全价饲料中添加有益光合细菌在仔猪生产中的应用

Application of Adding Beneficial Photosynthetic Bacteria to Complete Feed in Raising Piglets

为了适应人口的增加和养殖业饲料添加的发展,扼制城市排污、畜禽养殖带来的粪便和粪便中残余的有害物质氨氮、硫化物、总磷和亚硝酸盐等污染环境,笔者对云南高原湖泊筛选分离的11株光合细菌进行氨氮、总磷、硫化物、亚硝酸盐的降解能力试验。结果表明:11株菌株在高浓度的污染物中经过120h的培养降解,氨氮最高降解率为42.6%,总磷最高降解率为93.2%,硫化物最高降解率为71.3%,亚硝酸盐最高降解率为100%,在此基础上选择综合降解能力较强的3株菌混合进行仔猪养殖的试验。结果表明,在全价饲料中加入光合细菌添加剂,明显提高了养殖效率,并有效地降低了仔猪粪便排泄物中有害物质的含量,消除了有害物质对动物肠道刺激作用。从而证明了将光合细菌制剂作为饲料添加剂,应用于生猪生产,具有促进生长发育、提高饲料报酬、增强防病能力和改善生态环境等作用。

In order to meet the needs of the increasing population and the development of feed addition of the breeding industry, so that the spread of the environmental pollution resulting from urban sewage as well as the harmful substance in the feces from the livestock and poultry feeding can be controlled. The present study has firstly tested the biodegrability of 11 photosynthetic bacteria screened and seperated from Yunnan plateau lake in degrading ammonia nitrogen （NH-N）, total phosphorus （TP）, sulfide and nitrite （NIT）. The study showed that being cultured and degraded with 120 h in pollutants with high concentration, the highest degradation rate of NH-N of these 11 bacterial strains was 42.6%; the degradation rate of TP reached 93.2%; the degradation rate of sulfide reached 71.3% and the highest degradation rate of NIT was 100%. Then, the study had chosen 3 bacterial strains with strong intergrated biodegrability, making them mixed into each other and applied in raising piglets. Adding beneficial photosynghetic bacteria to complete feed, the study showed that the breeding efficiency had been largely increased and the content of hazardous material of piglets ’ excrements had been effectively decreased so as to eliminate stimulation of these harmful material to animals ’ intestinal tract. The study proved that photosynthesis bacteria as feed additive could promote growing development, increase fodder returns and enhance anti-disease capability when it was added in raising pigs.