Table 3.
Evaluation of body weight (BW), body weight gain (BWG), feed intake (FI), and feed conversion ratio (FCR) in broiler chickens consuming a diet supplemented with 37-ppm Lippia origanoides essential oils on a necrotic enteritis challenge model *.
| Item | Negative Control | Positive Control * | Lippia origanoides * | Pooled SEM | p-Value |
|---|---|---|---|---|---|
| BW, g/broiler | |||||
| d 0 | 42.44 | 41.55 | 42.12 | 6.10 | 0.1341 |
| d 7 | 160.12 a | 137.44 b | 146.80 ab | 26.45 | 0.0002 |
| d 14 | 455.10 a | 416.89 b | 440.03 ab | 50.33 | 0.0001 |
| d 18 | 696.89 ab | 660.48 b | 687.12 ab | 31.81 | 0.0622 |
| d 25 | 1181.16 a | 818.23 c | 851.03 b | 75.10 | 0.0001 |
| BWG, g/broiler | |||||
| d 0–7 | 118.93 a | 97.46 b | 105.77 ab | 41.36 | 0.0002 |
| d 8–25 | 1050.12 a | 653.45 b | 639.07 b | 99.24 | 0.0001 |
| d 0–25 | 1143.09 a | 756.62 c | 810.44 b | 89.76 | 0.0002 |
| FI, g/broiler | |||||
| d 0–7 | 142.91 | 132.93 | 131.41 | 12.65 | 0.1256 |
| d 8–25 | 1180.75 a | 983.39 b | 901.94 c | 59.48 | 0.0001 |
| d 0–25 | 1537.38 a | 1295.70 c | 1373.92 b | 116.45 | 0.0002 |
| FCR | |||||
| d 0–7 | 0.91 | 0.94 | 0.89 | 0.88 | 0.1756 |
| d 8–25 | 1.14 c | 1.36 b | 1.26 ab | 0.79 | 0.0002 |
| d 0–25 | 1.36 c | 1.67 b | 1.75 ab | 0.81 | 0.0001 |
* Day-old broilers were challenged with Salmonella typhimurium (day 1), E. maxima (day 18), and Clostridium perfringens (days 22 and 23). a,b,c Non-matching superscripts within rows indicates significant difference at p < 0.05.