February 21, 2024 - During the 2024 International Production & Processing Expo (IPPE), six researchers presented their findings from recently completed research projects funded by the US Poultry & Egg Association (USPOULTRY) and its Foundation as part of the TECHTalks sessions offered during the Expo.
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| Mitsu Suyemoto presenting research findings during her TECHTalks session at the 2024 IPPE. |
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As part of his research findings on 'Enhancing Immunogenicity and Protective Efficacy of Recombinant Infectious Laryngotracheitis (ILT) Vaccines in Broiler Chickens,' Dr Ravi Kulkarni, assistant professor, population health and pathobiology, North Carolina State University, explained that ILT is a very contagious respiratory disease of chickens that can lead to significant economic losses. The goal of his project was to design a vaccine with optimal immune priming and enhanced immunogenicity and anti-ILT protection. He concluded that "results provided two significant value-added findings which may lead to the development of a more effective ILT vaccine for the industry."
Dr Prafulla Regmi, assistant professor, Department of Poultry Science, University of Georgia, provided information on a research project titled, 'Automated Tracking of Laying Hens in Cage-free Aviary Environment Using Affordable Radio-Frequency Identification (RFID) Chips.' The objective of the study was to track space utilisation in cage-free aviary hens through Radio-Frequency Identification (RFID) chips. He noted that "hens were tracked from 29 to 40 weeks of age, and their daily activity within the bottom, middle and top tier of the aviary were quantified." Findings showed that incidences of keel fractures significantly corresponded to hen's activity level, where low activity birds show evidence of less fractures than high activity birds.
The findings of the study, 'Evaluation of Egg Wash Sanitisers to Reduce Salmonella Contamination on and in Turkey Eggs' was presented by Ted Brown, senior food scientist, Cargill Food Safety and Scientific Services. The purpose of this study was to determine the most effective hatch egg sanitisers to reduce Salmonella contamination on the external egg surface and to determine if hatch rates are impacted by the egg surface sanitisers tested. Hatching eggs were treated with quaternary ammonia, chlorine, thymol, peroxide, peracetic acid (PAA) and bromine. Brown concluded that "the peroxide product proved to be the most effective egg sanitiser at reducing Salmonella prevalence on the egg surface by more than 73 percent."
During his presentation on 'Identification of Genetic Determinants That Facilitate Campylobacter jejuni Survival During Poultry Processing,' Dr Jeremiah Johnson, associate professor, Department of Microbiology, University of Tennessee, mentioned that "Campylobacter jejuni (C. jejuni) is a leading cause of bacterial-derived gastroenteritis in the United States due to its ability to asymptomatically reside within the intestinal tracts of poultry." His project aimed to construct C jejuni mutants to see if they can survive in aerobic and/or refrigerated temperatures and if they are able to colonise chickens. Results revealed that mutation of only one specific gene significantly reduced aerobic, refrigerated survival. Moreover, that mutant was unable to colonise chickens.
Dr Brian Jordan, associate professor, Department of Population Health, University of Georgia, gave a presentation on the results of his investigation into the 'Cause and Prevention of False Layer Syndrome.' He explained that False Layer Syndrome (Cystic Oviduct ) has been documented but it is not a frequent presentation of most layers that appear to be outwardly normal but never come into egg production. He reviewed the two experiments conducted for his project. The first study evaluated variables that influence the development of cystic oviducts in specific pathogen free (SPF) chickens. The second study evaluated how adding infectious bronchitis virus (IBV) vaccines influenced the development of disease after IBV challenge. Jordan concluded that the data demonstrates that vaccines alone may influence the severity of lesions after challenge but are not sufficient to prevent the oviduct from being affected from a pathogenic early challenge.
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