Parasitological and Clinico‐pathological Profiles in Friesian Cattle Naturally Infected with Theileria annulata in Saudi Arabia     

O. H. Omer  E. M. Haroun  O. M. Mahmoud  E. M. Abdel‐Magied  K. H. El‐Malik  M. Magzoub 《Zoonoses and public health》2003,50(4):200-203

Clinico‐pathological profiles were studied in adult and young Friesian cattle naturally infected with Theileria annulata in the Qassim Region, Saudi Arabia. Sixty‐two clinical cases of T. annulata infection in adult and young Friesian cattle were diagnosed during the period from August 1999 to July 2000. Symptoms observed were marked fever, swelling of superficial lymph nodes, inappetance, tachycardia, dyspnoea and weakness. The most prominent gross pathological features were jaundice, petechial and ecchymotic haemorrhages involving mucosal and serosal surfaces of many organs as well as body fat. A number of young and adult Friesian cattle undergoing lethal T. annulata infection developed lymphoma‐like lesions in a manner similar to that of T. parva. The main histological findings were necrosis and severe lymphocytic infiltration. The spleen, lymph nodes and Peyer's patches were devoid of typical lymph nodules.  相似文献   

Haematological profiles in pure bred cattle naturally infected with Theileria annulata in Saudi Arabia     

Omer OH  El-Malik KH  Mahmoud OM  Haroun EM  Hawas A  Sweeney D  Magzoub M 《Veterinary parasitology》2002,107(1-2):161-168

The Abbott Cell Dyn 3500 haematology analyzer was employed to study haematological parameters in 41 adult and young Friesian cattle naturally infected with Theileria annulata in the Qassim region of Saudi Arabia. Comparison was made with clinically healthy adult and young Friesian cattle. Changes in blood parameters in T. annulata-infected cattle indicated severe macrocytic hypochromic anaemia, panleukopenia, lymphocytopenia, eosinopenia, neutropenia and thrombocytopenia but no reticulocytosis.  相似文献   

In vitro evaluation of a custom cutting jig and custom plate for canine tibial plateau leveling     

Marcellin-Little DJ  Harrysson OL  Cansizoglu O 《American journal of veterinary research》2008,69(7):961-966

OBJECTIVE: To design and manufacture custom titanium bone plates and a custom cutting and drill guide by use of free-form fabrication methods and to compare variables and mechanical properties of 2 canine tibial plateau leveling methods with each other and with historical control values. SAMPLE POPULATION: 10 canine tibial replicas created by rapid prototyping methods. PROCEDURES: Application time, accuracy of correction of the tibial plateau slope (TPS), presence and magnitude of rotational and angular deformation, and replica axial stiffness for 2 chevron wedge osteotomy (CWO) methods were assessed. One involved use of freehand CWO (FHCWO) and screw hole drilling, whereas the other used jig-guided CWO (JGCWO) and screw hole drilling. RESULTS: Replicas used for FHCWO and JGCWO methods had similar stiffness. Although JGCWO and FHCWO did not weaken the replicas, mean axial stiffness of replicas after JGCWO was higher than after FHCWO. The JGCWO method was faster than the FHCWO method. Mean +/- SD TPS after osteotomy was lower for FHCWO (4.4 +/- 1.1 degrees ) than for JGCWO (9.5 +/- 0.4 degrees ), and JGCWO was more accurate (target TPS, 8.9 degrees ). Slight varus was evident after FHCWO but not after JGCWO. Mean postoperative rotation after JGCWO and FHCWO did not differ from the target value or between methods. CONCLUSIONS AND CLINICAL RELEVANCE: The JGCWO method was more accurate and more rapid and resulted in more stability than the FHCWO method. Use of custom drill guides could enhance the speed, accuracy, and stability of corrective osteotomies in dogs.  相似文献   

Acute mesenteric ischemia–like syndrome associated with suspected Spirocerca lupi aberrant migration in dogs     

Omer Lerman  Inbar Israeli  Tomer Weingram  Hadas Benzioni‐Bar  Josh Milgram  Anna Shipov 《Journal of Veterinary Emergency and Critical Care》2019,29(6):668-673

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Hyperosmolemic changes following experimental ethylene glycol intoxication in dogs     

Green RA  St Omer VV  Zumwalt RW  Dallman MJ 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》1978,7(3):6-11

Experimental ethylene glycol toxicosis in dogs produced a marked increase in serum osmolality. By comparing measured and calculated serum osmolality and relating this difference to plasma ethylene glycol, it was determined that ethylene glycol was primarily responsible for the hyperosmolemia. Osmometry may provide a useful adjunct to other diagnostic tests in identifying ethylene glycol intoxicated dogs during the early, most treatable, stage of toxicosis.  相似文献   

Response to partial replacement of yellow corn with potato processing waste as non-traditional source of energy on the productive performance of Ossimi lambs     

Hamed A. A. Omer  Soha S. Abdel-Magid  Sawsan M. Ahmed  Mamdouh I. Mohamed  I. M. Awadalla 《Tropical animal health and production》2010,42(6):1195-1202

Twenty-one male growing lambs aged 6 months with an average weight 27.6 ± 0.24 kg were used to determine the effects of partial replacing yellow corn with potato processing waste (PPW) on performance of Ossimi lambs. Animals divided into three equal groups and assigned for control and two experimental diets containing PPW which was replaced from yellow corn at 0% PPW (R₁), 25% PPW (R₂), and 50% PPW (R₃). The results showed that tested rations were almost isocaloric and isonitrogenous. Dietary treatments had no significant effect on feed intake, while water intake insignificantly decreased. Digestibility coefficients of dry matter, organic matter, and crude protein significantly (P < 0.05) improved. However, dietary treatment had no significant effect on crude fiber and nitrogen-free extract digestibilities. Values of total digestible nutrient and digestible crude protein significantly (P < 0.05) increased. Nitrogen retention was positive for all groups. Dietary treatments had no significant effect on ruminal pH but insignificantly decreased ammonia nitrogen (NH₃–N) concentrations. However, total volatile fatty acid concentration was increased. Dietary treatments increased molar proportion of volatile fatty acids. Final weight, body weight gain, and average daily gain were significantly (P < 0.05) decreased, while feed conversion ratio insignificantly decreased. Inclusion of PPW decreased total daily feeding costs of experimental rations. PPW could be used as a source of energy in lamb rations instead of corn grain. Also, PPW can be successfully fed to lamb without any adverse effect on their performance, and it can be an economical substitute for grain.  相似文献   

Insecticide resistance in field populations of Bemisia tabaci (Hemiptera: Aleyrodidae) in West Africa     

Thomas A Houndété  Guillaume K Kétoh  Omer SA Hema  Thierry Brévault  Isabelle A Glitho  Thibaud Martin 《Pest management science》2010,66(11):1181-1185

BACKGROUND: The tobacco whitefly, Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae), has developed a high degree of resistance to several chemical classes of insecticides throughout the world. To evaluate the resistance status in West Africa, eight insecticides from different chemical families were tested using the leaf‐dip method on four field populations collected from cotton in Benin, Togo and Burkina Faso. RESULTS: Some field populations showed a significant loss of susceptibility to pyrethroids such as deltamethrin [resistance ratio (RR) 3–5] and bifenthrin (RR 4–36), to organophosphates (OPs) such as dimethoate (RR 8–15) and chlorpyrifos (RR 5–7) and to neonicotinoids such as acetamiprid (RR 7–8) and thiamethoxam (RR 3–7). Bemisia tabaci was also resistant to pymetrozine (RR 3–18) and to endosulfan (RR 14–30). CONCLUSION: The resistance of B. tabaci to pyrethroids and OPs is certainly due to their systematic use in cotton treatments for more than 30 years. Acetamiprid has been recently introduced for the control of whiteflies. Unfortunately, B. tabaci populations from Burkina Faso seem to be already resistant. Because cross‐resistance between these compounds has never been observed elsewhere, resistance to neonicotinoids could be due to the presence of an invasive B. tabaci biotype recently detected in the region. Copyright © 2010 Society of Chemical Industry  相似文献   

Carbon sequestration by forests and soils on mined land in the Midwestern and Appalachian coalfields of the U.S.     

Beyhan Y. Amichev  James A. Burger  Jason A. Rodrigue 《Forest Ecology and Management》2008

Carbon (C) accreditation of forest development projects is one approach for sequestering atmospheric CO₂, under the provisions of the Kyoto protocol. The C sequestration potential of reforested mined land is not well known. The purpose of this work was to estimate and compare the ecosystem C content in forests established on surface, coal-mined and non-mined land. We used existing tree, litter, and soil C data for fourteen mined and eight adjacent, non-mined forests in the Midwestern and Appalachian coalfields to determine the C sequestration potential of mined land reclaimed prior to the passage of the Surface Mining Control and Reclamation Act (1977). We developed statistically significant and biologically reasonable models for ecosystem C across the spectrum of site quality and stand age. On average, the highest amount of ecosystem C on mined land was sequestered in pine stands (148 Mg ha⁻¹), followed by hardwood (130 Mg ha⁻¹) and mixed stands (118 Mg ha⁻¹). Non-mined hardwood stands sequestered 210 Mg C ha⁻¹, which was about 62% higher than the average of all mined stands. Our mined land response surface models of C sequestration as a function of site quality and age explained 59, 39, and 36% of the variation of ecosystem C in mixed, pine, and hardwood stands, respectively. In pine and mixed stands, ecosystem C increased exponentially with the increase of site quality, but decreased with age. In mined hardwood stands, ecosystem C increased asymptotically with age, but it was not affected by site quality. At rotation age (60 yr), ecosystem C in mined hardwood stands was less on high quality sites, but similar for low quality sites compared to non-mined hardwood stands. The overall results indicated that the higher the original forest site quality, the less likely C sequestration potential was restored, and the greater the disparity between pre- and post-mining C sequestration stocks.  相似文献   

Landscape of somatic retrotransposition in human cancers     

Lee E  Iskow R  Yang L  Gokcumen O  Haseley P  Luquette LJ  Lohr JG  Harris CC  Ding L  Wilson RK  Wheeler DA  Gibbs RA  Kucherlapati R  Lee C  Kharchenko PV  Park PJ;Cancer Genome Atlas Research Network 《Science (New York, N.Y.)》2012,337(6097):967-971

Transposable elements (TEs) are abundant in the human genome, and some are capable of generating new insertions through RNA intermediates. In cancer, the disruption of cellular mechanisms that normally suppress TE activity may facilitate mutagenic retrotranspositions. We performed single-nucleotide resolution analysis of TE insertions in 43 high-coverage whole-genome sequencing data sets from five cancer types. We identified 194 high-confidence somatic TE insertions, as well as thousands of polymorphic TE insertions in matched normal genomes. Somatic insertions were present in epithelial tumors but not in blood or brain cancers. Somatic L1 insertions tend to occur in genes that are commonly mutated in cancer, disrupt the expression of the target genes, and are biased toward regions of cancer-specific DNA hypomethylation, highlighting their potential impact in tumorigenesis.  相似文献   

Cystocele and rectal prolapse in a female dog     

Omer Besalti  Irem Ergin 《The Canadian veterinary journal. La revue veterinaire canadienne》2012,53(12):1314-1316

A case of cystocele and prolapsed rectum is reported. The urinary bladder and rectum were repositioned and fixed by cystopexy, colposuspension, and colopexy concurrently. There was no recurrence after 3 months. This is the first report to describe cystocele in a young female dog never having been pregnant.  相似文献