Yan L, Lim S U, Kim I H
Ace M&F Ltd., Seoul, South Korea.
Asian-Australas J Anim Sci. 2012 Dec;25(12):1742-7. doi: 10.5713/ajas.2012.12352.
A total of 96 growing pigs ((Landrace×Yorkshire)×Duroc; BW = 26.58±1.41 kg) were used in a 6-wk feeding trail to evaluate the effects of fermented chlorella (FC) supplementation on growth performance, nutrient digestibility, blood characteristics, fecal microbial and fecal noxious gas content in growing pigs. Pigs were randomly allotted into 1 of 4 dietary treatments with 6 replicate pens (2 barrows and 2 gilts) per treatment. Dietary treatments were: i) negative control (NC), basal diet (without antibiotics); ii) positive control (PC), NC+0.05% tylosin; iii) (fermented chlorella 01) FC01, NC+0.1% FC, and iv) fermented chlorella 02 (FC02), NC+0.2% FC. In this study, feeding pigs PC or FC01 diets led to a higher average daily gain (ADG) and dry matter (DM) digestibility than those fed NC diet (p<0.05), whereas the inclusion of FC02 diet did not affect the ADG and DM compared with the NC group. No difference (p>0.05) was observed on the body weight, average daily feed intake (ADFI), gain:feed (G:F) ratio, the apparent total tract digestibility of N and energy throughout the experiment. The inclusion of PC or FC did not affect the blood characteristics (p>0.05). Moreover, dietary FC treatment led to a higher (p<0.05) lactobacillus concentration and lower E. coli concentration than the NC treatment, whereas the antibiotic supplementation only decreased the E. coli concentration. Pigs fed FC or PC diet had reduced (p<0.05) fecal NH3 and H2S content compared with those fed NC diet. In conclusion, our results indicated that the inclusion of FC01 treatment could improve the growth performance, nutrient digestibility, fecal microbial shedding (lower E. coli and higher lactobacillus), and decrease the fecal noxious gas emission in growing pigs when compared with the group fed the basal diet. In conclusion, dietary FC could be considered as a good source of supplementation in growing pigs because of its growth promoting effect.
总共96头生长猪（（长白猪×大白猪）×杜洛克猪；体重=26.58±1.41千克）被用于一项为期6周的饲养试验，以评估添加发酵小球藻（FC）对生长猪生长性能、养分消化率、血液特征、粪便微生物和粪便有害气体含量的影响。猪被随机分配到4种日粮处理中的1种，每种处理有6个重复栏（每栏2头公猪和2头母猪）。日粮处理如下：i）阴性对照（NC），基础日粮（不含抗生素）；ii）阳性对照（PC），NC+0.05%泰乐菌素；iii）（发酵小球藻01）FC01，NC+0.1%FC，以及iv）发酵小球藻02（FC02），NC+0.2%FC。在本研究中，与饲喂NC日粮的猪相比，饲喂PC或FC01日粮的猪平均日增重（ADG）和干物质（DM）消化率更高（p<0.05），而与NC组相比，添加FC02日粮对ADG和DM没有影响。在整个实验过程中，体重、平均日采食量（ADFI）、增重：采食量（G:F）比、氮和能量的表观全肠道消化率均未观察到差异（p>0.05）。添加PC或FC对血液特征没有影响（p>0.05）。此外，与NC处理相比，日粮FC处理导致乳酸菌浓度更高（p<0.05），大肠杆菌浓度更低，而添加抗生素仅降低了大肠杆菌浓度。与饲喂NC日粮的猪相比，饲喂FC或PC日粮的猪粪便NH3和H2S含量降低（p<）。总之，我们的结果表明，与饲喂基础日粮的组相比，添加FC01处理可以提高生长猪的生长性能、养分消化率、粪便微生物排泄（降低大肠杆菌并增加乳酸菌），并减少粪便有害气体排放。总之，日粮FC因其促生长作用可被认为是生长猪良好的补充来源。
