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Green tea powder supplementation increased viscosity and decreased lysozyme activity of egg white during storage of eggs from Huainan partridge chicken
Italian Journal of Animal Science ( IF 2.2 ) Pub Date : 2020-06-12 , DOI: 10.1080/1828051x.2020.1769512
Junzhi Zhang 1 , Minghui Zhang 1 , Weiwei Liang 1 , Zhaoyu Geng 1, 2 , Xingyong Chen 1, 2
Affiliation  

Abstract The aim of this study was to evaluate whether green tea powder (GTP) addition could affect egg quality and egg storage. Eggs were collected after 12 weeks of feeding from control and GTP treatment groups of Huainan partridge hens. Egg quality, radical scavenging capacity, albumen viscosity, lysozyme content and activity were compared between the two groups during egg storage. Eggs from hens supplemented with GTP exhibited higher albumen height, albumen antioxidant capacity, albumen viscosity and haugh unit and lower shell thickness and shell strength when compared to control group (p < .05). During egg storage, eggs from GTP group showed lower decrease of albumen height, albumen antioxidant capacity, albumen viscosity and haugh unit. Eggs from GTP group showed a greater decrease of eggshell thickness and shell strength, increased air space diameter and lower lysozyme activity as compared to the control group during egg storage (p < .05). In conclusion, GTP addition in laying hens decreased eggshell thickness and increased water evaporation from egg white, lowered the activity of lysozyme from egg white. Therefore, eggs collected from Huainan partridge hens fed GTP have poor storage stability. Highlights Green tea powder (GTP) added in laying hens diet increased albumen height and haugh unit, and the hydroxyl radical scavenging activity of egg white. GTP added in laying hens diet decreased eggshell thickness and shell strength. Laying hens fed diet containing GTP increased air space diameter and lowered lysozyme activity during egg storage.

中文翻译:

淮南鹧鸪蛋贮藏期间添加绿茶粉增加蛋清黏度降低溶菌酶活性

摘要 本研究的目的是评估添加绿茶粉(GTP)是否会影响鸡蛋质量和鸡蛋储存。从淮南鹧鸪母鸡的对照组和GTP处理组饲养12周后收集鸡蛋。比较两组鸡蛋贮藏期间的鸡蛋品质、自由基清除能力、蛋白黏度、溶菌酶含量和活性。与对照组相比,添加 GTP 的母鸡的鸡蛋表现出更高的蛋白高度、蛋白抗氧化能力、蛋白粘度和哈夫单位,以及较低的壳厚度和壳强度 (p < .05)。在鸡蛋储存期间,GTP组鸡蛋的蛋白高度、蛋白抗氧化能力、蛋白粘度和哈夫单位的下降幅度较小。GTP组的鸡蛋蛋壳厚度和蛋壳强度下降幅度较大,在鸡蛋储存期间,与对照组相比,空气空间直径增加,溶菌酶活性降低(p < .05)。总之,蛋鸡中添加GTP会降低蛋壳厚度,增加蛋清水分蒸发,降低蛋清溶菌酶活性。因此,饲喂 GTP 的淮南鹧鸪母鸡采集的鸡蛋贮藏稳定性较差。亮点 蛋鸡日粮中添加绿茶粉 (GTP) 可增加蛋白高度和哈氏单位,以及蛋清的羟自由基清除活性。在蛋鸡日粮中添加 GTP 会降低蛋壳厚度和蛋壳强度。蛋鸡饲喂含有 GTP 的日粮增加了空气空间直径并降低了鸡蛋储存期间的溶菌酶活性。蛋鸡添加GTP降低蛋壳厚度,增加蛋清水分蒸发,降低蛋清溶菌酶活性。因此,饲喂 GTP 的淮南鹧鸪母鸡采集的鸡蛋贮藏稳定性较差。亮点 蛋鸡日粮中添加绿茶粉 (GTP) 可增加蛋白高度和哈氏单位,以及蛋清的羟自由基清除活性。在蛋鸡日粮中添加 GTP 会降低蛋壳厚度和蛋壳强度。蛋鸡饲喂含有 GTP 的日粮增加了空气空间直径并降低了鸡蛋储存期间的溶菌酶活性。蛋鸡添加GTP降低蛋壳厚度,增加蛋清水分蒸发,降低蛋清溶菌酶活性。因此,饲喂 GTP 的淮南鹧鸪母鸡采集的鸡蛋贮藏稳定性较差。亮点 蛋鸡日粮中添加绿茶粉 (GTP) 可增加蛋白高度和哈氏单位,以及蛋清的羟自由基清除活性。在蛋鸡日粮中添加 GTP 会降低蛋壳厚度和蛋壳强度。蛋鸡饲喂含有 GTP 的日粮增加了空气空间直径并降低了鸡蛋储存期间的溶菌酶活性。亮点 蛋鸡日粮中添加绿茶粉 (GTP) 可增加蛋白高度和哈氏单位,以及蛋清的羟自由基清除活性。在蛋鸡日粮中添加 GTP 会降低蛋壳厚度和蛋壳强度。蛋鸡饲喂含有 GTP 的日粮增加了空气空间直径并降低了鸡蛋储存期间的溶菌酶活性。亮点 蛋鸡日粮中添加绿茶粉 (GTP) 可增加蛋白高度和哈氏单位,以及蛋清的羟自由基清除活性。在蛋鸡日粮中添加 GTP 会降低蛋壳厚度和蛋壳强度。蛋鸡饲喂含有 GTP 的日粮增加了空气空间直径并降低了鸡蛋储存期间的溶菌酶活性。
更新日期:2020-06-12
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