鸡马立克氏病CVI988/Rispens疫苗免疫效力试验

本试验用北京市农林科学院畜牧兽医研究所制备的ＣＶＩ９８８／Ｒｉｓｐｅｎｓ疫苗和进口的ＣＶＩ９８８／Ｒｉｓｐｅｎｓ疫苗免疫１日龄来航鸡，７日龄以ＭＤＶ北京－１株血毒进行攻击，６０日龄全群剖检。经免疫效力试验两次测定，３批北京所制备的ＣＶＩ９８Ｒｉｓｐｅｎｓ疫苗产品保护指数分别为试验的９０．０、９０．０、９３．３和试验（２）的１００．０、１００．０、９４．５与进口商品ＣＶＩ／９８８Ｒｉｓｐｅｎｓ苗的保

Experimental Tests of Efficacy of Marek's Disease Vaccine (CVI988/Rispens)

Marek's Disease(MD)vaccine(CVI988/Rispens)produced domestically by the use of the imported Seed Virus of serotype I vaccine strain CVI988/Rispens from the Netherlands was tested for its efficacy in two trials.One day old SPF chickens were all vaccinated with 3 batches(01,02 and 03)of the home grown vaccines and 1 batch of the imported commercial product.Challenge was all done at 7 days postvaccination using the blood virus of viulent MD virus(strain J 1).The protection indices(PI)obtainded at 60 days of age were 90.0,90.0,93.3 in the lst trial and 100.0,100.0,94.5 in the 2nd respectively,compared to 93.3 and 100.0 of the imported vaccine without a significant difference(P>0.05).The results showed that all the vaccines(CVI988/Rispens)of the two different sources provided high rate of protection against the vMDV,and that the protective efficacy of CVI988/Rispens vaccine domestically developed reached the advanced leval of the same kind imported. Key words Mares's Disease; Efficacy;Vaccine;CVI988/RispensESS Management Information System of National Forestation Project in Zhejiang Province$$$$ DAI Shou-lian, YAN Zhen-wu, CAI Ji-zhen (Zhejiang Forestry Department Hangzhou 310020) Abstract This paper introduced the developmental basis and target.Structure and programme design and operating conditions of ma-nagement information system of National Forestation Project in Zhejiang province,and illustrated the main date bases of this system and the function of the modules.