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    The relationship between Salmonella levels in chicken spleen and mechanically separated ground chicken
    (Elsevier Sci Ltd, 2016) Alali, Walid Q.; Celik, Cagatay; Wu, Diezhang; Cui, Yue; Guran, Husnu S.; Mann, David
    The objective of this study was to determine the relationship between Salmonella levels (presence and numbers) in chicken spleens and in mechanically separated chicken (MSC) at a commercial processing plant. Composite spleen and MSC samples were collected from 18 flocks at a commercial poultry processing plant. A total of 180 samples of each type were collected and tested for Salmonella using the most probable number (MPN) and enrichment methods. Overall, Salmonella was detected in 15.6% and 27.8% of spleen and MSC samples, respectively. The mean log MPN was 0.95 and 0.85 for the spleen and MSC samples, respectively. There was a significant relationship between Salmonella presence in spleen and MSC samples. However, the log MPN numbers in MSC samples were not significantly related to those in spleen samples. Salmonella presence in composite spleen samples (an indication of systemic infection in chickens) may predict MSC contamination with this pathogen, at the flock level. (C) 2016 Elsevier Ltd. All rights reserved.
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    Salmonella prevalence associated with chicken parts with and without skin from retail establishments in Atlanta metropolitan area, Georgia
    (Elsevier Sci Ltd, 2017) Guran, Husnu Sahan; Mann, David; Alali, Walid Q.
    The objective of this study was to determine Salmonella prevalence in chicken parts with and without skin collected from retail establishments in Atlanta metropolitan area (Georgia, USA). Retail packs (n = 525) of cut-up chicken parts (i.e., breasts and thighs with skin-on and skin-off, and drumsticks with skin-on) were collected from supermarket stores in five counties in Atlanta metropolitan area. The skin on and skin-off retail chicken packs by part type were paired by production company, plant numbers, and sell-by date. The skin from skin-on parts was removed and analyzed for presence of Salmonella; whereas the top layer of meat from skin-off parts was removed and analyzed for this pathogen. Additionally, Salmonella isolates were genotypically characterized. Salmonella prevalence in the skin of chicken breasts (44.7%) was significantly (P < 0.05) higher than in the meat (12.3%) of skin-off breast samples. Similarly, the prevalence was significantly (P < 0.05) higher in the skin of chicken thighs (40.9%) than that in the meat of skin-off thighs (22.8%). Salmonella prevalence in skin of drumsticks was 41%. Among the 117 isolates characterized, eight Salmonella serotypes were identified including Heidelberg (46.1%), Kentucky (26.4%), Typhimurium (11.10, Infantis (5.1%), Seftenberg (2.5%), and Thompson (0.8%). High clonality of Salmonella isolates within and between chicken part type was observed. Skin-on chicken part may act as a greater source of Salmonella transmission to consumers compared to skin-off chicken parts. (C) 2016 Elsevier Ltd. All rights reserved.