Open Access
Copyright: The authors. This article is an open access
article licensed under the terms of the Creative Commons Attribution License
(http://creativecommons.org/licenses/by/2.0) which permits unrestricted use,
distribution and reproduction in any medium, provided the work is properly
cited.
Research
2.
Incidence of Nocardia species in raw milk
collected from different localities of Assiut city
of Egypt -
Nahed Mohamad Wahba, Neveen AbdelGhany Elnisr,
Nagah Mohamad Saad, Saad Mohamad Nasr, Walaa
Mahmoud Ali
Vet World. 2011; 4(5): 201-204
doi:
10.5455/vetworld.2011.201-204
Abstract
This study aimed to isolate and enumerate
Nocardiae from the examined raw milk samples. 240
random milk samples were collected from cows,
buffaloes, sheep and goats from different
localities in Assiut city- Egypt. The incidences
of Nocardia spp. were 47.8, 43.3, 53.3 and 66.7%
with average counts of 3.8 x104, 4.5x104, 1.4x104
and 7.6x103/CFUmL of the examined samples,
respectively. Pathogenicity of the isolates was
also studied. N. otitidiscavarium and N.
brasiliensis caused sudden death of rats while, N.
farcinica and N. carnea strains were non
pathogenic. Other species caused several lesions.
It was concluded from the study that, Nocardia
species are existed in retailed and fresh milk of
different farm animals. Most of the isolated
strains were highly pathogenic to rats.
Consequently, preventive measures should be taken
to protect consumers from being infected.
Keywords: Nocardia species, Raw milk,Incidence,
Pathogenicity, Zoonosis.
