Full Text Journal Articles by
Author J A Cason

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Optimizing buffering chemistry to maintain near neutral pH of broiler feed during pre-enrichment for Salmonella.

M E Berrang, D E Cosby, N A Cox, J A Cason, K E Richardson,

Salmonella is a human pathogen that can accompany live broilers to the slaughter plant, contaminating fully processed carcasses. Feed is one potential source of Salmonella to growing broilers. Monitoring feed for the presence of Salmonella is part of good agricultural practice. The first step in culturing feed for Salmonella (which ... Read more >>

Poult. Sci. (Poultry science)
[2015, 94(12):3048-3051]

Cited: 0 times

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Prevalence and Serogroup Diversity of Salmonella for Broiler Neck Skin, Whole Carcass Rinse, and Whole Carcass Enrichment Sampling Methodologies following Air or Immersion Chilling.

D V Bourassa, J M Holmes, J A Cason, N A Cox, L L Rigsby, R J Buhr,

The purpose of this study was to evaluate neck skin (NS), whole carcass rinse (WCR), and whole carcass enrichment (WCE) sampling procedures for Salmonella isolation and serogroup identification from the same broiler chicken carcass treated with air or immersion chilling. Commercially processed and eviscerated broiler carcasses were collected from a ... Read more >>

J. Food Prot. (Journal of food protection)
[2015, 78(11):1938-1944]

Cited: 4 times

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Sampling naturally contaminated broiler carcasses for Salmonella by three different methods.

N A Cox, R J Buhr, D P Smith, J A Cason, L L Rigsby, D V Bourassa, P J Fedorka-Cray, D E Cosby,

Postchill neck skin maceration (NSM) and whole-carcass rinsing (WCR) are frequently used methods to detect salmonellae from processed broilers. These are practical, nondestructive methods, but they are insensitive and may result in false negatives (20 to 40%). Neck skin samples comprise only 4% of the skin from the broiler carcass ... Read more >>

J. Food Prot. (Journal of food protection)
[2014, 77(3):493-495]

Cited: 4 times

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Comparison of shell bacteria from unwashed and washed table eggs harvested from caged laying hens and cage-free floor-housed laying hens.

J F Hannah, J L Wilson, N A Cox, J A Cason, D V Bourassa, M T Musgrove, L J Richardson, L L Rigsby, R J Buhr,

These studies evaluated the bacterial level of unwashed and washed shell eggs from caged and cage-free laying hens. Hy-Line W-36 White and Hy-Line Brown laying hens were housed on all wire slats or all shavings floor systems. On the sampling days for experiments 1, 2, and 3, 20 eggs were ... Read more >>

Poult. Sci. (Poultry science)
[2011, 90(7):1586-1593]

Cited: 5 times

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Effect of stomaching on numbers of bacteria recovered from chicken skin.

J F Hannah, J A Cason, J R Richardson, N A Cox, A Hinton, R J Buhr, D P Smith,

Stomaching of skin samples releases only slightly more bacteria than a single rinse. Successive rinses, however, continue to remove almost as many bacteria as the first rinse. One hypothesis to explain this observation is that relatively violent treatment of skin generates smaller pieces of skin, thus increasing the net surface ... Read more >>

Poult. Sci. (Poultry science)
[2011, 90(2):491-493]

Cited: 2 times

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Minimization of Salmonella contamination on raw poultry.

N A Cox, J A Cason, L J Richardson,

Many reviews have discussed Salmonella in poultry and suggested best practices to minimize this organism on raw poultry meat. Despite years of research and conscientious control efforts by industry and regulatory agencies, human salmonellosis rates have declined only modestly and Salmonella is still found on raw poultry. Expert committees have ... Read more >>

Annu Rev Food Sci Technol (Annual review of food science and technology)
[2011, 2:75-95]

Cited: 8 times

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Comparison of the statistics of Salmonella testing of chilled broiler chicken carcasses by whole-carcass rinse and neck skin excision.

J A Cason, N A Cox, R J Buhr, L J Richardson,

Whether a required Salmonella test series is passed or failed depends not only on the presence of the bacteria but also on the methods for taking samples, the methods for culturing samples, and the statistics associated with the sampling plan. The pass-fail probabilities of the 2-class attribute sampling plans used ... Read more >>

Poult. Sci. (Poultry science)
[2010, 89(9):2038-2040]

Cited: 3 times

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Comparison of neck skin excision and whole carcass rinse sampling methods for microbiological evaluation of broiler carcasses before and after immersion chilling.

N A Cox, L J Richardson, J A Cason, R J Buhr, Y Vizzier-Thaxton, D P Smith, P J Fedorka-Cray, C P Romanenghi, L V B Pereira, M P Doyle,

Sampling protocols for detecting Salmonella on poultry differ among various countries. In the United States, the U.S. Department of Agriculture Food Safety and Inspection Service dictates that whole broiler carcasses should be rinsed with 400 ml of 1% buffered peptone water, whereas in the European Union 25-g samples composed of ... Read more >>

J. Food Prot. (Journal of food protection)
[2010, 73(5):976-980]

Cited: 15 times

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Transmission of Salmonella to broilers by contaminated larval and adult lesser mealworms, Alphitobius diaperinus (Coleoptera: Tenebrionidae).

A J Roche, N A Cox, L J Richardson, R J Buhr, J A Cason, B D Fairchild, N C Hinkle,

The ability of the lesser mealworm, Alphitobius diaperinus (Panzer), commonly known as the darkling beetle, to transmit marker Salmonella Typhimurium to day-of-hatch broiler chicks was evaluated, as well as the spread to nonchallenged pen mates. In trial 1, day-of-hatch chicks were orally gavaged with 4 larval or 4 adult beetles ... Read more >>

Poult. Sci. (Poultry science)
[2009, 88(1):44-48]

Cited: 9 times

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A comparison of methods to estimate nutritional requirements from experimental data.

G M Pesti, D Vedenov, J A Cason, L Billard,

1. Research papers use a variety of methods for evaluating experiments designed to determine nutritional requirements of poultry. Growth trials result in a set of ordered pairs of data. Often, point-by-point comparisons are made between treatments using analysis of variance. This approach ignores that response variables (body weight, feed efficiency, ... Read more >>

Br. Poult. Sci. (British poultry science)
[2009, 50(1):16-32]

Cited: 43 times

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Recovery of bacteria from broiler carcasses after immersion chilling in different volumes of water, part 2.

J K Northcutt, J A Cason, K D Ingram, D P Smith, R J Buhr, D L Fletcher,

Experiments were conducted to determine the relationship between poultry chilling water volume and carcass microbiology. In the first study, the volume of water used during immersion chilling was found to have a significant effect on the counts of bacteria recovered from broiler carcass halves; however, these volumes (2.1 and 16.8 ... Read more >>

Poult. Sci. (Poultry science)
[2008, 87(3):573-576]

Cited: 2 times

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Partitioning of external and internal bacteria carried by broiler chickens before processing.

J A Cason, A Hinton, J K Northcutt, R J Buhr, K D Ingram, D P Smith, N A Cox,

Broiler chickens from the loading dock of a commercial processing plant were sampled to determine the incidence and counts of coliforms, Escherichia coli, and pathogenic bacteria. Feathers were removed by hand from ten 6-week-old chickens from each of seven different flocks and rinsed in 400 ml of 0.1% peptone water. ... Read more >>

J. Food Prot. (Journal of food protection)
[2007, 70(9):2056-2062]

Cited: 8 times

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Evaluation of carcass scraping to enumerate bacteria on prechill broiler carcasses.

D P Smith, J A Cason, D L Fletcher, J F Hannah,

Experiments were conducted to evaluate a scraping method for enumerating bacteria on broiler carcasses. In experiment 1, coliforms and Escherichia coli were determined by the whole-carcass rinse (WCR) method and by scraping the skin surface and rinsing the blade (BR). In each of 2 replicate trials, 4 prechill broiler carcasses ... Read more >>

Poult. Sci. (Poultry science)
[2007, 86(7):1436-1439]

Cited: 0 times

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Effect of external or internal fecal contamination on numbers of bacteria on prechilled broiler carcasses.

D P Smith, J K Northcutt, J A Cason, A Hinton, R J Buhr, K D Ingram,

During processing, fecal material may contact broiler carcasses externally or internally. A study was conducted to determine the effect of external vs. internal fecal contamination on numbers of bacteria on broiler carcasses. In each of 3 trials, 12 carcasses just prior to evisceration were obtained from a commercial processing plant, ... Read more >>

Poult. Sci. (Poultry science)
[2007, 86(6):1241-1244]

Cited: 7 times

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Comparison of four sampling methods for the detection of Salmonella in broiler litter.

R J Buhr, L J Richardson, J A Cason, N A Cox, B D Fairchild,

Experiments were conducted to compare litter sampling methods for the detection of Salmonella. In experiment 1, chicks were challenged orally with a suspension of naladixic acid-resistant Salmonella and wing banded, and additional nonchallenged chicks were placed into each of 2 challenge pens. Nonchallenged chicks were placed into each nonchallenge pen ... Read more >>

Poult. Sci. (Poultry science)
[2007, 86(1):21-25]

Cited: 13 times

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Broiler carcass bacterial counts after immersion chilling using either a low or high volume of water.

J K Northcutt, J A Cason, D P Smith, R J Buhr, D L Fletcher,

A study was conducted to investigate the bacteriological impact of using different volumes of water during immersion chilling of broiler carcasses. Market-aged broilers were processed, and carcasses were cut into left and right halves along the keel bone immediately after the final bird wash. One half of each carcass pair ... Read more >>

Poult. Sci. (Poultry science)
[2006, 85(10):1802-1806]

Cited: 8 times

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Release of Escherichia coli from feathered and featherless broiler carcasses in warm water.

J A Cason, R J Buhr, A Hinton,

Release of bacteria from individual broiler carcasses in warm water was measured as a model of bacterial contamination of scald water. Immediately after shackling and electrocution, feathered and genetically featherless broiler carcasses (n = 24 of each) were immersed individually in 42 degrees C, air-agitated tap water for 150 s. ... Read more >>

Poult. Sci. (Poultry science)
[2006, 85(10):1807-1810]

Cited: 1 time

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Recovery of Salmonellae from trisodium phosphate-treated commercially processed broiler carcasses after chilling and after seven-day storage.

D V Bourassa, D L Fletcher, R J Buhr, M E Berrang, J A Cason,

Experiments were conducted to determine the effect of prechill trisodium phosphate (TSP) treatment on reducing salmonellae recovery from broiler carcasses immediately after chilling or following 7 d of storage. Carcasses were sampled for salmonellae using whole carcass enrichment for 24 h at 37 degrees C. In each of 7 trials, ... Read more >>

Poult. Sci. (Poultry science)
[2004, 83(12):2079-2082]

Cited: 2 times

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Recovery of bacteria from broiler carcass respiratory tracts before and after immersion scalding.

R J Buhr, M E Berrang, J A Cason, D V Bourassa,

Occlusion of the trachea and decapitation were compared with a conventional unilateral neck cut for effects on bacteria entering into the respiratory tract of broiler carcasses during scalding. In experiment 1, the trachea was occluded prior to the carcass entering the scalder to determine if bacterial recovery from the respiratory ... Read more >>

Poult. Sci. (Poultry science)
[2005, 84(11):1769-1773]

Cited: 0 times

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Recovery of bacteria from broiler carcasses rinsed zero and twenty-four hours after immersion chilling.

J A Cason, M E Berrang, D P Smith,

Microbiological sampling of processed broiler carcasses often relies on the technique of whole-carcass rinsing; however, the rinse sampling is sometimes done immediately after immersion chilling and sometimes as long as 24 h after immersion chilling. To test whether carcass rinses done immediately after chilling can be compared with rinses 24 ... Read more >>

Poult. Sci. (Poultry science)
[2006, 85(2):333-336]

Cited: 0 times

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Bacteria recovery from genetically feathered and featherless broiler carcasses after immersion chilling.

R J Buhr, D V Bourassa, J K Northcutt, A Hinton, K D Ingram, J A Cason,

Feathered and featherless (scaleless) sibling broilers were reared and processed together to evaluate the influence of feathers and feather follicles on carcass bacteria recovery after chilling. In each experiment, broilers were inoculated 1 wk prior to processing by oral gavage with a suspension of salmonellae or Campylobacter at 106 cells/mL. ... Read more >>

Poult. Sci. (Poultry science)
[2005, 84(9):1499-1504]

Cited: 5 times

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Recovery of Campylobacter from broiler feces during extended storage of transport cages.

M E Berrang, J K Northcutt, J A Cason,

Feces deposited in transport cages by a Campylobacter-positive flock can cause the spread of Campylobacter to subsequent flocks placed in the same cages. This experiment was designed to determine the effect of extended cage storage on the viability of Campylobacter in feces deposited on the cage floor during commercial transport ... Read more >>

Poult. Sci. (Poultry science)
[2004, 83(7):1213-1217]

Cited: 7 times

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Effect of fecal contamination and cross-contamination on numbers of coliform, Escherichia coli, Campylobacter, and Salmonella on immersion-chilled broiler carcasses.

D P Smith, J A Cason, M E Berrang,

The effect of prechill fecal contamination on numbers of bacteria on immersion-chilled carcasses was tested in each of three replicate trials. For each trial, 16 eviscerated broiler carcasses were split into 32 halves and assigned to one of two groups. Cecal contents (0.1 g inoculated with Campylobacter and nalidixic acid-resistant ... Read more >>

J. Food Prot. (Journal of food protection)
[2005, 68(7):1340-1345]

Cited: 14 times

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Recovery of salmonellae following pH adjusted pre-enrichment of broiler carcasses treated with trisodium phosphate.

D V Bourassa, D L Fletcher, R J Buhr, J A Cason, M E Berrang,

Trisodium phosphate (TSP) has been reported to decrease the recovery of salmonellae from processed poultry carcasses. It has been suggested that the high pH and detergent-like properties of TSP solutions are responsible for the reduction in salmonellae recovery. This project was conducted to determine if controlling pH during salmonellae pre-enrichment ... Read more >>

Poult. Sci. (Poultry science)
[2005, 84(3):475-478]

Cited: 3 times

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Effect of prechill fecal contamination on numbers of bacteria recovered from broiler chicken carcasses before and after immersion chilling.

J A Cason, M E Berrang, R J Buhr, N A Cox,

Paired carcass halves were used to test whether fecal contamination of skin during processing of broiler chickens can be detected by increased bacterial counts in samples taken before and after immersion chilling. In each of three trials, six freshly defeathered and eviscerated carcasses were cut in half, and a rectangle ... Read more >>

J. Food Prot. (Journal of food protection)
[2004, 67(9):1829-1833]

Cited: 16 times

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