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Table 6 Effect of dietary vitamin K (VK) supplementation and Salmonella Enteritidis (SE) challenge on tibia bone calcium (Ca) concentration of laying hens (n = 6)

From: Vitamin K alleviates bone calcium loss caused by Salmonella Enteritidis through carboxylation of osteocalcin

VK, mg/kg SEa Based on defatted dry matter Based on total ash
Cab, % Cab, %
Week 42 Week 44 Week 42 Week 44
0 23.56 21.17 38.74 38.39
0 +   21.86   37.58
2 24.36 21.32 40.58 38.82
2 +   21.49   37.08
  SEMc 0.739 0.0259 1.021 0.763
0   21.51 37.98
2   21.41 37.74
  SEMc   0.190 0.549
  21.24 38.60
  + 21.68 37.08
  SEMc 0.190 0.549
  VK 0.472 0.693 0.225 0.688
P-values4 SE 0.114 0.055
  VE × SE 0.347 0.346
  1. aSE Salmonella Enteritidis; −, without SE challenge; +, with SE challenge
  2. bCa Calcium
  3. cSEM Pooled standard error of the mean
  4. 4P-values for main effect of VK, the main effect of SE challenge, and the interaction between the VK treatments and SE challenge