Effect of feeding different sources of selenium on growth performance and antioxidant status of broilers

Woods, S.L., Sobolewska, S., Rose, S.P., Whiting, I.M., Blanchard, A., Ionescu, C., Bravo, D. and Pirgozliev, V. (2020) Effect of feeding different sources of selenium on growth performance and antioxidant status of broilers. British Poultry Science. pp. 1-7.

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This study was conducted to determine the effect of different sources of selenium (Se) on breast and liver tissue deposition, apparent metabolisable energy (AME), growth performance and antioxidant status of broilers, measured as Se content in liver and breast tissues and glutathione peroxidase (GSH-Px) in blood, when used in 0–35 d broiler chicken diets. 2. A total of 200 male Ross 308 broilers were used in the feeding trial, which comprised two dietary phases, a starter from 0 to 21 d and finisher from 21 to 35 d of age. Four treatments with 10 replications each were used. A control diet (C) was formulated that was sufficient in protein and energy (230 and 215 g/kg of crude protein and 12.67 and 13.11 MJ/kg of metabolisable energy, respectively), for both phases, but contained background Se only from the feed ingredients. The first treatment diet (IS) was made from the C diet supplemented with 10.35 g/t inorganic source of elemental Se in both feed phases. The third treatment (SY) was the control diet supplemented with 136.36 g/t selenised yeast (Sacchromyces cerevisiae) in both feed phases. A fourth treatment (SS) was the C diet supplemented with 0.666 g/t sodium selenite an inorganic source of Se in both starter and finisher diets. 3. Birds fed the SY diet consumed less and weighed less than those fed IS or C (P < 0.05; 0–35 d of age), but there was no difference compared to birds fed SS diets. There were no differences in FCR or dietary AME between broilers fed different Se sources. All diets containing supplementary Se increased concentrations in the liver and breast muscle, and for GSH-Px levels in blood compared to birds fed the C diet (P < 0.001). Birds fed SY diets had greater Se levels in liver and breast tissues compared to birds fed any of the other diets (P < 0.001). 4. Diets supplemented with Se had variable effects on broiler growth performances and antioxidant status. Feeding Se from a yeast source has higher transfer into breast tissues. Feeding different sources and levels of Se to birds in a more challenging situation to induce oxidative stress may bring more conclusive results.

Item Type: Article
Keywords: Chickens, selenium, feed intake, weight gain, antioxidant status
Divisions: Animal Production, Welfare and Veterinary Sciences
Depositing User: Ms Kath Osborn
Date Deposited: 17 Feb 2020 11:16
Last Modified: 17 Feb 2020 11:16
URI: https://hau.repository.guildhe.ac.uk/id/eprint/17514

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