Browse Items: 301
Effect of selected modified atmosphere packaging on Campylobacter survival in raw poultry
Most current research on Campylobacter has focused on preharvest or processing plant cross-contamination. Little is known about the effect of storage environment on the survival of Campylobacter on raw poultry. We evaluated the effects of modified storage atmosphere and freezing on the survival of naturally occurring Campylobacter on raw poultry.…
Determination of thermal inactivation kinetics of Listeria monocytogenes in chicken meats by isothermal and dynamic methods
The objective of this research is to determine the thermal inactivation kinetics of Listeria monocytogenes in chicken breast meat using both isothermal and dynamic conditions. A four-strain cocktail of L. monocytogenes was inoculated to chicken breast meat. Isothermal studies were performed by submerging samples under hot water maintained at…
Bacteria Recovered from Whole-Carcass Rinsates of Broiler Carcasses Washed in a Spray Cabinet with Lauric Acid-Potassium Hydroxide
Effects of spray washing carcasses with Lauric Acid (LA)-Potassium Hydroxide (KOH) on bacteria recovered from Whole-Carcass Rinsates (WCR) were examined. Carcass skin was inoculated with antibiotic resistant strains of Escherichia coli, Salmonella Typhimirum and Campylobacter coli. The first trial examined effects of washing carcasses with water,…
Adaptive Image Processing Methods for Improving Contaminant Detection Accuracy on Poultry Carcasses
A real-time multispectral imaging system has demonstrated a science-based tool for fecal and ingesta contaminant detection during poultry processing. In order to implement this imaging system in the commercial poultry processing industry, the false positives must be removed. To do this, we tested and implemented additional image processing…
Spectral line-scan imaging system for high-speed non-destructive wholesomeness inspection of broilers
A spectral line-scan imaging system was developed for automated online wholesomeness inspection of broilers and evaluated in a commercial chicken processing plant. Real-time online hyperspectral images acquired by the system on a 140 bird-per-minute processing line were analyzed to optimize Region of Interest (ROI) size and location and to…
Effects of Polyphosphate Additives on the pH of Processed Chicken Exudates and the Survival of Campylobacter
Campylobacter spp. are nutritionally fastidious organisms that are sensitive to normal atmospheric oxygen levels and lack homologues of common cold shock genes. At first glance these bacteria seem ill equipped to persist within food processing and storage conditions; however, they survive in numbers sufficient to cause the largest number of…
Kinetics of Thermal Destruction of Salmonella in Ground Chicken Containing trans-Cinnamaldehyde and Carvacrol
We investigated the heat resistance of an eight strain cocktail of Salmonella spp. in chicken supplemented with cinnamaldehyde (0 – 1.0%, w/w) and carvacrol (0 – 1.0%, w/w). Inoculated meat was packaged in bags which were completely immersed in a circulating water bath and held at 55 to 71C for predetermined lengths of time. The recovery medium was…
Quality and safety of broiler meat in various chilling systems
Chilling is a critical step in poultry processing to attain high-quality meat and to meet the USDA-Food Safety and Inspection Service temperature standards. This study was conducted to determine the effects of commercially available chilling systems on quality and safety of broiler meat. A total of 300 carcasses in 2 replications were randomly…
Initial Contamination of Chicken Parts with Salmonella at Retail and Cross-Contamination of Cooked Chicken with Salmonella from Raw Chicken during Meal Preparation
The current study was undertaken to acquire data on contamination of chicken parts with Salmonella at retail and to acquire data on cross-contamination of cooked chicken with Salmonella from raw chicken during meal preparation. Whole raw chickens (n ~ 31) were obtained from local retail stores and cut into two wings, two breasts without skin or…
Prevalence of Salmonella on Retail Broiler Chicken Meat Carcasses in Colombia
A cross-sectional study was performed to estimate the prevalence of Salmonella on retail market chicken carcasses in Colombia. A total of 1,003 broiler chicken carcasses from 23 departments (one city per department) were collected via a stratified sampling method. Carcass rinses were tested for the presence of Salmonella by conventional culture…
Descriptive and Surveillance Studies of Suppliers to New York and New Jersey Retail Live-Bird Markets
Low pathogenicity avian influenza virus (AIV) H7N2 has been isolated since 1994 from retail live-bird markets (LBMs) in the northeastern United States. This study examines the suppliers to the LBMs in New York and New Jersey. In 2001, 185 supplier premises in nine states were surveyed for the presence of AIV by virus isolation (VI) in embryonating…
Cholesterol and vitamin D content of eggs in the U.S. retail market
Nationwide sampling in the U.S. of whole large eggs, to update values in the United States Department of Agriculture (USDA) National Nutrient Database for Standard Reference (SR) (http://www.ars.usda.gov/nutrientdata), was conducted in 2000–2001 and in 2010. Retail cartons of large eggs were obtained from 12 supermarket locations using statistical…
Temperature Sequence of Eggs from Oviposition Through Distribution: Transportation--Part 3
The Egg Safety Action Plan released in 1999 raised many questions concerning egg temperature used in the risk assessment model. Therefore, a national study by researchers in California, Connecticut, Georgia, Iowa, Illinois, North Carolina, Pennsylvania, and Texas was initiated to determine the internal and external temperature sequence of eggs from…
Temperature Sequence of Eggs from Oviposition Through Distribution: Processing--Part 2
The Egg Safety Action Plan released in 1999 raised questions concerning egg temperature used in the risk assessment model. Therefore, a national study was initiated to determine the internal and external temperature sequence of eggs from oviposition through distribution. Researchers gathered data from commercial egg production, shell egg…
Temperature Sequence of Eggs from Oviposition Through Distribution: Production--Part 1
During Egg Safety Action Plan hearings in Washington, DC, many questions were raised concerning the egg temperature (T) used in the risk assessment model. Therefore, a national study was initiated to determine the T of eggs from oviposition through distribution. In part 1; researchers gathered data on internal and surface egg T from commercial…
Pathogen prevalence and microbial levels associated with restricted shell eggs
Restricted shell eggs that do not meet quality standards for retail but maintain acceptable quality for inclusion in further processed eggs are often diverted to further processing. A study was conducted to characterize the microbiological populations present on and in these eggs. On a single day, restricted eggs were collected from three shell egg…
The dopaminergic system and aggression in laying hens
The dopaminergic system is involved in the regulation of aggression in many species, especially via dopamine (DA) D1 and D2 receptor pathways. To investigate heritable differences in this regulation, 2 high aggressive strains [Dekalb XL (DXL) and low group egg productivity and survivability (LGPS)] and one low aggressive strain (low group egg…
Physical quality and composition of retail shell eggs
There are a number of specialty shell eggs available to consumers in the US retail market. A survey consisting of white and brown large shell eggs with various production and nutritional differences (traditional, cage-free, free-roaming, pasteurized, nutritionally enhanced, and fertile) was conducted to determine if physical quality and…
Short preincubations during egg storage increases hatchability and chick quality in long-stored broiler eggs
It is recognized that cool egg storage for 8 d or longer, commonly employed in broiler parent and commercial layer production, reduces hatchability. In this study, we investigated the efficacy of short periods of incubation during egg storage (SPIDES) in the restoration of hatchability of broiler hatching eggs stored for 21 d. Prolonged cool…
Reduction of high pathogenicity avian influenza virus in eggs from chickens once or twice vaccinated with an oil-emulsified inactivated H5 avian influenza vaccine
The negative impact of high pathogenicity avian influenza virus (HPAIV) infection on egg production and deposition of virus in eggs, as well as any protective effect of vaccination, is unknown. Individually housed non-vaccinated, sham-vaccinated and inactivated H5N9 vaccinated once or twice adult White leghorn hens were challenged…