<i>Achyranthes Japonica </i>Nakai root extract supplementation improves apparent nutrient digestibility, caecum microbiota, and excreta gas emission in broiler chicks

This study investigated the effects of supplementing Achyranthes Japonica Nakai (AJN) root extract to diet broiler chicks on growth performance, nutrient digestibility, caecum microbiota, excreta gas emission, and relative weight organs. A total 270 one-day-old Ross 308 (42.11 ± 0.18 g) were randomly allotted into three dietary treatments according initial body weight. Each treatment had five replicate cages with 18 birds per cage. The experimental period was 35 d (starter, days 1–7; grower, 8–21; finisher, 22–35). Dietary a corn–soybean meal-based basal supplemented 0.000%, 0.015%, or 0.030% AJN extract. apparent tract digestibility nitrogen (P = 0.025) increased linearly increase dosage extract, while counts Escherichia coli in 0.038) ammonia emission 0.003) decreased linearly. However, performance &gt; 0.05) organs did not differ among groups. In conclusion, could reduce noxious by reducing harmful microbiota dose-dependent manner.