鹅副粘病毒对鸡胚及雏鸡致病性的初步研究     

李天松  胡桂学 《吉林畜牧兽医》2002,(10):4-5

鹅副粘病毒是一种引起多种家禽疾病的病毒,通过人工感染鸡胚和雏鸡试验,其结果表明本病毒主要以呼吸系统、消化系统病变为主要临床症状和特征,并且可导致10日龄的鸡胚100％死亡,对雏鸡的致死率为85％。因此,可见其致死率高,广大养殖户应重视鹅副粘病毒的预防。  相似文献   

木质纤维生物量一步法(SSF)转化成乙醇的研究进展   总被引：3，自引：0，他引：3  

张德强  黄镇亚  张志毅 《北京林业大学学报》2001,23(6):52-55

该文综述了木质纤维生物量一步法 (SSF)转化成乙醇的研究进展 ,总结了SSF法的优点 ,提出了现阶段SSF法存在的问题以及在今后研究中需要解决的问题 .  相似文献   

激光人工陈化大曲酒的探讨     

李惠庆  邵耀椿  韩玖荣 《扬州大学学报(农业与生命科学版)》1987,(3)

He-Ne激光处理大曲酒,使酒的乙醛、甲醇减少,乙酸乙脂、高级醇增加。取得与自然陈化相同的快速陈化效果。  相似文献   

保护利用蜘蛛防治水稻害虫的研究   总被引：1，自引：0，他引：1  

王洪全 《植物保护学报》1983,10(4):225-230

水稻是湖南省的主要粮食,每年要用大量化学农药防治害虫。因此,作者在1975～1981年间,于长沙、湘阴等地进行了稻田蜘蛛保护和利用的室内外研究。结果证明,湖南省稻田蜘蛛资源丰富,并有良好的治虫效果。稻褐飞虱是它们的主要食物。通过保护,蜘蛛数量逐年增加,也保护了其它天敌,发挥了多种天敌联合治虫的作用,为综合防治提供了新内容,降低了农药用量,人畜安全,增产增收。  相似文献   

Transport of the oval squid Sepioteuthis lessoniana Férussac, 1831 in Lesson 1830–1831 (Cephalopoda: Loliginidae) for up to 24 h and subsequent transfer to an aquarium     

Yuzuru  IKEDA  Yukio  UETA  the late Ikuko  SAKURAZAWA  the late Gen  MATSUMOTO 《Fisheries Science》2004,70(1):21-27

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Primates in biomedical research     

Committee on the Conservation of Nonhuman Primates 《Science (New York, N.Y.)》1975,189(4196):8

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Clinical trial evaluating the efficacy and safety of cyclosporine in dogs with atopic dermatitis     

Steffan J  Parks C  Seewald W;North American Veterinary Dermatology Cyclosporine Study Group 《Journal of the American Veterinary Medical Association》2005,226(11):1855-1863

OBJECTIVE: To determine efficacy and safety of cyclosporine in the treatment of atopic dermatitis among dogs in North America. DESIGN: Randomized controlled (phase 1) and open-label (phase 2) trials. ANIMALS: 268 dogs with atopic dermatitis. PROCEDURE: In phase 1, dogs were randomly assigned to be treated with cyclosporine (5 mg/kg [2.3 mg/Ib], PO, q 24 h) or a placebo. In phase 2, all dogs were treated with cyclosporine for 16 weeks. Frequency of cyclosporine administration was decreased if dogs improved clinically. RESULTS: At the end of phase 1, canine atopic dermatitis extent and severity index (CADESI) scores for dogs treated with cyclosporine were significantly lower than scores for control dogs. Percentage of dogs with severe pruritus decreased from 67% to 16% for the cyclosporine group but from 66% to only 61% for the control group. During phase 2, cyclosporine dosage was decreased to every-other-day administration in 39% of the dogs after 4 weeks. After 12 weeks, 22% of the dogs were treated twice weekly and 36% were treated every other day. After 16 weeks, CADESI score had decreased > 50% in 68% of the dogs and 47% of dogs had no or mild pruritus. The most frequent adverse reactions were gastrointestinal tract signs. CONCLUSIONS AND CLINICAL RELEVANCE: Results suggest that cyclosporine is efficacious for the treatment of atopic dermatitis in dogs and that frequency of cyclosporine administration can be reduced following an initial induction period. The drug was well tolerated.  相似文献   

2005 Guidelines for the diagnosis, prevention and management of heartworm (Dirofilaria immitis) infection in dogs   总被引：2，自引：0，他引：2  

Nelson CT  McCall JW  Rubin SB  Buzhardt LF  Dorion DW  Graham W  Longhofer SL  Guerrero J  Robertson-Plouch C  Paul A;Executive Board of the American Heartworm Society 《Veterinary parasitology》2005,133(2-3):255-266

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Screening and early detection. Veterinarians underuse human health care prevention tactics     

AVMA Group Health  Life Insurance Trust 《Journal of the American Veterinary Medical Association》2005,226(8):1288

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Prevention: the best cure for occupational asthma     

AVMA Group Health  Life Insurance Trust 《Journal of the American Veterinary Medical Association》2005,226(6):860-861

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