tes de coriza infecciosa, dependientes del factor V La coriza infecciosa es una enfermedad cosmopo- inactivada polivalente contra el coriza aviar. PDF | The bacterium Haemophilus paragallinarum is the etiological agent of infectious coryza, an upper respira- tory disease of poultry. Aquí se revisa la epizootiología de la coriza infecciosa, enfermedad del tracto respiratorio superior de . Chlamydia psittaci y el virus de la viruela aviar en.

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However, the control of CRS-associated bacterial agents is currently implemented in Cuba through the application of biosafety management corizw, which have the added advantage of being applicable not only to endemic, but to exotic infectious diseases as well The analysis of the geometric means of the titers of antibodies against aIBV Figure 3 revealed an increase in this parameter starting at week 16 and peaking at week Memorias del Congreso Nacional de Avicultura Avicult Profes ;24 1: Similarly, we would like to extend our appreciation to Drs.

Merial-Cerval, Georgia, Estados Unidos; The results corroborated the presence of M. In the light of this result, we concluded that no association of NDV with CRS could be detected in the population analyzed. Intecciosa, a significant, persistent increase in positivity for O. In addition, a fourth dose of the NDV afiar was applied, due to the low proportion of responding individuals according to the HIA titers after the third dose.

Several authors have reported that the association of M. Epiz ; 15 4: This process followed a chronic course, affecting the lower airways and resulting in facial tumefaction with a hard consistency leading to loss of vision, muco-fibrinous rhinitis, cachexia, serosal atrophy of subcutaneous fat and the coronary ridge, ciriza pneumonia of the anteroventral unilateral lobule and inefcciosa. Avicult Profes ;24 3: The large number of individuals reactive to these microorganisms could be related to the eventual appearance, at the 21 st w eek of age, of clinical signs and lesions typical of an acute respiratory process affecting the upper airways, characterized by sero-catarrhal infecciosx, blepharitis, conjunctivitis, facial edema and genital hypoplasia.


The results were interpreted as instructed by the manufacturer, considering a sample as positive for antibodies against aIBV if the serum titer was higher thanand positive to O.

Centro Nacional de Sanidad Agropecuaria; This step was followed by the inclusion of an anti-chicken IgG peroxidase conjugate, and the entire reaction was developed for 15 minutes at RT with tetramethylbenzidine as the substrate; the results were read after the addition of a infecciosw solution on a SUMA PR plate reader at nm.

Accepted for publication in July, Alzamora L, Andina I.

Shane 46on the other hand, suggests viral persistence as one of the factors contributing to the appearance of variant aIBV strains, since some recent studies prove that the dissemination of the virus from the trachea and cloaca continues for up to 70 days post-immunization. Sandra Cuello and Julia Noda, from the National Center for Agricultural Health, for their cooperation in the interpretation of the serological results. The serological study performed in birds vaccinated against aIBV revealed a pattern of seroconversion that suggests that this infectious agent is circulating among the sample population, a finding with potentially detrimental implications if not addressed promptly.


This study evaluated the positivity for O. The present study confirmed the presence of M. Atenas, Estados Unidos; Also, there are commercially available inactivated vaccines for the control of pathogenic mycoplasma species that have been tested under natural and experimental conditions corixa, 19and the poultry farming industry corisa procured vaccine preparations for the control of the main bacterial serovars associated to CRS, such as P.

Rev Sci Tech Off Int.

As a whole, these results help to better characterize the Cuban epidemiological situation and can be used to defi ne the sanitary procedures required for the control of these diseases. It affects poultry at any age, but its expressions are more severe in young individuals under intensive production systems, causing problems for the adequate application of biosafety management procedures After reaching 16 weeks, they were transferred to a Commercial Layers Unit, under a productive system of mixed ages, with a history of outbreaks of respiratory processes.


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World Poultry ;25 6: They received a well balanced diet, as indicated by trained technicians or following technical regulations for rearing used in Cuba. Rev Salud Anim ;26 1: We consider that further studies on the different serovars of O.

When studying the proportion of birds reactive to M. The serological kinetics of the bird population vaccinated against avian infectious bronchitis evidenced a second seroconversion event, probably due to the circulation of this infectious agent. J Vet Anim Sci ; La calidad de la materia prima y el alimento terminado.

Serological studies by different researchers have revealed the presence of M. This paper is therefore aimed at the evaluation of serological response to microbiological agents commonly associated with chronic respiratory syndrome in laying hens. No positive results for this microorganism were detected during the two first sampling rounds at weeks 12 and Cuba has implemented immunization programs against IBV and NDV, administering live or inactivated vaccines to the breeding or laying hen stocks, respectively A number of diverse methodologies are currently employed for the diagnosis of the main viral and bacterial agents associated to CRS, ranging from the conceptually simple methods such as the isolation of the microorganism itself, to the technically complex methods such as molecular assays.

Description of Ornithobacterium rhinotracheale gen. The reaction was scored as positive if it yielded visible, defined clumps within that time They were obtained from a Poultry Production Unit of the province of Havana, and identified by wing bands.

Received in March, These outbreaks not only affect their genetic, productive and breeding potential, but result in significant economic losses due to decreases in egg and meat production and increases in medication expenses. Avicultura Profesional ;25 2:

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