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821.
L J Carter 《Science (New York, N.Y.)》1968,161(841):551-555
822.
Carter LJ 《Science (New York, N.Y.)》1968,159(3818):963-964
823.
824.
825.
R J Thomas 《The Veterinary record》1978,102(18):394-397
Anthelmintic activity of fenbendazole in a feed formulation was tested against nematode parasites of sheep. Dose rates ranging from 1.4 mg per kg for four days to 0.4 mg per kg for 14 days removed 98 to 100 per cent of the total gastrointestinal worm burden, including large numbers of inhibited fourth stage larvae of Ostertagia circumcincta. One hundred per cent effectiveness against adult Dictyocaulus filaria was also recorded. 相似文献
826.
Pasteurella multocida was isolated from the lungs of calves that died on a farm in the south of England. This organism was inoculated experimentally into 13 calves by the intratracheal route: in all but two of the calves mild clinical disease resulted and at necropsy, three or four days later, pneumonic consolidation involving up to 22 per cent of the lung was observed. P multocida was isolated from all but two of the lungs. Of two calves inoculated intravenously with P multocida, one showed mild clinical disease and slight pneumonic consolidation at necropsy and the other remained normal. Control calves inoculated intratracheally and intravenously with sterile broth showed no signs of illness and no pneumonic consolidation. Histologically the lung lesions comprised a fibrinous bronchopneumonia with variable sized areas of coagulative necrosis, extensive deposition of fibrin and massive dilatation and oedema of the interlobular and pleural lymphatics. It is concluded that P multocida should receive more recognition as a primary pathogen. 相似文献
827.
The hydrolysis of trans-permethrin and α-naphthyl acatate by midgut, fat body, and cuticle homogenates from Pseudoplusia includens (Walker) was monitored during the development of the last instar. The midgut homogenates appeared to have two pH optima (7.6 and 8.6) for the hydrolysis of trans-permethrin, the fat body homogenates had one optimum (7.4–7.8), and the cuticle homogenates had a major optimum at 6.6. Hydrolysis of both substrates peaked during the late feeding stages for midgut and cuticle homogenates, although relative changes were not the same. Hydrolysis of trans-permethrin peaked during the late feeding stage in fat body homogenates, while hydrolysis of α-naphthyl acetate continually increased through the prepupal stage. Thus, the hydrolysis of α-naphthyl acetate is not necessarily associated with the hydrolysis of trans-permethrin. The LD50 values for trans-permethrin on the different stages appeared to reflect the influence of hydrolysis. 相似文献
828.
Glycosaminoglycans (gag) and keratan sulphate (ks) were measured in sera and synovial fluids from dogs with either osteoarthritis (oa) or rupture of the cranial cruciate ligament (ccl) and normal dogs. The dogs with oa had higher synovial fluid gag levels (P<0·002) and serum KS (P<0·03) compared to the normal dogs. No significant differences in serum gag were found in either group. In both oa and rupture of the ccl, gag levels were increased in the synovial fluid from the affected joint compared with the clinically normal (inactive) contralateral joint. Neither gag nor ks measurements correlated with serum and synovial fluid antibodies to collagen type II, synovial fluid white cell count or age of dog. It is unlikely that the measurement of these cartilage breakdown products is of value for diagnostic or prognostic use in canine arthropathies. 相似文献
829.
Barbara J. Watrous DVM Thomas W. Riebold DVM Pamela C. Wagner DVM MS Bruce D. Hultgren DVM PhD 《Veterinary radiology & ultrasound》1987,28(2):49-52
Angiography in a horse was used to confirm a pseudoaneurysm of the dorsal metatarsal artery originating from trauma. Gradual clinical resolution of the pseudoaneurysm occurred within days following the procedure. A follow-up angiogram confirmed the clinical impression. An etiology of the spontaneous resolution is presented. Probable influences included technical factors of the injection procedure that caused prolonged presence of the contrast medium within the aneurysmal sac and factors that enhance thrombus formation during angiography. 相似文献
830.
Erik R. Wisner DVM Alain P. Théon Dr Med Vet MS Thomas G. Nyland DVM William J. Hornof DVM MS 《Veterinary radiology & ultrasound》1994,35(1):53-58
High-resolution ultrasonography was evaluated as an alternative to 99mTcO-4 scintigraphy for examining size and appearance of thyroid glands in hyperthyroid cats. Thyroid ultrasound examinations were performed on 6 normal cats and 14 cats with hyperthyroidism. Thyroid lobe volume was estimated from ultrasound images using the equation for a prolate ellipsoid, π/6 (length * height * width). Total thyroid volume was estimated by adding the volume estimations of the left and right lobes. Thyroid lobes of hyperthyroid cats were considered abnormal if estimated volume exceeded the 99% confidence interval for normal thyroid volume determined from the control group. Scintigraphic examinations performed on hyperthyroid cats were evaluated for unilateral versus bilateral disease and for the presence of ectopic activity. Mean thyroid lobe volume and total thyroid volume for normal cats was 85 and 169 mm3, respectively. Mean thyroid lobe volume and total thyroid volume for hyperthyroid cats was 578 and 889 mm3. There was a significant difference in mean estimated total thyroid volume of normal and hyperthyroid cats. Thyroid lobes with greater than normal TcO-4 uptake on scintigraphy were larger and had variable homogeneity, echogenicity, and margination on ultrasound examination. There also was an 85.7% agreement of scintigraphy and ultrasonography in differentiating normal from abnormal thyroid lobes. A fair correlation between estimated total thyroid volume of hyperthyroid cats and most recent pretherapy serum thyroxine values were also found. This preliminary study indicates that thyroid ultrasound examination may provide information that is useful for diagnosis and treatment of feline hyperthyroidism. Although ultrasound provides accurate evaluation of the thyroid glands, it cannot replace 99mTcO-4 scintigraphy for screening of metastatic lesions and ectopic glands. 相似文献