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Table 2 Effect of dietary vitamin K (VK) supplementation and Salmonella Enteritidis (SE) challenge on laying performance of laying hens (n = 20)

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

VK, mg/kg SEc Laying rate, % Daily egg mass, g Egg weight, g Daily feed intake, g/d/bird Feed conversion, g/g Broken eggs, % Mortality, %
Week
32–42
Week
43–44
Week
32–42
Week
43–44
Week
32–42
Week
43–44
Week
32–42
Week
43–44
Week
32–42
Week
43–44
Week
32–42
Week
43–44
Week
32–42
Week
43–44
0 92.6 87.1 55.24 52.49 59.62 60.23 116.91 101.20 2.11 1.93 3.16 0.00 11.9 18.4
0 +   84.5   50.64   59.99   99.32   1.96   0.00   26.6
2 94.5 92.4 56.75 55.92 60.06 60.49 114.83 105.23 2.03 1.89 2.08 3.45 5.0 18.4
2 +   90.8   54.49   60.08   106.78   1.96   0.00   26.6
  SEMd 0.986 2.600 0.646 1.506 0.338 0.646 2.715 3.449 0.061 0.039 0.725 1.026 3.708 0.000
0   85.8b 51.56b 60.11 100.26 1.95 0.00 22.5
2   91.6a 55.21a 60.28 106.01 1.92 1.72 22.5
  SEMd 1.839 1.065 0.457 2.439 0.028 0.726 0.000
  89.8 54.21 60.36 103.21 1.91 1.72 18.4b
  + 87.6 52.57 60.03 103.06 1.96 0 26.6a
  SEMd 1.839 1.065 0.457 2.439 0.028 0.726 0.000
  VK 0.215 0.046 0.130 0.032 0.381 0.794 0.600 0.121 0.379 0.578 0.316 0.119 0.216
P-values3 SE 0.419 0.297 0.619 0.965 0.207 0.119 < 0.010
  VK × SE 0.846 0.890 0.901 0.627 0.578 0.119
  1. a, bMeans within a column with no common superscripts differ (P < 0.05)
  2. cSE Salmonella Enteritidis; –, without SE challenge; +, with SE challenge
  3. dSEM Pooled standard error of the mean
  4. 3P-values for main effect of VK, the main effect of SE challenge, and the interaction between the VK treatments and SE challenge