Open Access
Research (Published online: 01-06-2021)
1. Effect of dietary tannins on the performance, lymphoid organ weight, and amino acid ileal digestibility of broiler chickens: A meta-analysis
Cecep Hidayat, Agung Irawan, Anuraga Jayanegara, Muhammad Miftakhus Sholikin, Tri Rachmanto Prihambodo, Yulianri Rizki Yanza, Elizabeth Wina, Sadarman Sadarman, Rantan Krisnan and Isbandi Isbandi
Veterinary World, 14(6): 1405-1411

Cecep Hidayat: Indonesian Research Institute For Animal Production, Ciawi Bogor 16720, Indonesia; Animal Feed and Nutrition Modelling Research Group, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia.
Agung Irawan: Animal Feed and Nutrition Modelling Research Group, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia; Vocational School, Universitas Sebelas Maret, Surakarta 57126, Indonesia.
Anuraga Jayanegara: Animal Feed and Nutrition Modelling Research Group, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia; Department of Nutrition and Feed Technology, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia.
Muhammad Miftakhus Sholikin: Animal Feed and Nutrition Modelling Research Group, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia; Graduate Study Program of Nutrition and Feed Science, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia.
Tri Rachmanto Prihambodo: Animal Feed and Nutrition Modelling Research Group, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia; Graduate Study Program of Nutrition and Feed Science, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia.
Yulianri Rizki Yanza: Animal Feed and Nutrition Modelling Research Group, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia; Department of Animal Nutrition, Faculty of Veterinary Medicine and Animal Science, Poznan University of Life Sciences, Poznan 60-637, Poland.
Elizabeth Wina: Indonesian Research Institute For Animal Production, Ciawi Bogor 16720, Indonesia.
Sadarman Sadarman: Animal Feed and Nutrition Modelling Research Group, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia; Department of Animal Science, Sultan Syarif Kasim State Islamic University, Pekanbaru 28293, Indonesia; Center for Livestock Studies and Development, Pahlawan Tuanku Tambusai University, Bangkinang 28412, Indonesia.
Rantan Krisnan: Indonesian Research Institute For Animal Production, Ciawi Bogor 16720, Indonesia; Animal Feed and Nutrition Modelling Research Group, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia.
Isbandi Isbandi: Indonesian Research Institute For Animal Production, Ciawi Bogor 16720, Indonesia.

doi: www.doi.org/10.14202/vetworld.2021.1405-1411

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Article history: Received: 24-01-2021, Accepted: 15-04-2021, Published online: 01-06-2021

Corresponding author: Cecep Hidayat

E-mail: hidayat_c2p@yahoo.com

Citation: 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.
Abstract

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.