乳牛衣原体病灭活疫苗的研制

将免疫原性稳定的鹦鹉热衣原体SX5菌株灭活,加入油佐剂制备乳牛衣原体病灭活疫苗,并对疫苗的安全性进行了检测。用该疫苗对成年牛和犊牛进行了最小免疫量试验、效力试验和免疫持续期试验;结果表明,最小免疫量分别为3 mL和5 mL,平均免疫保护率达94．4％,免疫持续期达10个月。疫苗保存期试验表明,在4℃条件下可保存12个月。本动物安全试验和田间小试免疫证明,该疫苗安全性好,乳牛注射疫苗后饮食、产乳量及注苗部位没有明显的异常变化。

中西兽医结合治疗乳牛蹄病

乳牛蹄病在我国的大部分地区都较为常见,有多种症候,但是导致该病的主要原因就是乳牛的营养物质缺乏以及饲养管理问题。该病常见的蹄部症候分为趾蹄糜烂、增生、红肿、剪状体以及出现各种的翘尖蹄、翻卷蹄等问题,并且一些营养元素缺乏的乳牛还极易出现趾骨骨折、变形、粉化等问题。本文就结合作者的实际中西医治疗经验,结合实际的案例,论述了中西医结合治疗该病的相应防治措施。

Drug Sensitive Test on Main Pathogenic Bacteria of Cow Recessiveness Mastitis Using Traditional Chinese Medicine Preparation “Zengrujianniusan”

According to the theory of Chinese veterinary medicine and characteristics of Chinese herbal medicine, four different preparations of compound Chinese medicine ＂Zengrujianniusan＂ were composed, and the prepared water decoction was used to carry on the bacteriostatic test on main pathogens of cow recessiveness mastitis. The results showed that the four different prescriptions of water decoction all had antibacterial effects. The prescription 3 was sensitive to Staphylococcus aureus and Streptococcus agalactiae, while the other three prescriptions showed high sensitivity, and the prescription 3 had the strongest bacteriostatic effects.

Effect Evaluation about Pathogenic Bacteria of Diary Cow Mastitis Treated with Ruyuankang

In this research,36 cows with clinical mastitis were treated with the Chinese herb injection Ruyuankang which was developed by our group.Milk samples of pre and post treatment of Ruyuankang were collected for isolation and characterization of pathogenic bacteria.The dynamic changes of pathogenic bacteria were investigated as well.The results indicated that Ruyuankang could effectively inhibit the common pathogenic bacteria of mastitis which result in the negative rate of pathogenic bacteria 71.74%.