TABLE 1

Summary of phenotypic properties of Salmonella isolates (n = 283)

Serotype (no. of strains)Resistance pattern (R-type), no. of strainsSourceZnCu
MIC (mM)Presence of czcD (no. of strains)aLevel in sample (mg/kg)MICPresence of pcoA (no. of strains)aLevel in sample (mg/kg)
FeedFecalFeedFecal
Schwarzengrund (3)AmStTeAxChKm (1)Swab801961,43624014260
Pansusceptible (2)Swab801961,43624014260
Mbandaka (7)AmClStSuTeAx (1); AmSuChCe (1); StSuTe (2)Swab80196–527.31,436–4,167.220–24014–194.7260–1,209.8
AmStTe (1); AmClStSuTeAxCh (1)Fecal4–80109.0–144674–9,027.220–240 (1), + (1)157.7–1731,142–1,704.2
SuTe (1)Feed801,66810,5301612681,852
Anatum (9)AmTeAxChCeXNL (1); AmTeAxChXNL (1); AmStTeAxCh/XNL (3)Swab80140.1–171.3774–1,383.120–24011.9–97137.8–742
Pansusceptible (2)Swab4–80171.3–2011,017–1,69120034406
AmStTeAxCh (2)Fecal80967872401461,496
Derby (17)StSuTe (4)Swab4–80132.7–201939.9–11,6312009.4–34112.9–406
AmStSuTeAxChCe/XNL (6); AmClStSuTe (1); AmStSuTe/Km (2)Fecal4–80108.8–2,000865.9–11,18520–2408.3–316110.6–1,911
AmStSuTe (1); AmStSuTeAxCh (1)Swab4–801,389.1–1,393.28,714.8–10,146.2201249.3–268.31,645.5–1,875.3
Pansusceptible (1)Fecal4091.4–166.3639.2–1,229.420–240 (6), + (1)6.2–17395–143.9
Te (1)Feed80147.6719.7160146.2919.2
Heidelberg (72)AmStTeKm (1)Feed40127.2736.120120.986.7
AmStTeKm (12); AmStTeKmGm (2); AmStSuTeKmGm/Ax (2)Swab4–8093.4–7,383.7710.8–8,494.720–240 (7), + (9)18.7–1,384.3106.6–1,564.3
AmStTeKm/AxChkmXNL (31); AmStSuTeKm/Gm (10); AmClStSuTeKm (1)Fecal4–8079–2,000675.3–11,63120–240 (17), + (25)135.4–308137.3–2,130.7
AmStTeAxChKmXNL (5); AmStTeAxChKmGm (4)Fecal4–8092.9–1,549.1675.3–8,95220–240 (4), + (5)203.2–291.112,176–1,839.1
AmStTeAxChKmAnXNL (1); AmStTeAxChKm (2)Fecal80178–1911,059–1,19724014–87160–172
AmStTeKm (1)Feed401,330.3948.6200229.51,412.7
Typhimurium (122)AmClStSuTe (28); AmStSuTeKm/Ax (4); AmClStSuTeAx/Ch (3)Swab4–80 (2), + (12)109.5–183.1541–97016–240 (10), + (4)7.8–17381.9–1,142
AmClStSuTe/Ch (2); AmClStSuTeKm/Gm (2)Swab4–80 (5), + (14)97.5–1,685541–11,36516–240 (18), + (1)7.3–27189.3.1–2,001
AmClStSuTe (39); AmClStSuTeAx (9); AmStSuTeKm (4)Fecal4–80 (7), + (45)81.3–1,762.2787–11,36516–240 (47), + (5)9.9–26290.7–2,001
AmStTeKm (8); AmClStSuTeKm (3)Fecal4–80 (11)89.1–1,728.2692.6–7,852.420–240 (2), + (9)7.5–365.2152.3–1,703
AmClStSuTeAxCh (6); AmClStSuTeAxChKmXNL (2)Fecal4–80 (1), + (7)140–161.1674–1,383.120–240 (7), + (1)7.6–173119.1–1,142
AmClStSuTeAxChXNL (4); AmClStSuTeAxChKmGm (1); AmClStSuTeCh (1)Fecal4–80 (4), + (1)144–160.9674–1,063.620–24014.4–173123.8–1,142
AmClStSuTeAxKmGm (1); ClStSuTe (2); AmClStSuTeChKmGm (2)Fecal4–80 (3), + (2)99.1–1,347.5541–8,952.04–240 (3), + (2)3.2–203.2101.8–1,543.4
AmClStSuTe (1)Feed81116.2761.320019.487.8
Worthington (8)AmTeAxChCeXNL (2)Fecal80115.2–134.41,066.7–1,463.52429.3–31.4126.8–177
AmStTeAxChKmGm (1)Swab8081.9732.1241133935.7
AmStTeAxChKmXNL (1)Fecal801,64512,3252413022,397
AmStTe (1)Feed801,68511,3652412712,001
AmTeAxChCe (1); AmTeAxChCeXNL (1)Swab80119.6734.62017.389.3
AmStTeAxChKmGmXNL (1)Swab8081.9732.1240133935.7
Rissen (1)AmStTeKm (1)Swab80129.61,254.720115.7138.7
Enteritidis (1)AmClStSuTe (1)Swab8014077416097742
Infantis (9)AmClStSuTeAxChKmXNL (2); AmClStSuTe (1)Fecal4–80 (2), + (1)86.4–146.91,383.116–20011.9–16.2135.6
AmClStSuTeAxChKmGm (2); AmClStSuTeAxChKmGmXNL (1); AmAxChXNL (1)Fecal4–80111–169.1674–1,26616–20017–173149.2–1,142
AmClStSuTeChKmGmXNL (1); AmAxChXNL (1)Swab8097.5–160.9990.5–1,063.620011.7–15.2123.8–144.4
Agona (5)StSuTeKmGm (2); AmStSuTeAxChKmGmXNL (1)Fecal40105.1–177.3991-.9–1,007.716–2008.5–14.9133.9–140.5
AmStSuTeAxChKmGmXNL (1)Swab80173.6883.220110.1133.9
Te (1)Feed801,3756,895.0160279.21,391.4
Senftenberg (7)AmClStSuTeAxChGmKmXNL (4); AmClStSuTeGm (1); StSuTeKmGm (1)Fecal4–80178–1,636.2657.8–8,364.920–240 (1), + (4)14–291.1172–1,643.1
Pansusceptible (1)Swab801911,05924187160
Amsterdam (1)Pansusceptible (1)Swab801981,04820021161
London (1)Te (1)Feed401,55812,1202012622,144
Ohio (2)Pansusceptible (1)Swab801911,05924087160
AmClStSuTeKmGm (1)Fecal40155.21,043.724110.9107.8
Inverness (1)Pansusceptible (1)Feed801319242004.899
Muenchen (3)AmStTeKm (1)Fecal801471,691240138406
Pansusceptible (2); AmStTeKm (1)Fecal801921,18320015120
Rough_Ob:e,n,x (1)Pansusceptible (1)Fecal801921,18320015120
Serogroup E (5)AmStSuTeChCeGm (1); AmStTeKmGm (1); AmClStSuTeChKmGm (1); ClStSuTe (1)Fecal4–80139.5–1,393.2855.2–1,215.916–240 (2), + (2)23.1–249.385.5–1,875.3
Te (1)Feed80119.9731.416014.1102.0
Serogroup A-I+ (3)AmStTeKmGm (1); AmStTe (1)Swab8081.9–1,552.1732.1–8,629.216+ (2)133–229.2935.7–1,498.1
AmStSuTeKmGm (1)Fecal80111675.41611778.2
Serogroup B (5)AmClStSuTeChKmGm (2); AmClStSuTe (1); AmStTeKmGm (1)Fecal4–80116.2–1,393.2761.3–10,146.216+ (4)8.8–249.387.8–1,875.3
StSuTe (1)Swab801,389.18,714.8201268.31,645.5
Serogroup A-S+ (2)AmClStSuTe (1); AmStTeKmGm (1)Fecal80119.6–155.2734.6–1,142.116+ (2)7.3–10.389.3–127.8
  • a 0, negative; +, positive.