摘要
本研究旨在探讨松针多糖对肉鸡生长性能和免疫功能的影响。选取240只1日龄的815肉鸡,随机分为4个处理,每个处理4个重复,每个重复15只鸡,分别在基础饲粮中添加0(对照)、0.05%、0.10%和0.15%的松针多糖提取物。试验期为42d,测定处理组生长性能、免疫器官指标、血清免疫指标。结果显示,在生长前期(1-21d),松针多糖对肉鸡的生产性能没有影响(P>0.05),0.05%多糖组白细胞介素2的浓度极显著高于对照组(P<0.01),对肿瘤坏死因子、胸腺素及免疫器官指标影响不显著(P>0.05)。在生长后期(22-42d),0.10%多糖组平均日增重显著高于对照组(P<0.05),对平均体重及料重比无显著影响(P>0.05),0.05%多糖组肿瘤坏死因子浓度显著高于对照组(P<0.05),而对白细胞介素2、胸腺素及免疫器官指标影响不显著(P>0.05)。结果表明,饲粮中添加适量的松针多糖在一定程度上可以提高肉鸡的免疫功能和生产性能,0.10%的松针多糖添加量较为适宜。
This experiment was conducted to investigate the effects of pine needles polysaccharide on growth performance and immune functions of broilers. Two hundred and forty one-day-old 815 broilers were randomly divided into 4 groups with 4 replicates in each group and 15 broilers in each replicate. The basal diets were supplemented with 0, 0.05%, 0.10% and 0.15% pine needles polysaccharide, respectively. The experiment lasted for 42 days. Growth performance, immune organomdocws indices, serum immune indices were determined in different periods. The results showed as follows： in the early stage （1-21 d）, there was no significant differ ence among all groups in the growth performance （P〉0.05）. The concentration of IL2 in the 0.05% polysaccharide group was extremely significantly higher than that in control group （P〈0.01）, while pine needles pol ysaccharide took no effect on the TNFα, thymosin concentration and immune organ indices （P〉0.05）. In the later stage （22-42 d）, ADG （average daily gain） of the broilers in the 0.10% polysaccharide group was significantly higher than that in control group （P〈0.05）. There was no difference in ABG （average body gain） and F/G （feed/gain） in all the groups （P〉0.05）. The concentration of TNFα in 0.05% polysaccharide group was significantly higher than that in control group （P〈0.05）. In contrast, there was no significant difference in the IL2, thymosin concentration and immune organ indices in all groups （P〉0.05）. In conclusion, pine needles polysaccharide could improve the growth performance and immune functions of broilers. The adding amount of 0.05%-0.10% pine needles polysaccharide was appropriate.
出处
《草业科学》
CAS
CSCD
北大核心
2016年第8期1633-1639,共7页
Pratacultural Science
基金
国家科技支撑计划项目(2013BDA10B04-03)
江西省科技厅项目(2010BNA07400)
关键词
松针多糖
肉鸡
生长性能
免疫功能
pine needles polysaccharide
broiler
growth performance
immune function
