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Anim Biosci > Accepted Articles
https://doi.org/10.5713/ab.21.0331    [Accepted] Published online January 4, 2022.
Quercetin extracted from Sophora japonica flower improves growth performance, nutrient digestibility, cecal microbiota, organ indexes, and breast quality in broiler chicks
De Xin Dang1  , Huan Wang1,2  , Woo Jeong Seok1, Jung Heun Ha3,4, In Ho Kim1,* 
1Department of Animal Resource & Science, Dankook University, Cheonan 31116, Korea
2School of Biology and Food Engineering, Chuzhou University, Chuzhou, 239000, China
3Department of Food Science and Nutrition, Dankook University, Cheonan 31116, Korea
4Research Center for Industrialization of Natural Neutralization, Dankook University, Cheonan 31116, Korea
Correspondence:  In Ho Kim, Tel: +82-41-550-3652, Fax: +82-41-553-1618, Email: inhokim@dankook.ac.kr
Received: 23 July 2021   • Revised: 27 September 2021   • Accepted: 29 November 2021
The objective of this study was to evaluate the effects of supplementing quercetin extracted from Sophora japonica flower (QS) to the diet of broiler chicks on their growth performance, apparent nutrient digestibility, cecal microbiota, serum lipid profiles, relative organ weight, and breast muscle quality.
A total of 1088 1-day-old broiler chicks (mixed sex) were randomly assigned to four groups based on the initial body weight (43.00 ± 0.29 g). The experimental period was 35 days (starter, days 0-7; grower, days 7-21; finisher, days 21-35). There were 17 replicate cages per treatment and 16 birds per cage. Dietary treatments consisted of birds receiving basal diet without quercetin as the control group and treatment groups consisted of birds fed basal diet supplemented with 0.2, 0.4, or 0.6 g/kg QS.
With the increase of the QS dosage, body weight gain during days 0-7 (P = 0.021), 7-21 (P = 0.010), and 1-35 (P = 0.045), feed intake during days 0-7 (P = 0.037) and 1-35 (P = 0.025), apparent dry matter digestibility (P = 0.008), apparent energy retention (P = 0.004), cecal lactic acid bacteria counts (P = 0.023), the relative weight of breast muscle (P = 0.014), pH value from breast muscle (P < 0.001), and the water holding capacity of breast muscle (P = 0.012) increased linearly, whereas the drip loss from breast muscle (P = 0.001) decreased linearly.


The addition of QS in the diet of broiler chicks had positive effects on the breast muscle yield and breast muscle quality, and improved the dry matter digestibility and energy retention by increasing cecal beneficial bacteria counts, thus improving growth performance.
Keywords: Broiler Chick; Meat Quality; Nutrient Digestibility; Quercetin; Sophora japonica

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