■这项研究的目的是评估使用来自黑金合欢(金合欢)的缩合单宁作为氧化锌和促进生长的抗生素的替代添加剂对性能的影响,消化率,和仔猪在育苗阶段的肠道健康。
■在育苗阶段(22至64日龄),对总共200头22日龄,重6.0±0.9kg的PIC®仔猪进行了四种处理:CONTR(对照饮食);ENRZnO(在前21天,对照饮食+10mg/kg的恩拉霉素+2,500mg/kg的氧化锌);BUT(对照饮食+900mg/kg的丁钠对照)实验设计是随机分组,有4个处理和10个重复,用五只动物作为实验单元。动物园技术的表现,腹泻指数评分,对直肠深部菌群的膳食消化率和宏基因组学进行了评估.
■TAN在托儿所阶段的体重增加和最终体重(p<0.05)大于CONTR(394vs.360g/d,和22.6vs.21.1kg,分别),对于ENR+ZnO和BUT(365和382g/d,21.3和22.1公斤,分别)。半液体腹泻的治疗方法之间没有差异(评分2),但CONTR比ENR+ZnO有更多的严重腹泻病例(评分3;p<0.05),但是和Tan,42、18、29和21例,分别。处理对稀有分类群或分类群的相对丰度(均匀性)没有影响,但是TAN的使用促进了短杆菌属的丰度增加。和肠球菌属。与其他治疗相比(p<0.05)。
■使用来自黑荆棘的缩合单宁作为性能增强添加剂是有效的,对性能和肠道健康有影响,证明了其在育苗期仔猪日粮中替代氧化锌和恩拉霉素的潜力。
UNASSIGNED: The objective of this study was to evaluate the use of condensed
tannin from black acacia (Acacia mearnsii) as a substitute additive for zinc oxide and growth-promoting antibiotics on the performance, digestibility, and intestinal health of piglets in the nursery phase.
UNASSIGNED: A total of 200 PIC® piglets that were 22 days old and weighed 6.0±0.9 kg were subjected to four treatments in the nursery phase (22 to 64 days of age): CONTR (control diet); ENR+ZnO (control diet + 10 mg/kg of enramycin + 2,500 mg/kg of zinc oxide during the first 21 days); BUT (control diet + 900 mg/kg of sodium butyrate) and TAN (control diet + 2,000 mg/kg of condensed
tannin). The experimental design was a randomized block with 4 treatments and 10 replicates, with a pen of five animals each as the experimental unit. The zootechnical performance, diarrhea index score, dietary digestibility and metagenomics of the deep rectum microbiota were evaluated.
UNASSIGNED: The TAN had greater weight gain in the nursery phase and final weight (p<0.05) than the CONTR (394 vs. 360 g/d, and 22.6 vs. 21.1 kg, respectively), with these values being intermediate for the ENR+ZnO and BUT (365 and 382 g/d, and 21.3 and 22.1 kg, respectively). There was no difference between treatments for semi-liquid diarrhea (score 2), but CONTR had more cases of severe diarrhea (score 3; p<0.05) than ENR+ZnO, BUT and TAN, with 42, 18, 29 and 21 cases, respectively. The treatments had no impact on rare taxa or the relative abundances of taxonomic groups (uniformity), but the use of TAN promoted an increase in the abundances of Brevibacillus spp. and Enterococcus spp. compared to the other treatments (p<0.05).
UNASSIGNED: The use of condensed
tannin from black wattle as a performance-enhancing additive was effective, with effects on performance and intestinal health, demonstrating its potential as a substitute for zinc oxide and enramycin in the diets of piglets in nursery phase.