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Slightly delayed rising Requires encouragement to stand Unwilling or unable to stand Incision Normal (no swelling or discharge) Mild swelling but no discharge Moderate swelling or serosanguinous discharge Severe swelling or purulent

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in American Journal of Veterinary Research

type was graded as serous, serosanguineous, hemorrhagic, or purulent. Hair loss or lack of hair regrowth was scored on the basis of the amount of hair at the ISI, compared with the amount of hair outside the ISI. A photographic chart of the various

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in American Journal of Veterinary Research
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isolated bacteria in cases of fibrinosuppurative pneumonia are Mannheimia haemolytica , Pasteurella multocida , and Histophilus somni. 2 – 6 Lesions caused by M haemolytica start with acute fibrinous pneumonia and progress to fibrinous purulent

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in American Journal of Veterinary Research

= short and rapid breaths, 2 = mild dyspnea, or 3 = severe dyspnea), nasal discharge (0 = none or slight, 1 = mucoid or blood-tinged, 2 = mucopurulent, or 3 = purulent), nasal lesions (0 = none, 1= erythema, 2 = 1 to 5 plaques, or 3 = < 5 plaques), ocular

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in American Journal of Veterinary Research

, and adventitious lung sounds. An increased amount of serous and purulent mucus was endoscopically detected in tracheas of ponies for up to 21 days after virus inoculation. Infection with ERAV may trigger a mechanism involved in persistent inflammation

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in American Journal of Veterinary Research

liver. 1 The infection can result in reduced wool production and meat losses as a result of carcass condemnation. 2 The natural route of transmission in sheep is considered to be the contamination of superficial skin wounds with purulent material from

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in American Journal of Veterinary Research

in intensely managed calves, such as tubulointerstitial nephritis, small hepatic abscesses, and abomasal ulcers. Other lesions included severe unilateral pyelonephritis, multifocal necrotizing rumenitis, and bilateral purulent otitis media (each of

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in American Journal of Veterinary Research

Summary

Reference strains for Haemophilus parasuis serovars 1 to 7 were examined for virulence by inoculation of guinea pigs. Guinea pig response to intraperitoneal inoculation was similar for the 7 reference strains. However, apparent differences in virulence were detected after intratracheal inoculation. Cells of the reference strains for serovars 1 and 5 were most invasive, causing moribundity or death at higher doses and a persistent septicemia at lower doses. Haemophilus parasuis could be isolated from respiratory and systemic sites; purulent bronchopneumonia, pericarditis, and pleuritis were apparent in infected guinea pigs. Inoculation of cells of the reference strains for serovars 2 and 6 also resulted in bronchopneumonia and moribundity or death in some guinea pigs; however, reisolation of H parasuis and microscopic lesions at necropsy were less pronounced than those observed with serovars 1 and 5. Inoculation of cells of serovars 3, 4, and 7 induced only transient clinical signs and minimal evidence of H parasuis infection at necropsy. The data from intratracheal inoculation of guinea pigs are similar to data from other investigations in swine, indicating differences in the pathogenic potential of H parasuis strains. Thus, guinea pigs may be useful as a laboratory animal model for examining cellular factors associated with virulence and immunogenicity of H parasuis.

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in American Journal of Veterinary Research

performed with a statistical software program, k and values of P < 0.05 were considered significant. Results Animals —Thirteen adult Beagles were evaluated for inclusion in the study. During physical examination, 1 dog had bilateral purulent nasal

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in American Journal of Veterinary Research

the cast, purulent drainage at pin sites, and other drainage through the cast. Radiographic evaluation —Lateromedial and dorsopalmar digital radiographs of the left and right metacarpus of each horse were obtained prior to inclusion in the study

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in American Journal of Veterinary Research