arabia
Mansour F. Hussein,M. AlShaikh,M.O. Gad El-Rab,R.S. Aljumaah,A.R. Gar El Nabi,A.M. Abdel Bagi
Journal of Animal and Veterinary Advances , 2012,
Abstract: Tests for antibodies against Coxiella burnetii and Chlamdophila abortus were conducted in 460 and 186 Saudi camels, respectively, using an enzyme immunoassay technique. The serological prevalence of coxiellosis was 62% while that of chlamydiosis was 19.4%. Neither of these infections was associated with overt clinical disease in the camels and in both cases seropositivity was higher in adult than young camels. The prevalence of antibodies against C. burnetii was closely similar in male and female camels, while a much higher prevalence of anti-chlamydial antibodies was observed in female as compared to male camels. This is the first record of both infections among indigenous camels in Saudi Arabia.
Effects of Glucose Supplementation of Drinking Water on the Performance of Fasting Newly Hatched Chicks
T.M. Shafey,R.S. Aljumaah,S.I. Almufarrej,A.A. Al-Abdullatif,M.A. Abouheif
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.2202.2207
Abstract: The effects of Delaying access to Feed and water (DF) after hatch and glucose supplementation of drinking water on the performance of broiler chickens were investigated in 2 trials. DF for up to 48 h immediately after hatch depressed performance, weight of bursa of fabricius and heart and small intestine length and thickness. However, the DF period did not influence mortality percentage, feed efficiency, composition of eviscerated carcass and body weight percentage of small intestine, heart and lymphoid organs of chickens at 33 days of age when compared with birds fed immediately after hatch. Access to feed and water after hatch increased body weight gain, feed intake and eviscerated carcass weight over the 33 days experimental period. The addition of glucose for up to 10% to drinking water of DF birds in the 1st 72 h did not influence the performance and eviscerated carcass of DF birds.
Polymorphism of Booroola FecB Gene in Prolific Individuals from Najdi and Naeimi Sheep Breeds of Saudi Arabia
M.A. Abouheif,A.N. Al-Owaimer,T.M. Shafey,M.A. AlShaikh,R.S. Aljumaah
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.1262.1264
Abstract: The present investigation was carried out to examine the presence of Booroola FecB mutation gene in 124 selected prolific ewes from 6 flocks representing two Saudi Arabian local sheep breeds by forced PCR-RFLP method. Genomic DNA was extracted from the blood of 69 Najdi and 55 Naeimi matured ewes with litter size varied from 2.01-2.16 lambs per ewe lambing. Digestion of FecB gene 190 base pair with AvaII restriction enzyme resulted in non carrier 190 bp band wild type in all samples which revealed the absence of this mutation in the tested Najdi and Naeimi sheep breeds.
Effects of Dietary Electrolyte Balance on the Performance of Broiler Chickens Fed High Calcium Diets
T.M. Shafey,R.S. Aljumaah,M.A.K. Abdelhalim,M.M. Mady,M.M. Ghannam
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.2902.2908
Abstract: The effects of high Calcium (Ca, 10 and 25 g kg-1) and Dietary Electrolyte Balance (DEB, 250 (basal diet), 200 and 300 mEq kg-1 (3 diets with high Na, K, Na plus K, respectively) on the performance (Weight Gain (WG), Feed Intake (FI) and Feed Conversion Ratio (FCR)) during the starter and finisher periods (1-20 and 21-33 days of age, respectively) and plasma total Ca and electrolytes and carcass characteristics at 33 days of age of broiler chickens were investigated. DEB treatments were prepared by the addition of NH4Cl, NaHCO3, KHCO3 and NaHCO3 plus KHCO3 to the basal diet, respectively. High Ca diet reduced WG, FI, plasma potassium, eviscerated carcass weight and increased FCR and plasma Ca. Altering DEB of 250 by ±50 mEq kg-1 influenced WG and FI of chickens without altering FCR, plasma total Ca and electrolytes and carcass composition. DEB 200 mEq kg-1 did not influence the performance of chickens. DEB 300 mEq kg-1 had a lower WG than DEB 200 or 250 mEq kg-1 during the starter period. DEB 300 mEq kg-1 with high Na had a higher WG than DEB 200 mEq kg-1 at the finisher period. DEB 300 mEq kg-1 with high K had lower WG and FI of chickens than other DEB treatments and eviscerated carcass weight than DEB 250 mEq kg-1 at 33 days of age. It was concluded that altering DEB within the range of 200-300 did not overcome the growth depression effect of high Ca. DEB manipulation influenced the performance of chickens.
On sectional curvatures of quasi-Einstein manifolds
R.S. Lemence
International Journal of Mathematical Analysis , 2012,
Abstract:
Poliartritis y fiebre
R.S. Pinals
Revista Cubana de Medicina , 1995,
Abstract:
HONORARY FELLOW - R.S. SINGH
R.S. SINGH
Indian Phytopathology , 2012,
Abstract: Prof. R.S. Singh was born at village Gagaha in Gorakhpur district on 1st March, 1927. He did his matriculation in 1942 and was enrolled at the Government Agricultural College, Kanpur for his Post Graduation. In 1948 he obtained Masters Degree in plant pathology with distinction. He continued as a Research Assistant and became lecturer in plant pathology in 1951. He was awarded degree of Doctor of Philosophy by Agra University in 1956.
Dastur Memorial Lecture Award* : Bio-diversity of Phytophthora species in India - R.S. MEHROTRA
R.S. MEHROTRA
Indian Phytopathology , 2011,
Abstract: Well, I have been asked to deliver the Dastur Memorial Lecture by Indian Phytopathological Society, New Delhi for which I express my gratefulness to the society. Before I actually talk with regard to biodiversity of Phytophthora species in India, I would like to pay my tribute to Late Professor Jahangir Fardunji Dastur (1886-1971). Dastur received world wide recognition on his monumental work in the discovery of a new species of Phytophthora and named by him as Phytophthora parasitica. Professor Dastur was an outstanding plant pathologist and was the first elected President of the Indian Phytopathological Society. In consonance of Professor Dastur’s immense contribution on Phytophthora parasitica responsible for blight of castor oil plants and foot rot and leaf rot of Piper betle L. caused by Phytophthora parasitica var. piperina, I have decided to talk about the bio-diversity of Phytophthora species in India. In all, around 34 species and varieties of Phytophthora have been reported from India so far (Table 1). The genus Phytophthora (Gr. Phyton, a plant, phthora, destroyer) was established by deBary (1876) with P. infestans de Bary as the type species. He recognized that the fungus causing late blight of potato in Europe in 1840’s previously identified as Botrytis infestans Montagne, later Peronospora infestans (Mont.) Caspary, had unique characteristics like branching of the sporangiophore (at first monopodial, secondary branches sympodial), the shedding of the sporangia, the formation of zoospores in the sporangium and the germination of the sporangium by zoospores or by tube, which he considered distinct enough to be assigned a new genus name. The genus Phytophthora contains a wide range of species, from primitive to advanced, from soil to soil-aerial habitats. Because of its economic importance, the taxonomy, biology and pathology of Phytophthora species has been extensively studied and reviewed by several workers.
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