Table 4.

Effect of feed withdrawal (induced molt) on S. enteritidis colonization of the crops, spleens, livers, and ceca of leghorn hensa

GroupNo. of positive hens/total (%)Log10 SE per g of cecum
CropSpleen-liverCecum
Trial 1
 Control1/12 (8.3)1/12 (8.3)2/12 (16.7)0.16 ± 0.38
 Molted6/12 (50.0)* 5/12 (41.7) 11/12 (91.7)* 3.78 ± 2.29*
Trial 2
 Control1/12 (8.3)1/12 (8.3)2/12 (16.7)0.46 ± 1.33
 Molted6/12 (50.0)* 6/12 (50.0)* 7/12 (58.3)* 2.99 ± 3.26*
  • a Hens were challenged by crop gavage with 105 CFU of S. enteritidis on day 4 of molt and cultured for Salmonella on day 9 of molt. Data are presented as means ± standard deviations, n = 12. ∗, P < 0.05, and †, P < 0.10, compared with control values.