12 research outputs found
Efficacy of biosecurity measures in the control of microorganisms associated to endometritis in sows. Preliminary study
Biosecurity can be defined as all the applied measurements that take as a target to minimize the sanitary risks in a stock farm, and include
measurements related to the facilities and the management. The efficacy of these measurements must be reflected in a decrease of the microorganism
in different productive phases. A study was carried out to evaluate if the set of applied measurements influences the microbial uterine contamination
after farrowing of healthy sows. Two swine farms were been completed about biosecurity measurements was completed and a microbiological study of
uterine swabs of sows after the farrowing was carried out. A total of 60 animals were studied, and 27 (45%, 95% CI [33.3%, 56.7%]) resulted positive.
Significant differences between production and selection and multiplication farms were detected (OR = 3.44, IC 95%, 1.135-11.047). The colonization
frequency was 65% CI [51.3%, 78.6%] and 35% CI [21%, 49%] in production and selection farm, respectively (P = 0.02). A total of 66 isolates were
obtained, represented mainly by Staphylococcus spp. (33.33%) and Aerococcus spp. (27.27%), although other species included in the genus Streptococcus
(9.09%), Enterococcus (6.06%) and Pseudomonas (4.55%), as well as different fungi species were also isolated. The frequency of isolation of different
microorganisms was similar in both farms, with the exception of the genus Enterococcus that was not isolated in the production farm (P = 0.01). The
questionnaire showed some differences in biosecurity measures in the selection and multiplication farm when it is compared to the production farm,
which together with the increased uterine microbial contamination observed in the latter leads us to propose a preliminary hypothesis about the possible
risk factors associated with this process, highlighting the absence of measures to avoid the presence of vectors and the establishment of strict protocols
for cleaning and disinfectio
Risk factors associated with the antimicrobial resistance of staphylococci in canine pyoderma
This study reports the susceptibility to antimicrobial agents of staphylococci
4 (n=105) isolated from dogs, and the factors associated with this resistance. The study
5 animals were 23 healthy dogs (group A), 24 with first-time pyoderma (group B), and 27
6 with recurrent pyoderma that had undergone long-term antibiotic treatment (group C).
7 Staphylococci were more commonly isolated from the pyoderma-affected than the
8 healthy dogs (p<0.0001).
9
10 Some 78% of the isolates were resistant to at least one antimicrobial agent.
11 Resistance to amoxicillin-clavulanate,cephalosporins (OR 4.29, 95% CI [1.15, 16.3]
12 respectively), enrofloxacin (OR 9.47, 95% CI [1.53, 58.5]) and ciprofloxacin (OR 79.7
13 95% CI [3.26, 1947.4]) was more common among group C isolates. Some 32% of all
14 the isolates were multiresistant (MR) and 10.4% were methicillin-resistant (MRS). The
15 probability of isolating MRS staphylococci in group C increased by a factor of four
16 (95% CI [1.18, 17.9]) compared to A plus B. Multi-resistant (MR) isolates were
17 obtained more commonly from urban than rural dogs (OR 3.79, 95% CI [1.09, 13.17]).
18 All the MRS staphylococci encountered were obtained from urban dogs and more
19 commonly from male dogs (p= 0.07).
20
21 This study shows that dogs bred in urban habitat, with a history of antibiotic
22 therapy in the past year represents significant risk of being carriers of isolates resistant
23 to methicillin (MRS) and other antimicrobials. These factors should be considered
24 before applying an antimicrobial treatment in veterinary clinics
Productive and sanitary characterization of suckling calves breeding in C贸rdoba and Santa F茅 (Argentina)
A study has been made in 72 dairy farms in the Argentine provinces of Cordoba and Santa Fe between years 2000 and 2002. This article is mainly referring to the calves in suckling stage, before its transfer to the pasture. The objective was to make a valuation of the main charac-teristics of farms and the breeding system of dairy calves in the zone. A questionnaire was designed, structuring the questions in six different sections: questions of general type, workers, feeding, handling, other species and contagious, and biosecurity and health. Among the results, it emphasizes the big size of farms, the great diffusion of open systems and the little pursuit of biosecurity measures.Se ha realizado un estudio, entre los a帽os 2000 y 2002, en 72 explotaciones bovinas de aptitud l谩ctea situadas en las provincias argentinas de C贸rdoba y Santa F茅. El estudio se centr贸 principalmente en las primeras fases de producci贸n de terneros, previamente a su traslado a los pastos. El objetivo fue realizar una valoraci贸n de las principales caracter铆sticas de las explotaciones y el sistema de cr铆a de terneros en la zona. Para ello, se dise帽贸 un cuestionario, estructu-r谩ndose las preguntas en seis apartados: cuestiones de tipo general, personal, alimentaci贸n, pr谩cticas de manejo, otras especies y contagio y, bioseguridad y sanidad. Entre los resultados, destaca el gran tama帽o de las explotaciones, la amplia difusi贸n de sistemas abiertos y el escaso seguimiento de medidas de bioseguridad
Multi-Etiological Nature of Tuberculosis-Like Lesions in Condemned Pigs at the Slaughterhouse
Tuberculosis-like lesions (TBL) in pigs have been associated with microorganisms other
than mycobacteria. In this work a histopathological and microbiological evaluation of TBL in
pigs is shown. A total of 352 samples belonging to 171 pigs totally condemned at slaughterhouse
due to generalized TBL were sampled and selected for analysis. Pyogranulomatous
(56.2%) and granulomatous lesions (20.2%) were observed in all analysed organs. Most of
the granulomas observed in both lymph nodes and lungs belonged to more advanced
stages of development (stages III and IV) whereas in the liver and the spleen most of lesions
belonged to intermediate stages (stages II and III). Different microorganisms were simultaneously
detected from TBL in the 42.7% of the animals. Mycobacterium tuberculosis complex
(MTC) (38%), coryneform bacteria (40.3%) and streptococci (28.1%) were the main
groups of microorganisms detected after bacteriological analysis, with Trueperella pyogenes
and Streptococcus suis as the most frequently isolated species. Mycobacteria
belonging to MTC were the most frequently detected pathogens in granulomatous and pyogranulomatous
lesions in submandibular lymph nodes (32.7%) and coryneform bacteria
were the microorganisms more frequently isolated from lungs (25.9%) and spleen samples
(37.2%). These results may provide new insights into the pathogenesis and diagnosis of
this pathology. The importance of coryneform bacteria and streptococci in such processes
must be evaluated in future studie