破壁处理超细绿茶粉对肉鸡肉品品质和重金属残留的影响

Effects of Wall-breaking Technology of Green Tea on Meat Quality and the Residual of Heavy Metal of Broilers

试验选用1日龄AA肉用仔鸡480羽,随机分为5组,每组设8个重复,每个重复12羽。第1组为对照组,第2～5组分别在基础日粮中添加100、200、400、800mg/kg破壁处理超细绿茶粉,即使日粮中的茶多酚含量分别约为0、10、20、40、80mg/kg,研究其对肉鸡肉品品质和重金属残留的影响。结果表明:(1)随着超细绿茶粉的增加,肌肉pH值逐渐增加,滴水损失逐渐降低(P>0.05)。各试验组肌肉MDA含量分别降低了5.88%、5.88%、0.59%、11.76%(P>0.05);各试验组肌肉组织中VE的沉积量分别增加了63.01%、0.34%、95.54%、3.08%;3、4、5组,肝脏组织维生素E沉积量分别提高了3.37%、55.03%、44.53%。(2)破壁处理超细绿茶粉有降低铅和镉在肝脏中的残留(P>0.05),但对铅和镉在肌肉的残留无影响。

Four hundred and eighty 1-day-old Arbor Acres chicks were randomly assigned to 5 treatment groups consisting of 8 replicates of 12 birds to study the effects of wall-breaking technology of green tea on meat quality and the residual of heavy metal of broiler. The birds were fed with basal diet supplemented with 0 （control group）, 100, 200, 400 and 800 mg/kg wall-breaking green tea （0, 10, 20. 40, 80 mg/kg tea polyphenols）. Result showed： （1） The supplement of wall-breaking technology of green tea in diet increased the pH value of breast, decreased dripping loss content of breast（P〉0.05）, the MDA content of breast decreased by 5.88%, 5.88%, 0.59%, 11.76%（P〉0.05）, respectively. The vitamin E content of breast increased by 63.01%, 0.34%, 95.54%, 3.08%, the vitamin E content of liver increased by 3.37%, 55.03%. 44.53% at 20, 40, 80 mg/kg treatments（P〉0.05）. （2） The broilers fed with wall-breaking green tea reduced the residual of lead and cadmium in liver of broilers, but all treatments had no significant effect on lead and cadmium content of broiler breast.