Vet World Vol.14 June-2021 Article-1
Research Article
Veterinary World, 14(6): 1405-1411
https://doi.org/10.14202/vetworld.2021.1405-1411
Effect of dietary tannins on the performance, lymphoid organ weight, and amino acid ileal digestibility of broiler chickens: A meta-analysis
2. Animal Feed and Nutrition Modelling Research Group, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia.
3. Vocational School, Universitas Sebelas Maret, Surakarta 57126, Indonesia.
4. Department of Nutrition and Feed Technology, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia.
5. Graduate Study Program of Nutrition and Feed Science, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia.
6. Department of Animal Nutrition, Faculty of Veterinary Medicine and Animal Science, Poznan University of Life Sciences, Poznan 60-637, Poland.
7. Department of Animal Science, Sultan Syarif Kasim State Islamic University, Pekanbaru 28293, Indonesia.
8. Center for Livestock Studies and Development, Pahlawan Tuanku Tambusai University, Bangkinang 28412, Indonesia.
Background and Aim: Tannins are functional secondary metabolites that may provide benefits to ruminants. However, to date, their effects on broiler chickens remain inconclusive. This study aimed to evaluate the effectiveness of dietary tannin levels on the performance, body organs, and amino acid (AA) digestibility of broiler chickens using a meta-analysis.
Materials and Methods: After verification and evaluation, a total of 22 articles were included in the present study. All data regarding dietary tannin dosages, performance, digestibility, and gastrointestinal physiology of broiler chickens were tabulated into a database. The database data were then statistically analyzed using mixed models, with tannin dose as a fixed effect and study as a random effect.
Results: High levels of dietary tannins negatively affected the average daily gain and average daily feed intake of broiler chickens according to linear patterns (p<0.001). In addition, dietary tannins decreased drumstick and liver weights, as well as bursa of Fabricius and spleen weight (p<0.05). Meanwhile, other carcass traits (i.e., thigh, wings, and body fat) were not influenced by dietary tannins. Regarding AA digestibility, high dietary tannin concentrations induced negative responses on isoleucine, leucine, and methionine digestibility (p<0.05).
Conclusion: Dietary tannins appear to have a negative effect on broiler performance, lymphoid organ weight, and AA ileal digestibility. Hence, the addition of tannins to broiler diets is not recommended. Keywords: amino acid ileal digestibility, broiler chicken, meta-analysis, tannin.
Keywords: amino acid ileal digestibility, broiler chicken, meta-analysis, tannin.
How to cite this article: Hidayat C, Irawan A, Jayanegara A, Sholikin MM, Prihambodo TR, Yanza YR, Wina E, Sadarman S, Krisnan R, Isbandi I (2021) Effect of dietary tannins on the performance, lymphoid organ weight, and amino acid ileal digestibility of broiler chickens: A meta-analysis. Veterinary World, 14(6): 1405-1411.
Received: 24-01-2021 Accepted: 15-04-2021 Published online: 01-06-2021
Corresponding author: Cecep Hidayat E-mail: hidayat_c2p@yahoo.com
DOI: 10.14202/vetworld.2021.1405-1411
Copyright: Hidayat, et al. This article is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http:// creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.