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Effects of soybean isoflavone on growth performance, meat quality, and antioxidation in male broilers

机译：大豆异黄酮对雄性肉鸡生长性能，肉品质和抗氧化的影响

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摘要

To investigate the effects of a synthetic soybean isoflavone (ISF) on growth performance, meat quality, and antioxidation in male broilers, 1,500 birds that were 42 d old were allotted to 5 treatments with 6 replicates per treatment (50 birds per replicate). Birds were fed diets supplemented with 0, 10, 20, 40, or 80 mg of ISF/kg, respectively, for a period of 3 wk ad libitum. The results showed that dietary supplementations with 10 or 20 mg of ISF/kg increased weight gain by 13.6 and 16.2% (P < 0.01) and elevated feed intake by 7.37% (P < 0.05) and 11.2% (P < 0.01), respectively. Addition of 10 mg of ISF/kg decreased feed:gain by 5.5% (P < 0.05). Supplementation with 40 mg of ISF/kg in the diet slightly increased water-holding capacity by 17.24% (P < 0.1), and the addition of 20 or 40 mg/kg of ISF significantly increased the pH value of meat (P < 0.01), although adding 40 or 80 mg of ISF/kg increased the lightness of meat color (P < 0.05). Malondialdehyde production was slightly reduced in plasma of 20 mg of ISF/kg supplemented chickens (P < 0.1) and significantly decreased in breast muscles of 20, 40, or 80 mg of ISF/kg supplemented chickens (P < 0.01). The addition of 40 or 80 mg of ISF/kg significantly increased total antioxidant capability (P < 0.01) and slightly elevated total superoxide dismutase activity (P < 0.1) in plasma of chickens. The dose of 80 mg of ISF/kg slightly improved catalase activity in plasma (P < 0.06). In breast muscle, treatment of birds with 40 or 80 mg of ISF/kg caused an increase of total superoxide dismutase activity by 25.36% (P < 0.05) or 63.93% (P < 0.01). Catalase activity significantly increased by 70.61% by the supplemental ISF at the 40-mg level (P < 0.05). Also, 10, 20, or 40 mg doses of ISF/kg decreased lactic acid production (P < 0.05). The results of this study indicate that dietary ISF could improve growth performance and meat quality by decreasing lipid peroxidation and improving antioxidative status in male broilers.
机译：为了研究合成大豆异黄酮（ISF）对雄性肉鸡生长性能，肉品质和抗氧化的影响，将1,500只42天大的鸡分配给5种处理，每处理6个重复（每个重复50个鸡）。分别给鸟类喂食分别补充0、10、20、40或80毫克ISF / kg的饲料，随意3周。结果表明，添加10或20 mg ISF / kg的膳食补充剂可使体重增加分别增加13.6％和16.2％（P <0.01），并使采食量增加7.37％（P <0.05）和11.2％（P <0.01）。 。添加10 mg ISF / kg可使饲料增重降低5.5％（P <0.05）。在日粮中添加40 mg ISF / kg可使持水量略增17.24％（P <0.1），而添加20或40 mg / kg ISF则显着提高肉的pH值（P <0.01） ，尽管添加40或80 mg ISF / kg可以增加肉色的亮度（P <0.05）。补充20 mg ISF / kg鸡的血浆中丙二醛的产量略有降低（P <0.1），而补充20，40或80 mg ISF / kg鸡的胸肌中丙二醛的产量则明显降低（P <0.01）。添加40或80 mg ISF / kg可以显着提高鸡血浆中的总抗氧化能力（P <0.01），并稍微提高总超氧化物歧化酶活性（P <0.1）。 80 mg ISF / kg的剂量可稍微改善血浆中的过氧化氢酶活性（P <0.06）。在胸肌中，用40或80 mg ISF / kg的禽类进行处理可使总超氧化物歧化酶活性增加25.36％（P <0.05）或63.93％（P <0.01）。补充ISF在40 mg水平下过氧化氢酶活性显着增加70.61％（P <0.05）。同样，每公斤10、20或40毫克ISF / kg会降低乳酸的产生（P <0.05）。这项研究的结果表明，膳食ISF可以通过减少雄性肉鸡的脂质过氧化作用和改善其抗氧化状态来改善生长性能和肉质。

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