| 饲粮中添加枯草芽孢杆菌或粪肠球菌对育成期水貂生长性能、营养物质消化率及氮代谢的影响 |
| |
| 引用本文： | 乜豪,张铁涛,崔虎,王中成,谢静静,高秀华.饲粮中添加枯草芽孢杆菌或粪肠球菌对育成期水貂生长性能、营养物质消化率及氮代谢的影响[J].动物营养学报,2017,29(11). |
| |
| 作者姓名： | 乜豪 张铁涛 崔虎 王中成 谢静静 高秀华 |
| |
| 作者单位： | 1. 中国农业科学院饲料研究所,农业部饲料生物技术重点实验室,北京 100081;2. 中国农业科学院特产研究所,长春,130112 |
| |
| 基金项目： | 国家自然资源平台专项"特种动物种质资源平台" |
| |
| 摘 要： | 本试验旨在研究饲粮中添加枯草芽孢杆菌或粪肠球菌对育成期水貂生长性能、营养物质消化率及氮代谢的影响。试验采用单因素完全随机试验设计,选取60日龄、健康、雄性水貂70只,平均体重为(957.37±93.96)g,随机分成7组,每组10个重复,每个重复1只。Ⅰ组为对照组,饲喂基础饲粮;Ⅱ、Ⅲ和Ⅳ组分别在基础饲粮中添加1×10~9、1×10~(10)和1×10~(11)CFU/kg枯草芽孢杆菌,Ⅴ、Ⅵ和Ⅶ组分别在基础饲粮中添加1×108、1×10~9和1×10~(10)CFU/kg粪肠球菌。预试期7 d,正试期60 d。结果表明:1)Ⅲ组的末重显著高于Ⅰ组(P0.05),Ⅳ组的平均日采食量显著低于Ⅰ组(P0.05),各组间平均日增重和料重比差异不显著(P0.05)。2)Ⅱ、Ⅲ和Ⅴ组的干物质消化率显著高于Ⅰ组(P0.05),Ⅴ组显著高于Ⅰ、Ⅳ、Ⅵ和Ⅶ组(P0.05);Ⅴ组的蛋白质消化率显著高于Ⅰ和Ⅶ组(P0.05);各组间脂肪消化率差异不显著(P0.05)。3)Ⅳ、Ⅴ和Ⅵ组的粪氮含量显著低于Ⅰ组(P0.05),Ⅴ和Ⅵ组的尿氮含量显著低于Ⅰ组(P0.05)。各试验组的氮沉积均高于Ⅰ组,但是差异不显著(P0.05)。Ⅲ和Ⅴ组的净蛋白质利用率显著高于Ⅰ组(P0.05),Ⅲ组的蛋白质生物学价值显著高于Ⅰ组(P0.05)。由此可见,育成期水貂饲粮中添加1×10~(10)CFU/kg枯草芽孢杆菌或1×10~8CFU/kg粪肠球菌时,水貂的生长性能、营养物质消化率、氮沉积、净蛋白质利用率和蛋白质生物学价值较为理想。
|
| 关 键 词： | 枯草芽孢杆菌 粪肠球菌 水貂 生长性能 营养物质消化率 氮代谢 |
Effects of Dietary Bacillus subtilis or Enterococcus faecalis on Growth Performance,Nutrient Digestibility and Nitrogen Metabolism of Minks during Growing Period |
| |
| NIE Hao,ZHANG Tietao,CUI Hu,WANG Zhongcheng,XIE Jingjing,GAO Xiuhua.Effects of Dietary Bacillus subtilis or Enterococcus faecalis on Growth Performance,Nutrient Digestibility and Nitrogen Metabolism of Minks during Growing Period[J].Acta Zoonutrimenta Sinica,2017,29(11). |
| |
| Authors: | NIE Hao ZHANG Tietao CUI Hu WANG Zhongcheng XIE Jingjing GAO Xiuhua |
| |
| Abstract: | This experiment was conducted to study the effects of dietary Bacillus subtilis or Enterococcus faeca-lis on growth performance, nutrient digestibility and nitrogen metabolism of minks during growing period. The experiment was designed using a single factor complete randomized trial. Seventy healthy male 60-day-age minks with average weight of (957.37±93.96) g were randomly divided into 7 groups with 10 replicates per group and 1 mink per replicate. GroupⅠ( control group) was fed a basal diet, groupsⅡ,ⅢandⅣwere fed the basal diet supplemented with 1×109, 1×1010 and 1×1011 CFU/kg Bacillus subtilis, and groupsⅤ, Ⅵ andⅦ were fed the basal diet supplemented with 1×108, 1×109 and 1×1010 CFU/kg Enterococcus faecalis, re-spectively. The adaptation period lasted for 7 days and the formal trial period lasted for 60 days. The results showed as follows:1) the final weight of group Ⅲ was significantly higher than that of group Ⅰ ( P<0.05) , the average daily feed intake of group Ⅵ was significantly lower than that of group Ⅰ( P<0.05) , the average daily gain and feed to gain ratio had no significant difference among all groups ( P>0.05) . 2) The dry matter digestibility of groups Ⅱ, Ⅲ and Ⅴ was significantly higher than that of group Ⅰ (P<0.05), and the dry matter digestibility of group Ⅴ was significantly higher than that of groupsⅠ,Ⅳ,Ⅵ andⅦ ( P<0.05);the protein digestibility of group Ⅴ was significantly higher than that of groups Ⅰ and Ⅶ ( P<0.05) , the fat di-gestibility had no significant difference among all groups (P>0.05). 3) The fecal nitrogen content of groupsⅣ, Ⅴ and Ⅵ was significantly lower than that of group Ⅰ( P<0.05) , the urinary nitrogen content of groupsⅤ and Ⅵ was significantly lower than that of group Ⅰ ( P<0.05) . The nitrogen deposition of test groups was higher than that of groupⅠ, but had no significant difference ( P>0.05) . The net protein utilization of groupsⅢ and Ⅴ was significantly higher than that of group Ⅰ (P<0.05), and the biological value of protein of group Ⅲ was significantly higher than that of group Ⅰ ( P<0.05) . In conclusion, when dietary supplemented with 1×1010 CFU/kg Bacillus subtilis or 1×108 CFU/kg Enterococcus faecalis, the growth performance, nutri-ent digestibility, nitrogen deposition, net protein utilization and biological value of protein of minks are more preferably. |
| |
| Keywords: | Bacillus subtilis Enterococcus faecalis minks growth performance nutrient digestibility nitro-gen metabolism |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
