Protection conferred against virulent Newcastle disease virus (vNDV) genotype VII by commercial double recombinant HVT vaccines and NDV live attenuated vaccine as prime/boost vaccination regimens in commercial broiler chickens carrying maternally derived antibodies (MDAs) against NDV
This study assessed the effectiveness of two commercial recombinant herpesvirus of turkey vector vaccines (rHVT-NDV-IBDV) that express the fusion (F) protein of NDV and the virus protein 2 (VP2) of infectious bursal disease virus (IBDV). In commercial broilers with maternal derived antibodies (MDAs) the efficacy of the rHVT-NDV-IBDV vaccines was evaluated when administered alone, in combination with live attenuated NDV vaccine at one-day-old, or as part of a prime/boost strategy. The vaccinated birds were challenged with the genotype VIId vNDV strain (NDV/chicken/Egypt/1/2015) at various ages (14, 24 and 35 days). In compa...
Source: Avian Pathology - May 9, 2023 Category: Pathology Authors: Ibrahim Abd Elrahman Ghanem Tamer Mahmoud Abdullatif Ola Hassanin Source Type: research
Protection conferred against virulent Newcastle disease virus (vNDV) genotype VII by commercial double recombinant HVT vaccines and NDV live attenuated vaccine as prime/boost vaccination regimens in commercial broiler chickens carrying maternally derived antibodies (MDAs) against NDV
This study assessed the effectiveness of two commercial recombinant herpesvirus of turkey vector vaccines (rHVT-NDV-IBDV) that express the fusion (F) protein of NDV and the virus protein 2 (VP2) of infectious bursal disease virus (IBDV). In commercial broilers with maternal derived antibodies (MDAs) the efficacy of the rHVT-NDV-IBDV vaccines was evaluated when administered alone, in combination with live attenuated NDV vaccine at one-day-old, or as part of a prime/boost strategy. The vaccinated birds were challenged with the genotype VIId vNDV strain (NDV/chicken/Egypt/1/2015) at various ages (14, 24 and 35 days). In compa...
Source: Avian Pathology - May 9, 2023 Category: Pathology Authors: Ibrahim Abd Elrahman Ghanem Tamer Mahmoud Abdullatif Ola Hassanin Source Type: research
Protection conferred against virulent Newcastle disease virus (vNDV) genotype VII by commercial double recombinant HVT vaccines and NDV live attenuated vaccine as prime/boost vaccination regimens in commercial broiler chickens carrying maternally derived antibodies (MDAs) against NDV
This study assessed the effectiveness of two commercial recombinant herpesvirus of turkey vector vaccines (rHVT-NDV-IBDV) that express the fusion (F) protein of NDV and the virus protein 2 (VP2) of infectious bursal disease virus (IBDV). In commercial broilers with maternal derived antibodies (MDAs) the efficacy of the rHVT-NDV-IBDV vaccines was evaluated when administered alone, in combination with live attenuated NDV vaccine at one-day-old, or as part of a prime/boost strategy. The vaccinated birds were challenged with the genotype VIId vNDV strain (NDV/chicken/Egypt/1/2015) at various ages (14, 24 and 35 days). In compa...
Source: Avian Pathology - May 9, 2023 Category: Pathology Authors: Ibrahim Abd Elrahman Ghanem Tamer Mahmoud Abdullatif Ola Hassanin Source Type: research
Protection conferred against virulent Newcastle disease virus (vNDV) genotype VII by commercial double recombinant HVT vaccines and NDV live attenuated vaccine as prime/boost vaccination regimens in commercial broiler chickens carrying maternally derived antibodies (MDAs) against NDV
This study assessed the effectiveness of two commercial recombinant herpesvirus of turkey vector vaccines (rHVT-NDV-IBDV) that express the fusion (F) protein of NDV and the virus protein 2 (VP2) of infectious bursal disease virus (IBDV). In commercial broilers with maternal derived antibodies (MDAs) the efficacy of the rHVT-NDV-IBDV vaccines was evaluated when administered alone, in combination with live attenuated NDV vaccine at one-day-old, or as part of a prime/boost strategy. The vaccinated birds were challenged with the genotype VIId vNDV strain (NDV/chicken/Egypt/1/2015) at various ages (14, 24 and 35 days). In compa...
Source: Avian Pathology - May 9, 2023 Category: Pathology Authors: Ibrahim Abd Elrahman Ghanem Tamer Mahmoud Abdullatif Ola Hassanin Source Type: research
Protection conferred against virulent Newcastle disease virus (vNDV) genotype VII by commercial double recombinant HVT vaccines and NDV live attenuated vaccine as prime/boost vaccination regimens in commercial broiler chickens carrying maternally derived antibodies (MDAs) against NDV
This study assessed the effectiveness of two commercial recombinant herpesvirus of turkey vector vaccines (rHVT-NDV-IBDV) that express the fusion (F) protein of NDV and the virus protein 2 (VP2) of infectious bursal disease virus (IBDV). In commercial broilers with maternal derived antibodies (MDAs) the efficacy of the rHVT-NDV-IBDV vaccines was evaluated when administered alone, in combination with live attenuated NDV vaccine at one-day-old, or as part of a prime/boost strategy. The vaccinated birds were challenged with the genotype VIId vNDV strain (NDV/chicken/Egypt/1/2015) at various ages (14, 24 and 35 days). In compa...
Source: Avian Pathology - May 9, 2023 Category: Pathology Authors: Ibrahim Abd Elrahman Ghanem Tamer Mahmoud Abdullatif Ola Hassanin Source Type: research
Protection conferred against virulent Newcastle disease virus (vNDV) genotype VII by commercial double recombinant HVT vaccines and NDV live attenuated vaccine as prime/boost vaccination regimens in commercial broiler chickens carrying maternally derived antibodies (MDAs) against NDV
This study assessed the effectiveness of two commercial recombinant herpesvirus of turkey vector vaccines (rHVT-NDV-IBDV) that express the fusion (F) protein of NDV and the virus protein 2 (VP2) of infectious bursal disease virus (IBDV). In commercial broilers with maternal derived antibodies (MDAs) the efficacy of the rHVT-NDV-IBDV vaccines was evaluated when administered alone, in combination with live attenuated NDV vaccine at one-day-old, or as part of a prime/boost strategy. The vaccinated birds were challenged with the genotype VIId vNDV strain (NDV/chicken/Egypt/1/2015) at various ages (14, 24 and 35 days). In compa...
Source: Avian Pathology - May 9, 2023 Category: Pathology Authors: Ibrahim Abd Elrahman Ghanem Tamer Mahmoud Abdullatif Ola Hassanin Source Type: research
Broiler performance correlates with gut morphology and intestinal inflammation under field conditions
The objective of the present study was to evaluate possible associations of intestinal villus structure and the inflammatory condition of the gut with Ross 308 broiler performance in 50 commercial farms. On day 28 of the production round, 20 randomly selected broilers per farm were weighed, euthanized, and a duodenal section was collected to determine villus length, crypt depth and the CD3+ T-lymphocytes area percentage (CD3+ %). We found a relatively low coefficient of variance (CV) for the villus length (between farms; 9.67%, within farms; 15.97%), while the CD3+ (%) had a high CV (between farms; 29.78%, within farms; 25...
Source: Avian Pathology - May 3, 2023 Category: Pathology Authors: Katrien Rysman Venessa Eeckhaut Richard Ducatelle Evy Goossens Filip Van Immerseel Source Type: research
Broiler performance correlates with gut morphology and intestinal inflammation under field conditions
The objective of the present study was to evaluate possible associations of intestinal villus structure and the inflammatory condition of the gut with Ross 308 broiler performance in 50 commercial farms. On day 28 of the production round, 20 randomly selected broilers per farm were weighed, euthanized, and a duodenal section was collected to determine villus length, crypt depth and the CD3+ T-lymphocytes area percentage (CD3+ %). We found a relatively low coefficient of variance (CV) for the villus length (between farms; 9.67%, within farms; 15.97%), while the CD3+ (%) had a high CV (between farms; 29.78%, within farms; 25...
Source: Avian Pathology - May 3, 2023 Category: Pathology Authors: Katrien Rysman Venessa Eeckhaut Richard Ducatelle Evy Goossens Filip Van Immerseel Source Type: research
Broiler performance correlates with gut morphology and intestinal inflammation under field conditions
The objective of the present study was to evaluate possible associations of intestinal villus structure and the inflammatory condition of the gut with Ross 308 broiler performance in 50 commercial farms. On day 28 of the production round, 20 randomly selected broilers per farm were weighed, euthanized, and a duodenal section was collected to determine villus length, crypt depth and the CD3+ T-lymphocytes area percentage (CD3+ %). We found a relatively low coefficient of variance (CV) for the villus length (between farms; 9.67%, within farms; 15.97%), while the CD3+ (%) had a high CV (between farms; 29.78%, within farms; 25...
Source: Avian Pathology - May 3, 2023 Category: Pathology Authors: Katrien Rysman Venessa Eeckhaut Richard Ducatelle Evy Goossens Filip Van Immerseel Source Type: research
Broiler performance correlates with gut morphology and intestinal inflammation under field conditions
The objective of the present study was to evaluate possible associations of intestinal villus structure and the inflammatory condition of the gut with Ross 308 broiler performance in 50 commercial farms. On day 28 of the production round, 20 randomly selected broilers per farm were weighed, euthanized, and a duodenal section was collected to determine villus length, crypt depth and the CD3+ T-lymphocytes area percentage (CD3+ %). We found a relatively low coefficient of variance (CV) for the villus length (between farms; 9.67%, within farms; 15.97%), while the CD3+ (%) had a high CV (between farms; 29.78%, within farms; 25...
Source: Avian Pathology - May 3, 2023 Category: Pathology Authors: Katrien Rysman Venessa Eeckhaut Richard Ducatelle Evy Goossens Filip Van Immerseel Source Type: research
Broiler performance correlates with gut morphology and intestinal inflammation under field conditions
The objective of the present study was to evaluate possible associations of intestinal villus structure and the inflammatory condition of the gut with Ross 308 broiler performance in 50 commercial farms. On day 28 of the production round, 20 randomly selected broilers per farm were weighed, euthanized, and a duodenal section was collected to determine villus length, crypt depth and the CD3+ T-lymphocytes area percentage (CD3+ %). We found a relatively low coefficient of variance (CV) for the villus length (between farms; 9.67%, within farms; 15.97%), while the CD3+ (%) had a high CV (between farms; 29.78%, within farms; 25...
Source: Avian Pathology - May 3, 2023 Category: Pathology Authors: Katrien Rysman Venessa Eeckhaut Richard Ducatelle Evy Goossens Filip Van Immerseel Source Type: research
Broiler performance correlates with gut morphology and intestinal inflammation under field conditions
The objective of the present study was to evaluate possible associations of intestinal villus structure and the inflammatory condition of the gut with Ross 308 broiler performance in 50 commercial farms. On day 28 of the production round, 20 randomly selected broilers per farm were weighed, euthanized, and a duodenal section was collected to determine villus length, crypt depth and the CD3+ T-lymphocytes area percentage (CD3+ %). We found a relatively low coefficient of variance (CV) for the villus length (between farms; 9.67%, within farms; 15.97%), while the CD3+ (%) had a high CV (between farms; 29.78%, within farms; 25...
Source: Avian Pathology - May 3, 2023 Category: Pathology Authors: Katrien Rysman Venessa Eeckhaut Richard Ducatelle Evy Goossens Filip Van Immerseel Source Type: research
Bornaviral infections in Atlantic canaries ( < em > Serinus canaria < /em > ) in Poland
This study showed no changes, despite advanced forebrain atrophy found on post-mortem examination of the bird. The organs of the studied birds were also tested with PCR tests for the presence of polyomaviruses and circoviruses. There was no correlation between the bornavirus infection and the presence of the other two viruses in the tested canaries.PMID:37097771 | DOI:10.1080/03079457.2023.2206801 (Source: Avian Pathology)
Source: Avian Pathology - April 25, 2023 Category: Pathology Authors: Ines Szotowska Aleksandra Ledwo ń Izabella Dolka Joanna Bonecka Piotr Szeleszczuk Source Type: research
Bornaviral infections in Atlantic canaries ( < em > Serinus canaria < /em > ) in Poland
This study showed no changes, despite advanced forebrain atrophy found on post-mortem examination of the bird. The organs of the studied birds were also tested with PCR tests for the presence of polyomaviruses and circoviruses. There was no correlation between the bornavirus infection and the presence of the other two viruses in the tested canaries.PMID:37097771 | DOI:10.1080/03079457.2023.2206801 (Source: Avian Pathology)
Source: Avian Pathology - April 25, 2023 Category: Pathology Authors: Ines Szotowska Aleksandra Ledwo ń Izabella Dolka Joanna Bonecka Piotr Szeleszczuk Source Type: research
Bornaviral infections in Atlantic canaries ( < em > Serinus canaria < /em > ) in Poland
This study showed no changes, despite advanced forebrain atrophy found on post-mortem examination of the bird. The organs of the studied birds were also tested with PCR tests for the presence of polyomaviruses and circoviruses. There was no correlation between the bornavirus infection and the presence of the other two viruses in the tested canaries.PMID:37097771 | DOI:10.1080/03079457.2023.2206801 (Source: Avian Pathology)
Source: Avian Pathology - April 25, 2023 Category: Pathology Authors: Ines Szotowska Aleksandra Ledwo ń Izabella Dolka Joanna Bonecka Piotr Szeleszczuk Source Type: research
