Assessment of the potential relationship between egg quality and infectious bronchitis virus infection in Australian layer flocks

Hewson, KA; Steer, PA; Devlin, Joanne M.; Noormohammadi, Amir H.; Ignjatovic, Jagoda

doi:10.1111/avj.12156

Cited by 6 publications

(5 citation statements)

References 45 publications

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“…Probosciger aterrimus, which has a relatively long lifetime, has a slow reproductive ability even in captivity (Heinsohn et al 2009). A study that measured egg quality in the Haugh unit on layer flocks related to IBV in Australia found that IBV is one of the potential risk factors for eggs with poor Haugh units (Hewson et al 2014). Furthermore, eggs of IBV infected chicken appeared to be malformed with thin albumin (Bande et al 2016).…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, eggs of IBV infected chicken appeared to be malformed with thin albumin (Bande et al 2016). A decrease in egg quality was observed after the virus had ceased replicating (Hewson et al 2014) and after clinical respiratory symptoms had stopped. Egg evaluation in Psittacine is more complex than layers poultry due to comparatively low laying frequency.…”

Section: Discussionmentioning

confidence: 99%

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Detection of infectious bronchitis-like virus isolated from psittacines at breeding facilities

et al. 2021

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Abstract. Suryaman GK, Soejoedono RD, Poetri ON, Setiyono A, Handharyani E. 2021. Detection of infectious bronchitis-like virus isolated from psittacines at breeding facilities. Biodiversitas 22: 4261-4265. Captive breeding of parrots has been carried out in Indonesia to fulfill market demand for pets and support conservation efforts. However, there is limited information about Infectious Bronchitis Virus (IBV) in captive parrots. Therefore, this study examines IBV virus in psittacines and observes the pathological changes in inoculated chicken embryos. Cloacal swabs were obtained from 31 psittacine birds consisting of 15 sulfur-crested cockatoos (Cacatua sulphurea), 10 palm cockatoos (Probosciger aterrimus), two blue and yellow macaws (Ara ararauna), two green-winged macaws (Ara chloropterus), and two scarlet macaws (Ara macao). Swabs were also injected for 9 days to obtain specific pathogen-free (SPF) embryonated chicken eggs, and allantoic fluids were collected after 7 days. The residual cloacal swabs and allantoic fluid samples were tested for IBV by reverse transcription polymerase chain reaction (RT-PCR) targeting spike 1 glycoprotein (S1) and nucleoprotein (N) gene by primer set XCE2+/XCE2- and IBVN+/IBVN-, while the harvested inoculated embryos were examined for histopathological lesions by hematoxylin-eosin staining. Three and one allantoic fluid of C. sulphurea and P. aterrimus respectively were found positive for IBV by primer set IBVN+IBVN-. However, there was no significant difference in the inoculated embryo's gross anatomy, and the slight histopathological changes observed were not caused by the virus. Therefore, it is unclear whether the IB-like virus causes clinical disease manifestation in both Psittacine species or the chicken embryo. This is the first study carried out on IB-like viruses for both species.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Detection of infectious bronchitis-like virus isolated from psittacines at breeding facilities

et al. 2021

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“…7 Cloacal swabs were collected from 20 chickens from each flock approximately every 6 weeks. 7 Cloacal swabs were collected from 20 chickens from each flock approximately every 6 weeks.…”

Section: Avianmentioning

confidence: 99%

“…An investigation in poultry aimed to determine if there was a relationship between the production of eggs with poor internal quality, as measured by Haugh units, and the detection of infectious bronchitis virus (IBV) in Australian layer flocks. 7 Cloacal swabs were collected from 20 chickens from each flock approximately every 6 weeks. IBV was detected from most of the flocks, but infection was primarily subclinical and was usually the A-vaccine-related field strain, even in flocks where the vaccine was not used.…”

Section: Avianmentioning

confidence: 99%

In this issue – April 2014

Jackson¹

2014

Aust Veterinary J

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“…Infectious bronchitis (IB) is a highly contagious disease caused by a group 3 gammacoronavirus that affects both broiler and layer poultry production worldwide (Balestrin et al, 2014;Hewson et al, 2014). The incubation period of infectious bronchitis virus (IBV) in fully susceptible hens is 18-36 hours (Sevoian & Levine, 1957).…”

Section: Introductionmentioning

confidence: 99%

Infectious bronchitis virus and brown shell colour: Australian strains of infectious bronchitis virus affect brown eggshell colour in commercial laying hens differently

2016

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The aim of the current study was to assess any effect of wild and vaccine Australian infectious bronchitis virus (IBV) strains on shell colour in brown-shelled eggs. In Experiment 1, eggs were collected from day 1 to day 13 post-inoculation (p.i.) from unvaccinated laying hens challenged with IBV wild strains T and N1/88 and from a negative control group of hens. In Experiment 2, eggs were collected from 2 to 22 days p.i. from unvaccinated and vaccinated laying hens challenged with either a wild or a vaccine strain of IBV. In Experiment 1, there was a significant effect (P < 0.05) of day p.i. and of viral strain on shell reflectivity, L* and protoporphyrin IX (PP IX) in eggshells, with and without cuticle. The mean PP IX/g of shell with and without cuticle was significantly higher on day 1 p.i. compared to day 7, after which PP IX increased with day p.i. In Experiment 2, shell reflectivity and L* increased and PP IX decreased with increased day p.i. until day 12. Shell reflectivity and L* decreased slightly after day 12 and increased again towards day 22. Shell reflectivity, L* and PP IX were not significantly different for eggshells from unvaccinated and vaccinated laying hens in the intact eggshell, but were significantly different in shells from which cuticle had been removed. In conclusion, the IBV strains reduced the intensity of brown shell colour to different extents with a lower amount of PP IX in eggshells.

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Assessment of the potential relationship between egg quality and infectious bronchitis virus infection in Australian layer flocks

Abstract: IBV is prevalent in Australian layer flocks, but infection was primarily subclinical. The results complement previous reports indicating that there are many potential risk factors for the production of eggs with poor Haugh units.

Cited by 6 publications

References 45 publications

Detection of infectious bronchitis-like virus isolated from psittacines at breeding facilities

Detection of infectious bronchitis-like virus isolated from psittacines at breeding facilities

In this issue – April 2014

Infectious bronchitis virus and brown shell colour: Australian strains of infectious bronchitis virus affect brown eggshell colour in commercial laying hens differently

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