摘要
为研究日粮中添加不同浓度的油橄榄渣(olive cake,OC)对青脚麻鸡生产性能、免疫功能及新城疫抗体水平的影响。试验采用1日龄青脚麻鸡720只,随机分为对照组、3%OC组、5%OC组、7%OC组,每组6个重复,每个重复30只鸡。对照组饲喂正常玉米-豆粕型基础日粮,试验组在基础日粮中分别添加3%、5%和7%的OC,试验分两阶段进行,1~21 d为第一阶段,22~42 d为第二阶段。结果表明:1~21日龄阶段,日粮中添加不同浓度的OC均可提高青脚麻鸡的日增重、半净膛率、全净膛率、屠宰率、胸肌率和腿肌率,降低料重比。7%OC组青脚麻鸡的日绝对生长率显著高于对照组(P<0.05),料重比显著低于对照组;与对照组相比,3%OC组青脚麻鸡法氏囊指数显著增高(P<0.05),青脚麻鸡胸腺指数显著增高(P<0.05);5%OC组青脚麻鸡血清内新城疫抗体水平显著高于对照组(P<0.05)。22~42日龄阶段,日粮中添加不同浓度的OC均可促进青脚麻鸡的日绝对生长量、半净膛率、全净膛率、屠宰率、胸肌率和腿肌率,降低料重比。7%OC组青脚麻鸡的生产性能显著优于对照组(P<0.05);5%OC组青脚麻鸡免疫器官(法氏囊、胸腺、脾脏)指数显著大于对照组(P<0.05),血清内新城疫抗体水平显著高于对照组(P<0.05)。综上所述,本试验条件下,在日粮中添加合适剂量的OC可有效提高青脚麻鸡的生产性能、免疫功能和新城疫抗体水平,以日粮中添加5%的油橄榄渣为宜。
In order to investigate the effects of different concentrations of olive cake(OC)on production performance,immune function and Newcastle disease antibody levels of cyan-shank partridge chicken.A total of 7201-day-old cyan-shank partridge chickens were randomly divided to control group,3%OC group,5%OC group,7%OC group,6 replicates for each group and 30 chickens in each replicate.Control group fed normal corn-soybean meal diet,experimental group were fed diet with 3%,5%and 7%olive cake based on normal corn-soybean meal diets,The experiment is divided into 2 phases,1-21 d was early period,22-42 d was late period.The results indicated that,early pe⁃riod,the daily gain,percentage of half eviscerated yield,eviscerated weight,dressed percentage,per⁃centage of breast muscle and percentage of leg muscle can be improved by adding different concentrations of olive cake to the diet,and reduced fead conversion rate.The daily absolute growth of 7%OC group was significantly better than control group(P<0.05),the feed conversion rate of 7%OC group was significantly lower than control group(P<0.05);compared with control group,bursa index was signifi⁃cantly increased in 3%OC group(P<0.05),thymus index was significantly increased in 7%OC group(P<0.05);the levels of NDV antibody in serum of 5%OC group was significantly higher than control group(P<0.05).Late period,the daily absolute growth,percentage of half eviscerated yield,eviscerated weight,dressed percentage,percentage of breast muscle and percentage of leg muscle can be promoted by adding different concentrations of olive cake to the diet,and reduced fead conversion rate.the perfor⁃mance of 7%OC group was significantly better than that of control group(P<0.05);the indexes of im⁃mune organs(bursa of Fabricius,thymus and spleen)in 5%OC group were significantly higher than con⁃trol group(P<0.05);serum NDV antibody levels of 5%OC group was significantly higher than control group(P<0.05).To sum up,under the condition of our experiments,the proper additive dose of OC in t
作者
陈文东
朱秀娟
王让军
何玉鹏
苏满春
徐永平
CHEN Wendong;ZHU Xiujuan;WANG Rangjun;HE Yupeng;SU Manchun;XU Yongping(School of Agriculture and Forestry Technology,Longnan Teachers College,Gansu Longnan 742500,China;Center for Research&Development of Longnan Characteristic Agro-Bioresoueces,Gansu Longnan 742500,China;College of Animal Scinece and Technology,Gansu Agricultural University,Gansu Lanzhou 730000,China;College of Veterinary Medicine,Northwest A&F University,Shaanxi Yangling 712100,China)
出处
《饲料工业》
北大核心
2023年第16期71-76,共6页
Feed Industry
基金
2021年甘肃省科技重大专项[21ZD4NK045]
2021年甘肃省自然科学基金[21JR7RK912]
2022年甘肃省重点研发计划项目[22YF7FK220]
2023年甘肃省高校教师创新基金项目[2023B-412]
陇南市科技计划项目[2021-11,2021-12]。
关键词
油橄榄渣
青脚麻鸡
生产性能
免疫功能
新城疫抗体水平
olive cake
cyan-shank partridge chicken
production performance
immune function
new⁃castle disease antibody level
