添加牛樟芝多糖和锌对麻黄肉鸡屠宰性能、肉品质及肌肉抗氧化能力的影响

Effects of Antrodia cinnamomea polysaccharide and zinc on slaughter performance, meat quality and muscle antioxidant capacity of Mahuang broilers

本研究旨在探究饲粮中添加牛樟芝多糖和锌对麻黄肉鸡生长性能、屠宰性能及肌肉品质、抗氧化能力的影响,为牛樟芝多糖和锌在肉鸡生产中的应用提供理论依据。选取35日龄健康的麻黄肉鸡公鸡180羽,随机分为如下3组:饲喂基础饲粮的对照、饲喂添加500 mg/kg牛樟芝多糖(ACP)的基础饲粮组(ACP处理)、饲喂添加500 mg/kg牛樟芝多糖+100 mg/kg锌的基础饲粮组(ACP+锌处理),每组设6个重复,每个重复设10羽鸡。试验期为28 d,其间记录鸡的生长性能相关指标;63日龄时,每个重复分别选取1~2羽鸡屠宰、采样,测定与屠宰性能、肉品质及肌肉抗氧化性能相关的指标。结果显示,与对照相比,ACP、ACP+锌处理胸肌在屠宰后45 min测量所得pH值(pH45 min值)显著升高(P<0.05),且滴水损失率显著降低(P<0.05)。与对照、ACP+锌处理相比,ACP处理胸肌的咀嚼性显著升高(P<0.05)。与对照相比,ACP、ACP+锌处理胸肌中的丙二醛含量均显著降低(P<0.05)。由结果看出,在饲料中单独添加牛樟芝多糖或联合添加牛樟芝多糖+锌均可以减少肉鸡胸肌的滴水损失,调节其pH值,提高肌肉品质和肉鸡胸肌的抗氧化能力。

The purpose of this study was to explore the effects of the addition of Antrodia cinnamomea polysaccharides and zinc in the diet on growth performance,slaughter performance,meat quality and antioxidant capacity of Mahuang broilers,and to provide theoretical and experimental basis for the application of Antrodia cinnamomea polysaccharides and zinc in broilers production.A total of 18035-day-old healthy Mahuang broilers were randomly divided into three groups:basal diet group(CK),the basal diet supplemented with 500 mg/kg Antrodia cinnamomea polysaccharides(ACP)group and the basal diet supplemented with 500 mg/kg Antrodia cinnamomea polysaccharides and 100 mg/kg zinc(ACP+Zn)group,with six replicates per group and 10 broilers per replicate.The experiment lasted for 28 days,and growth performance related indexes were recorded during the experiment.At 63 days of age,one to two chickens from each replicate group were slaughtered and sampled to determine indexes related to slaughter performance,meat quality and antioxidant activity.The results showed that compared with the control,pH45 min values of breast muscle in ACP and ACP+Zn treatments were significantly increased(P<0.05),and drip loss rate was significantly decreased(P<0.05).Compared with control and ACP+Zn treatment,the chewiness of breast muscle in ACP treatment was significantly increased(P<0.05).Compared with the control,malondialdehyde(MDA)content in breast muscle in ACP and ACP+Zn treatments was significantly decreased(P<0.05).The results indicated that dietary supplementation of Antrodia cinnamomea polysaccharides alone or combined supplementation of Antrodia cinnamomea polysaccharides and zinc could reduce the drip loss of breast muscle,regulate its pH,improve muscle quality and antioxidant capacity of broilers breast muscle.