摘要
为探讨日粮中添加单宁酸对北京鸭屠宰性能、抗氧化指标和免疫器官指数的影响,选取1200只1日龄体重相近的Z型北京鸭,随机分为4组,每组5个重复,每个重复60只鸭,对照组饲喂基础日粮,试验组在基础日粮的基础上分别添加100 mg/kg、200 mg/kg、300 mg/kg的单宁酸,试验期38 d。结果显示:①饲粮中添加单宁酸可显著降低北京鸭料重比(P<0.05),而对平均出栏重、平均日增重和平均日采食量无显著影响(P>0.05);②饲粮中添加单宁酸对北京鸭屠宰性能无显著影响(P>0.05);③200 mg/kg、300 mg/kg组血清中谷胱甘肽过氧化物酶(GSH-Px)活性极显著提高(P<0.01),200 mg/kg组血清总超氧化物歧化酶(T-SOD)活性极显著提高(P<0.01),各试验组血清丙二醛(MDA)含量与对照组差异不显著(P>0.05);④100 mg/kg、200 mg/kg组肝脏GSH-Px活性极显著提高(P<0.01),所有试验组肝脏T-SOD活性显著提高(P<0.05),肝脏MDA含量与对照组差异不显著(P>0.05);⑤300 mg/kg组胸腺指数(P<0.05)和脾脏指数显著提高(P<0.01),所有试验组法氏囊指数与对照组差异不显著(P>0.05)。研究表明,单宁酸能提高北京鸭生长性能和抗氧化能力,促进免疫器官发育,且不会对北京鸭屠宰性能产生不良影响。
In order to investigate the effects of dietary tannic acid on slaughter performance, antioxidant index and immune organ index of Peking ducks, 1 200 1-day-age Z-type Peking ducks with similar body weight were randomly divided into 4 groups, with 5 replicates in each group and 60 ducks in each replicate. The control group was fed the basal diet, and the experimental group was fed the basal diet with 100 mg/kg, 200 mg/kg and 300 mg/kg tannic acid,respectively. The experiment lasted for 38 days. The results showed that:(1) Dietary tannic acid significantly decreased feed to weight ratio(P<0.05), but had no significant effect on average marketing weight, average daily gain and average daily feed intake(P>0.05);(2) Dietary tannic acid had no significant effect on slaughter performance of Peking duck(P>0.05);(3) The serum glutathione peroxidase(GSH-Px) activity was significantly increased in 200 mg/kg and 300 mg/kg groups(P<0.01), and the serum total superoxide dismutase(T-SOD) activity was significantly increased in 200 mg/kg group(P<0.01). The serum malondialdehyde(MDA) contents of experimental groups were not significantly different from that of the control group(P>0.05);(4) Dietary 100 mg/kg and 200 mg/kg tannic acid could significantly increase the activity of GSH-Px in liver(P<0.01), the activity of T-SOD in liver of all experimental groups were significantly increasd(P<0.05), but there was no significant difference in the content of MDA between experimental groups and the control group(P>0.05);(5) The thymus index(P<0.05) and spleen index(P<0.01) were significantly increased in 300 mg/kg group, but there was no significant difference in bursa index between all experimental groups and the control group(P>0.05). It’s suggested that tannic acid could improve the growth performance and antioxidant capacity of Peking duck,promote the development of immune organs, and had no adverse effect on the slaughter performance.
作者
王春明
穆春雨
焦莉
王洪芳
卢连水
孙海层
谢明
高爱荣
WANG Chunming;MU Chunyu;JIAO Li;WANG Hongfang;LU Lianshui;SUN Haiceng;XIE Ming;GAO Airong(Cangzhou Technical College,Cangzhou,Hebei 061001;Hebei Dongfeng Breeding Co.,Ltd.,Cangzhou,Hebei 062351;Institute of Animal Sciences of CAAS,Beijing 100193;Market Supervision and Administration Bureau of Fengnan District of Tangshan City,Tangshan,Hebei 063000)
出处
《中国家禽》
北大核心
2021年第6期41-45,共5页
China Poultry
基金
河北省教育厅科技类青年基金项目(QN2021403)。
关键词
单宁酸
北京鸭
屠宰性能
抗氧化
免疫器官
tannic acid
Peking duck
slaughter performance
antioxidation
immune organ