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All Journal Buletin Peternakan JURNAL ILMU DAN TEKNOLOGI PETERNAKAN Journal of the Indonesian Tropical Animal Agriculture Tropical Animal Science Journal Jurnal Pengembangan Penyuluhan Pertanian Journal of Smart Agriculture and Environmental Technology
V. D. Yunianto
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Earth & Planetary Sciences Energy Environmental Science Veterinary Other

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Intestinal Morphology, Protein Digestibility, and Broiler Performance Fed Encapsulated Dahlia Tuber Extract and Bacillus subtilis Anjani, L.; Yunianto, V. D.; Suthama, N.; Krismiyanto, L.
Tropical Animal Science Journal Vol. 48 No. 4 (2025): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2025.48.4.338

Abstract

This study aimed to evaluate the effects of encapsulated dahlia tuber extract and Bacillus subtilis (EdteBs) on intestinal morphology, protein digestibility, and broiler performance. A total of 200 eight-day-old Ross 308 broilers (initial body weight: 194.60 ± 3.46 g) were divided into four dietary treatments with five replications. The treatments were: T0 – basal diet (control) without EdteBs supplementation; T1 – T0 + 0.1% EdteBs; T2 – T0 + 0.2% EdteBs; and T3 – T0 + 0.3% EdteBs. Variables measured included potential hydrogen (pH), lactic acid bacteria (LAB) population, coliform count, villus height, crypt depth, intestinal segment weight and height, protein digestibility, feed intake, body weight gain (BWG), feed conversion ratio (FCR), and income over feed cost (IOFC). Data were analyzed using analysis of variance, followed by Duncan’s test at a 5% significance level (p<0.05). Results showed that EdteBs supplementation at higher levels (T2 and T3) significantly (p<0.05) increased LAB population, villus height, crypt depth, and intestinal segment weight and height, while pH and coliform counts decreased. Protein digestibility and BWG also significantly improved (p<0.05) in T2 and T3. Both feed intake and BWG increased, particularly in T3, contributing to lower FCR and higher IOFC. In conclusion, EdteBs supplementation enhances intestinal morphology, protein digestibility, and broiler performance, with the most effective level at 0.3%.
Co-Authors . Mirnawati . Tristiarti A. Malik Alamsyah, S. Anjani, L. B. Sukamto E. Pangestu E. Suprijatna, E. E. Supriyatna H. Has I, Marhaeni I. Mangisah L. D. Mahfudz Lilik Krismiyanto M. Mulyono N. Suthama S. Hasanuddin S. Kismiati S. Sugiharto S. Sumarsih Srimawati (Srimawati) Surahmanto T. B. Iskandar Moeda U. Atmomarsono Widiyanto (Widiyanto) Y. Sukrayana