Feeding dry stevia leaf (Stevia rebaudiana) or xylanase improves the hepatic antioxidative status of broiler chickens

Pirgozliev, V., Kljak, K., Whiting, I.M., Rose, S.P., Mansbridge, S.C., Enchev, S., Atanasov, A. and Stringhini, J.H. (2021) Feeding dry stevia leaf (Stevia rebaudiana) or xylanase improves the hepatic antioxidative status of broiler chickens. Research in Veterinary Science, 136.

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Abstract

Four diets, formulated with and without stevia and with and without exogenous xylanase, following a 2 × 2 factorial design, were prepared. Each diet was fed ad libitum to birds in eight pens (three birds in each pen) in a randomised block design. It was found that birds fed xylanase grew faster, used the feed more efficiently and had an increased concentration of hepatic α-tocopherol and vitamin E concentrations (P < 0.05). Feeding stevia did not affect growth performance (P > 0.05), but increased hepatic CoQ10 (P = 0.05), lutein, zeaxanthin and total carotenoids (P < 0.001) concentrations. There were no dietary stevia by xylanase interactions (P > 0.05) for any of the studied variables. The results showed that alone, dietary stevia and dietary xylanase can improve the antioxidative status of birds through enhancing dietary antioxidant availability.

Item Type: Article
Keywords: Stevia, Xylanase, Chickens, Hepatic antioxidants
Divisions: Agriculture and Environment (from 1.08.20)
Depositing User: Mrs Rachael Harper
Date Deposited: 08 Apr 2021 08:45
Last Modified: 22 Jul 2021 11:30
URI: https://hau.repository.guildhe.ac.uk/id/eprint/17666

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