ABSTRACT The aim of this study was to determine the effect of a polyphenol product (PP) (Proviox) and vitamin E on the antioxidant status and meat quality of broiler chickens fed diets contaminated with ochratoxin A (OTA). One hundred and twenty ROSS 308 broiler chickens were randomly divided into six groups (10 replications, 2 birds per replication). Group I received an uncontaminated and unsupplemented diet, diets of groups II to VI were contaminated with OTA at 172 µg and 200 µg/kg for the starter and grower period, respectively. Furthermore, diets of groups III, IV and V were supplemented with vitamin E at 100, 200 and 100 mg, respectively, and to diets of groups V and VI additionally 100 and 2200 mg PP was added, respectively. Supplementation with PP and vitamin E had no significant effects on the growth performance, dressing percentage or carcass trait parameters of broiler chickens. In chickens exposed to stress, dietary supplementation with vitamin E and/or PP improved the total antioxidant status (p ≤ 0.05), enhanced the blood activity of antioxidant enzymes (p ≤ 0.01) and increased the concentrations of non-enzymatic antioxidants (p ≤ 0.01) in the liver and breast muscles. Regardless of the administered antioxidants, chickens fed diets contaminated with OTA were characterised by lower dressing percentage (p ≤ 0.01), a higher proportion of the liver in the carcass (p ≤ 0.01), lower carcass fat content (p ≤ 0.01), and longer small intestines (p ≤ 0.01) and caeca (p ≤ 0.01). Dietary supplementation with PP improved the water-holding capacity of meat (p ≤ 0.01). The breast muscles of chickens fed diets supplemented with PP and vitamin E were characterised by higher (p ≤ 0.05) concentrations of eicosapentaenoic acid (C20:5). It was concluded that PP can be an insufficient component of diets for broiler chickens to improve growth performance and mitigate the negative effects of high dose of OTA in diets.

中文翻译：

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多酚和维生素 E 对饲喂赭曲霉毒素 A 自然污染日粮的肉鸡抗氧化状态和肉质的影响

摘要 本研究的目的是确定多酚产品 (PP) (Proviox) 和维生素 E 对饲喂赭曲霉毒素 A (OTA) 污染日粮的肉鸡的抗氧化状态和肉质的影响。120只ROSS 308肉鸡随机分为6组（10个重复，每个重复2只）。第 I 组接受未受污染和未补充的饮食，第 II 组至第 VI 组的饮食在开始和生长期间分别被 OTA 污染，浓度为 172 µg 和 200 µg/kg。此外，组 III、IV 和 V 的饮食分别添加了 100、200 和 100 毫克的维生素 E，并且分别向组 V 和 VI 的饮食中添加了 100 和 2200 毫克的 PP。补充PP和维生素E对生长性能无显着影响，肉鸡的屠宰率或胴体性状参数。在暴露于压力的鸡中，日粮补充维生素 E 和/或 PP 改善了总抗氧化状态（p ≤ 0.05），增强了抗氧化酶的血液活性（p ≤ 0.01）并增加了非酶抗氧化剂的浓度（p ≤ 0.01) 在肝脏和乳房肌肉中。无论使用何种抗氧化剂，饲喂受 OTA 污染日粮的鸡的特征是屠宰率较低 (p ≤ 0.01)、胴体肝脏比例较高 (p ≤ 0.01)、胴体脂肪含量较低 (p ≤ 0.01) 和更长的小肠 (p ≤ 0.01) 和盲肠 (p ≤ 0.01)。膳食补充剂 PP 提高了肉类的持水能力（p ≤ 0.01）。饲喂添加了 PP 和维生素 E 的日粮的鸡胸肌的特征是较高 (p ≤ 0.05) 浓度的二十碳五烯酸 (C20:5)。结论是，PP 可能不足以作为肉鸡日粮中改善生长性能和减轻日粮中高剂量 OTA 的负面影响的成分。