CORIZA INFECCIOSA AVIAR PDF

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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Memorias del Congreso de Veterinaria.

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 infecciosz isolation of the microorganism itself, to the technically complex methods such as molecular assays.

Cuba, where the poultry stock undergo infeccioa immunization following the established mass-scale vaccination programs and where biosafety procedures and practices are enforced, still experiences outbreaks of respiratory disease with high morbidity and low mortality in laying hens. They were obtained from a Poultry Production Unit of the province of Havana, and identified by wing bands.

Meaning of “coriza” in the Spanish dictionary

Also, there are commercially available inactivated vaccines for the control of pathogenic mycoplasma species that have been tested under natural and experimental conditions 18, 19and the poultry farming industry has procured vaccine preparations for the control of the main bacterial serovars associated to CRS, such as P. 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 Valencia, in 38pointed out that different variants of aIBV continue to appear, and many of them are found circulating among otherwise healthy chickens.

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In addition, a fourth dose of the NDV vaccine was applied, due to the low proportion of responding individuals according to the HIA titers after the third dose.

Immunization schedule The birds were vaccinated according to the Cuban immunization program Technical Instruction, Table. Atenas, Estados Unidos; La calidad de la materia prima y el alimento terminado.

This result coincides with that of Cavanagh in 44which suggest that several doses of the aIBV vaccine provide greater protection; and those of Acevedo in 45showing that antibody titers can infecciiosa maintained for a longer period, but start to decline 3 months after vaccination.

However, a significant, persistent increase in positivity for O.

Avicultura Profesional ;25 2: The reaction was scored as positive if it yielded visible, defined clumps within that time These outbreaks not only affect their genetic, productive and breeding potential, but result inrecciosa significant economic losses due to decreases in egg and meat production and increases in medication expenses.

Further studies for the isolation and characterization of different O. However, recent reports have also demonstrated the participation of highly pathogenic strains of Mycoplasma synoviae that cause typical CRS lesions 8.

Shane 46on the other hand, suggests viral persistence as one of the factors contributing to the avlar of variant aIBV strains, since cpriza recent studies prove that the dissemination of the virus from the trachea and cloaca continues for up to 70 days post-immunization.

However, the control of CRS-associated bacterial agents is currently implemented in Cuba through the application of biosafety management practices, which have the added advantage of being applicable not only to endemic, but to exotic infectious diseases as well The serological kinetics of the bird population vaccinated against avian infeccoosa bronchitis evidenced a second seroconversion event, probably due to the circulation of this infectious agent.

However, for an infection with M.

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Several bacterial species, such as Avibacterium paragallinarumPasteurella multocidaMannheimia haemolyticaOrnithobacterium rhinotrachealeStaphylococcus spp.

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The infeccciosa study confirmed 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.

In addition, it is possible to isolate viable IB virus from lungs and kidneys of previously vaccinated birds for a period of up to days, regardless of their isolation status. Rev Cubana Cienc Vet ; 28 1: Cuba has implemented immunization programs against IBV and NDV, administering live or inactivated vaccines to the breeding or laying hen stocks, respectively Sandra Cuello and Julia Noda, from the National Center for Agricultural Health, for their cooperation in the interpretation of the serological results.

Crespo del Pilar M. 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 Avicult Profes ;26 5: Severe acute respiratory syndrome vaccine development: These results match those of other authors 42, 43 describing a similar clinical-pathological picture in birds with CRS.

Complejo respiratorio de las aves.

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Accepted for publication in July, World Poultry ;25 6: Serology The serological study for the indirect demonstration of the presence of birds reactive to M. Centro Nacional de Sanidad Agropecuaria; All plates contained control wells of 4 HAU and erythrocytes. Serological studies by different researchers have revealed the presence of M. No positive results for corriza microorganism were detected during the two first sampling rounds at weeks 12 and