摘要
为研究苦木提取物(PQE)替代抗生素对肉鸡生长性能、免疫功能、屠宰性能以及抗氧化性能的影响,试验选取300只体重相近的1日龄肉仔鸡为研究对象。对照组饲喂基础日粮,PQE1、PQE2和PQE3组分别在基础日粮中添加100、200、400 mg/kg的苦木提取物,抗生素组在基础日粮中添加250 mg/kg的金霉素(含量20%),试验期为42 d。结果表明:与对照组相比,PQE2组的平均日增重提高了6.3%(P <0.05),平均日采食量提高了2.2%(P <0.05),料重比降低了3.9%(P <0.05)。肉鸡的屠宰率与对照组相比均有提高,其中PQE2组差异显著(P <0.05)。PQE1和PQE2组的半净膛率分别较对照组提高3.05%和2.69%(P <0.05)。各试验组的全净膛率较对照组均有提高,其中PQE2组提高了4.32%(P <0.05)。各试验组的脾脏指数与对照组相比均有所增加,但差异不显著(P> 0.05)。法氏囊指数增加显著(P <0.05),PQE2组较对照组增加了19.05%。胸腺指数与对照组相比增加不明显(P> 0.05)。肉鸡血清抗氧化性能中,丙二醛(MDA)水平呈现下降趋势(P <0.05),其中PQE3组下降了19.15%,谷胱甘肽过氧化物酶(GSH-Px)、总抗氧化能力(T-AOC)和超氧化物歧化酶(SOD)水平也高于对照组。综上所述,在日粮中添加200 mg/kg苦木提取物对肉鸡的生长性能、免疫功能、屠宰性能和血清抗氧化性能效果最佳。
The effect of Picrasma quassioides extract(PQE)instead of antibiotics on the growth performance,immune function,slaughter performance and antioxidant performance of broilers was evaluated in this study.300 broilers of 1-day-old with similar body weight were selected as the trial objects.The control group was fed with the basic diet.The PQE1,PQE2 and PQE3 groups were added with 100,200,400 mg/kg Picrasma quassioides extract respectively in the basic diet.The antibiotic group was added with 250 mg/kg chlortetracycline(20%)in the basic diet.The trial period was 42 days.The results showed that the average daily gain of PQE2 group increased by 6.3%(P>0.05),the average daily food intake increased by 2.2%(P<0.05),and the feed weight ratio decreased by 3.9%(P<0.05)compared with the control group.The dressed percentage of broilers was higher than that of control group,and the difference of PQE2 group was significant(P<0.05).The percentage of half-eviscerated yield of PQE1 and PQE2 groups increased by 3.05%and 2.69%respectively compared with the control group(P<0.05).The percentage of eviscerated yield of all PQE groups increased,and by 4.32%(P<0.05)in PQE2 group.The spleen index of each test group increased compared with that of the control group,but there was no significant difference(P>0.05).The index of bursa of fabricius increased significantly(P<0.05),and the PQE2 group increased by 19.05%compared with that of conrol group.Thymus index did not significantly increase compared with the control group and the antibiotic group(P>0.05).In the serum antioxidant performance of broilers,the level of malondialdehyde(MDA)showed a downward trend(P<0.05),the PQE3 group decreased by 19.15%,and the level of glutathione peroxidase(GSH-Px),total antioxidant capacity(T-AOC)and superoxide dismutase(SOD)were also higher than that in the control group.In conclusion,adding 200 mg/kg PQE to the diet had the best effect on the growth performance,immune function,slaughter performance and serum antioxidant performance of broilers.
作者
臧青民
黄华希
辛桂瑜
覃兰
郭艺鹏
卢恩科
陈荣
章烨雯
ZANG Qingmin;HUANG Huaxi;XIN Guiyu;QIN Lan;GUO Yipeng;LU Enke;CHEN Rong;ZHANG Yewen(College of Biology and Pharmacy,Yulin Normal University,Yulin,Guangxi 537000,China;Guangxi Key Laboratory for Chemistry and Biotechnology of Agricultural Resources,Yulin,Guangxi 537000,China;Key Laboratory for Conservation and Utilization of subtropical Bio-Resources,Education Department of Guangxi Zhuang Autonomous Region,Yulin,Guangxi 537000,China)
出处
《中国饲料》
北大核心
2023年第15期76-80,共5页
China Feed
基金
广西科技基地和人才专项(桂科AD20159090)
广西自然科学基金面上项目(2022GXNSFAA035544)
玉林市科技计划项目(202235125)
玉林市科技计划项目(202235120)
玉林市科技计划项目(202235137)
玉林师范学院校级科研项(2014YJYB08)
玉林师范学院大学生创新创业训练计划立项项目(202210606217)。
关键词
苦木提取物
肉鸡
生长性能
免疫功能
血清抗氧化
屠宰性能
Picrasma quassioides extract
broilers
growth performance
immune function
antioxidant performance
slaughter performance
