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Effects of selenium source and level on growth performance, antioxidative ability and meat quality of broilers
Journal of Integrative Agriculture ( IF 4.6 ) Pub Date : 2020-12-11 , DOI: 10.1016/s2095-3119(20)63432-3
Chuan-long WANG , Guan-zhong XING , Li-sai WANG , Su-fen LI , Li-yang ZHANG , Lin LU , Xu-gang LUO , Xiu-dong LIAO

This experiment was conducted to investigate the effects of selenium (Se) source and level on growth performance, carcass traits, antioxidative ability and meat quality of broilers. A total of 320 one-d-old Arbor Acres commercial broilers were randomly assigned to 1 of 5 treatments with 8 replicates in a completely randomized design involving a 2×2 factorial arrangement of treatments plus one Se-unsupplemented basal diet control for 42 d. The two Se sources were sodium selenite and Se yeast, and the two supplemental Se levels were 0.20 and 0.40 mg Se kg–1. The results showed that broilers fed the Se-supplemented diets had higher (P<0.05) average daily gain and average daily feed intake from 22 to 42 d of age, eviscerated yield and abdominal fat percentages, Se concentrations and glutathione peroxidase (GSH-Px) activities in breast and thigh muscles on d 42, and lower (P<0.05) feed/gain from 1 to 21 and 22 to 42 d of age, mortality from 22 to 42 d of age and malondialdehyde (MDA) concentration in thigh muscle on d 42 than those fed the control diet. Broilers fed the diets supplemented with Se yeast had higher (P<0.05) pH value and lower (P<0.05) shear force in thigh muscle than those fed the diets supplemented with sodium selenite. Additionally, broilers fed the diets supplemented with 0.40 mg Se kg–1 had lower (P<0.05) shear force in thigh muscle and higher (P<0.05) GSH-Px activities in breast and thigh muscles than those fed the diets supplemented with 0.20 mg Se kg–1. Furthermore, broilers fed the diet supplemented with Se yeast at 0.40 mg Se kg–1 had higher (P<0.05) Se concentrations in breast and thigh muscles than those fed the diet supplemented with Se yeast at 0.20 mg Se kg–1, but no differences (P<0.05) were observed in these indices of broilers fed the diets supplemented with sodium selenite between 0.20 and 0.40 mg Se kg–1. The results from the present study indicated that supplemental Se could increase the growth performance, muscle Se concentration and antioxidative ability of broilers; and the Se from Se yeast was more effective than the Se from sodium selenite in improving meat quality of broilers.



中文翻译:

硒源和硒水平对肉仔鸡生长性能,抗氧化能力和肉品质的影响

进行该实验以研究硒源和硒水平对肉鸡生长性能,体性状,抗氧化能力和肉品质的影响。在完全随机的设计中,将总共320头一岁的Arbor Acres商业肉鸡随机分配到5种处理中的1种,重复8次,涉及2×2因子处理安排和42天的1种Se不补充基础饮食控制。硒的两个来源是亚硒酸钠和硒酵母,两个补充硒的水平分别为0.20和0.40 mg Se kg –1。结果表明,饲喂含硒饮食的肉鸡在22至42 d的日平均增重和日平均采食量较高(P <0.05),去内脏脂肪和腹脂百分比,硒浓度和谷胱甘肽过氧化物酶(GSH-Px)较高)在第42天时乳房和大腿肌肉的活动以及1至21日和22至42天年龄的较低进食/增重(P <0.05),22至42天年龄的死亡率和大腿肌肉中的丙二醛(MDA)浓度在第42天比喂饲对照饮食的人多。饲喂添加硒酵母的肉鸡与饲喂亚硒酸钠的肉鸡相比,在大腿肌肉中具有较高的(P <0.05)pH值和较低的剪切力(P <0.05)。此外,肉鸡饲喂补充了0.40毫克硒千克–1的饲料与补充0.20 mg Se kg –1的日粮相比,大腿肌肉的剪切力较低(P <0.05),乳腺和大腿肌肉的GSH-Px活性较高(P <0.05)。此外,饲喂添加了0.40 mg Se kg –1的硒酵母的肉鸡比饲喂添加了0.20 mg Se kg –1的硒酵母的肉鸡的胸和大腿中的硒浓度更高(P <0.05),但没有在添加硒酸钠的日粮中添加0.20至0.40 mg Se kg –1的肉鸡的这些指数之间存在差异(P <0.05)。本研究结果表明,补充硒可以提高肉鸡的生长性能,肌肉硒浓度和抗氧化能力。硒酵母中的硒比亚硒酸钠中的硒在改善肉鸡肉质方面更有效。

更新日期:2020-12-13
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