Table 2 Effect of dietary Lactobacillus, medicinal plants extract, herb extract on laying performance in laying hens against Salmonella gallinarum (n=20)

Challenge Egg production (%) Egg weight (g) Egg mass (g/d) Feed intake (g) FCR
Treatments NC × 63.8 65.5 41.8 102.8 2.46
61.7 65.3 40.3 97.8 2.43
PC × 65.4 64.7 42.3 105.4 2.49
64.2 64.5 41.4 102.5 2.48
LB × 62.7 65.1 40.8 103.5 2.54
63.0 65.8 41.5 98.5 2.38
MPE × 66.4 64.8 43.0 107.8 2.51
62.1 65.1 40.4 96.8 2.39
EO × 63.8 65.6 41.9 108.7 2.60
60.4 65.3 39.4 101.6 2.58
SEM 0.56 0.13 0.54 1.28 0.02
Challenge Without Salmonella 64.4 65.1 42.0 105.6 2.52
With Salmonella 62.3 65.2 40.6 99.4 2.45
Feed NC 62.8 65.4 41.0 100.3 2.44
PC 64.8 64.6 41.9 103.9 2.48
LB 62.9 65.5 41.1 101.0 2.46
MPE 64.3 65.0 41.7 102.3 2.45
EO 62.1 65.4 40.6 105.2 2.59
Challenge NS NS NS NS NS
Feed NS NS NS NS NS
Challenge × feed NS NS NS NS NS
NC, basal diet; PC, basal diet with virginiamycin 10 ppm + salinomycin 60 ppm; LB, Lactobacillus 0.1%; MPE, medicinal plants extract 100 ppm; EO, essential oil 100 ppm.NS; no significant.