期刊论文

Techniques of ultrafiltration membrane concentration of inactive vaccine against clostridium perfringens type A of rabbits

中文

西北农林科技大学学报(自然科学版)

JOURNAL OF NORTHWEST AGRICULTURE AND FORESTRY UNIVERSITY（NATURAL SCIENCE EDITION）

1671-9387

2007

30

5

39-42

10.3321/j.issn:1671-9387.2007.05.009

江苏省科技成果推广示范项目(BA2004032)

本校为第一机构

采用野外调查采样和室内分析，对湖南长沙市郊区6个蔬菜基地土壤的立地条件和肥力特性进行了系统研究．结果表明：6个基地的土壤均由分布在河流两岸的河谷阶地和河漫滩的河流沉积物以及分布在红壤丘岗谷地的第四纪红色粘土发育而成．地势平坦、开阔，海拔40～50 m之间．土壤质地为轻壤至重壤，砂粘适中，其总体养分状况良好，有机质、氮素、磷素和钾素含量均很丰富，尤其是土壤全磷和有效磷含量极高，远高于一般高产耕地土壤和自然土壤，是菜园土壤的一大显著肥力特征．其中，以陈家渡基地的土壤肥力水平最高，卷塘村基地的土壤肥力水平最低；不同母质发育的土壤中，以冲积物发育的冲积菜园土的...

Studies were made on concentration of inactive vaccine against clostridium perfringens type A of rabbits by ultrafiltration technology, and techniques of ultrafiltration membrane concentration were established. The antigen was condensed 7 times by ultrafiltration membrane. The vaccine made of the condensed antigen was measured safe and effective by asepsis. Results showed that the flux of filter could be resumed after the use of NaOH. The aseptic examination was qualified,and the rabbits behaved well without any bad reaction by safe examination,Besides, the vaccine against clostridium perfring...