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. 2020 Apr 8;99(6):2944–2954. doi: 10.1016/j.psj.2020.03.008

Table 4.

Effects of essential oils supplementation on hematological parameters, phagocytic assay, and organ indices in broiler chickens at the 28th D ±SE.1

Items Groups2
NC VC VTC
Hematology and phagocytic assay
Phagocytic activity (PA) 48.00 ± 0.58a 32.67 ± 0.33c 37.50 ± 0.50b
Phagocytic index (PI) 28.00 ± 0.58a 10.00 ± 0.58c 13.50 ± 0.50b
H:L ratio 1.06 ± 0.02b 1.45 ± 0.01a 1.10 ± 0.03b
WBCs ( × 106/mm3) 2.24 ± 0.01b 2.54 ± 0.04a 2.23 ± 0.11b
RBCs ( × 106/mm3) 4.26 ± 0.02 4.61 ± 0.06 4.96 ± 0.07
PCV (%) 44.70 ± 0.05 41.06 ± 0.30 43.01 ± 0.22
Hb (g/dl) 14.55 ± 0.02 14.08 ± 0.04 14.96 ± 0.22
Organ index
Bursa of Fabricius 0.54 ± 0.08b 0.74 ± 0.09a,b 1.08 ± 0.32a
Thymus 3.67 ± 0.58 4.48 ± 0.28 3.51 ± 0.37
Spleen 0.70 ± 0.01 0.90 ± 0.10 0.95 ± 0.19
Liver 27.14 ± 2.49 23.81 ± 0.75 24.57 ± 1.41

Abbreviations: Hb, hemoglobin; H:L, heterophils-to-lymphocytes ratio; NC, negative control; PCV, packed cell volume; RBC, red blood cell; SE, standard error; VC, vaccinated and nontreated with EOs; VTC, vaccinated and treated with EOsWBC, white blood cell.

1

Data are the average of 6 birds per group (two birds/replicate). Different superscript letters in the same row indicate significant differences (P < 0.05). 2Experimental groups.

2

Experimental groups.