绵羊抗鸡法氏囊病、鸡新城疫二联高免血浆的研制和应用

<正>鸡法氏囊病(IBD)是一种高度接触性传染病,其最大危害是引起免疫抑制,使鸡对<正>多种疫苗免疫应答减弱或消失。近二年来在我省部分地区危害极为严重,发病率为80%左右,死亡率为10~50%。严重的是鸡发生IBD时,许多鸡群继发感染新城疫(ND)更增加了死亡率。过去我们一直采用IBD、ND二联高免卵黄液进行防治,取得了一定的效果。但是毕竟因其是来自同种动物,有随卵黄传递其它病原体的危险,很可能带来一些不必要的损失。为此我们又开展了异源IBD、ND二联高免血浆的研制,取得了较为理想的效果。现初报如下。

绵羊抗IBD、ND二联高免血浆的研制和应用

鸡传染性法氏囊病(IBD)是一种高度接触性传染病,危害最大是引起免疫抑制,使鸡对多种疫苗免疫应答减弱或消失.近二年来在我省部分地区危害极为严重,发病率为80％左右,死亡率为10-15％.严重的鸡发生IBD时,许多鸡群继发感染鸡新城疫(ND),更增加了死亡率.过去我们一直采用IBD、ND二联高免卵黄液进行防治,取得了一定效果.但是毕竟因其是来自同种动物,有随卵黄传递其他一些病原体的危险.很可能带来一些不必要的损失.为此我们又开展了异源IBD、ND高免血浆的研制,取得了理想的效果.现初报如下: 一、材料与方法: 1.实验用动物:6个月龄健康绵羊5只; 2、IBD、ND诊断液:IBD阳性血清和抗原,由哈尔滨兽医研究所提供;

抗鸡法氏囊和新城疫高免血浆的研制及疗效观察

利用欲淘汰的蛋鸡制备抗鸡传染性法氏囊病和鸡新城疫病的高免血浆,对该病的治疗具有疗效确切,作用迅速,无副作用等优点,为治疗法氏囊病和新城疫病开辟了新途径.

猪抗鸡IBD高免血浆的研制和应用

研究结果表明，应用典型传染性法氏囊病（IBD）病死鸡的法氏囊，经适当处理后，作为猪免疫抗原，肌肉或皮下注射肥猪，经两次以上免疫后，被免疫猪血浆的IBD琼扩抗体价达1：256以上。1994年以来，用1：32滴度的该血浆稀释液120万毫升，在疫区治疗IBD病鸡250余万羽，治愈率在95％以上。猪抗鸡IBD高免血浆来源广、效价高、保存期长、成本低、安全性好、无副作用、生产工艺简便、使用方便、无传播同源传染病的危险，综合利用，社会经济效益显著，是一种理想的、极有前途的IBD有效治疗剂。

Structural evolution and optical characterization in argon diluted Si:H thin films obtained by plasma enhanced chemical vapor deposition

The structural evolution and optical characterization of hydrogenated silicon(Si:H) thin films obtained by conventional radio frequency(RF) plasma enhanced chemical vapor deposition(PECVD) through decomposition of silane diluted with argon were studied by X-ray diffractometry(XRD),Fourier transform infrared(FTIR) spectroscopy,Raman spectroscopy,transmission electron microscopy(TEM),and ultraviolet and visible(UV-vis) spectroscopy,respectively.The influence of argon dilution on the optical properties of the thin films was also studied.It is found that argon as dilution gas plays a significant role in the growth of nano-crystal grains and amorphous network in Si:H thin films.The structural evolution of the thin films with different argon dilution ratios is observed and it is suggested that argon plasma leads to the nanocrystallization in the thin films during the deposition process.The nanocrystallization initiating at a relatively low dilution ratio is also observed.With the increase of argon portion in the mixed precursor gases,nano-crystal grains in the thin films evolve regularly.The structural evolution is explained by a proposed model based on the energy exchange between the argon plasma constituted with Ar* and Ar+ radicals and the growth regions of the thin films.It is observed that both the absorption of UV-vis light and the optical gap decrease with the increase of dilution ratio.