Early sequential findings in the genitalia of rams experimentally infected with Actinobacillus seminis

New Zealand Veterinary Journal
W A Al-Katib, S M Dennis

Abstract

To investigate and assess the sequential pathological changes in the epididymis and testis of young rams injected intra-epididymally with Actinobacillus seminis. Twenty yearling Suffolk and Suffolk-cross rams were randomly divided into two groups comprising 16 test and four control animals. Each test ram received 2.3 x 109 cfu/ml of A. seminis injected intra-epididymally. Every 24 h post-inoculation (p.i.), two test rams were randomly selected, euthanised, and necropsied, until the end of the experiment at 192 h p.i. One control animal was euthanised at 24 h, 48 h, 96 h and 144 h p.i., respectively. The reproductive tract of each ram was carefully examined, lesions photographed, and tissues cultured. Thin sections of tissue samples were fixed and examined by light microscopy; additionally, epididymal tissues were examined by scanning electron microscopy (ScEM). Gross lesions were observed in the cauda epididymis of all test rams, and ranged from swelling at 24 h p.i. through enlargement and granuloma formation from 72 h p.i., to gradual enlargement and increasing firmness by 192 h p.i. Gross testicular atrophy was observed in three rams. Histologically, spermatic granulomas were evident in the epididymis and the tunica vaginali...Continue Reading

References

Jul 1, 1977·New Zealand Veterinary Journal·A N BruereH M Chapman
Jan 1, 1977·Current Topics in Microbiology and Immunology·A E Butterworth
Jan 1, 1971·Veterinary Pathology·I M ParsonsonK McEntee
May 1, 1966·Australian Veterinary Journal·G C SimmonsC G Ludford
Nov 1, 1980·The Veterinary Record·C O AjaiS M Dennis
Apr 26, 2002·Clinical and Experimental Allergy : Journal of the British Society for Allergy and Clinical Immunology·R J Bischof, E N T Meeusen
Aug 2, 2005·The Veterinary Record·W A Al-Katib, S M Dennis
May 31, 2007·New Zealand Veterinary Journal·W A Al-Katib, S M Dennis

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Citations

Dec 8, 2009·New Zealand Veterinary Journal·W A Al-Katib, S M Dennis
Mar 5, 2014·TheScientificWorldJournal·Valéria S MoustacasTatiane A Paixão
Dec 29, 2020·The Veterinary Clinics of North America. Food Animal Practice·Jamie L Stewart, Clifford F Shipley

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Methods Mentioned

BETA
Scanning
light microscopy

Software Mentioned

ScEM

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