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971.
972.
The equine practitioner is in a position to make day‐to‐day decisions regarding antimicrobial drug (AMD) use for their patients as well as to educate their clients regarding judicious use. General guidelines regarding judicious use of AMDs in equine patients have been developed by the American Association of Equine Practitioners. Detailed guidelines for AMD use in specific equine diseases supported by clinical trials and results of surveillance studies focused on resistance among equine bacterial pathogens are lacking. Studies that could lead to detailed and justifiable use recommendations would allow the equine practitioner to make more informed decisions regarding when to use AMDs, which drugs should be used and how they should be used (e.g. dose, route and duration). 相似文献
973.
974.
975.
笔者分析、总结并论述了研制兽用中药新制剂的必要性和可行性 ,同时就开发工艺、思路和实现中兽药现代化的策略等方面作了进一步的探讨 相似文献
976.
977.
在蓖麻蚕生产中,软化病(细菌性胃肠病和细菌性败血病的总称)发生得比较多,尤其在五龄期发病严重,对生产威胁较大,本试验用消特灵、绿迪奥、蚕用绿霉素、大蒜白酒液(自制)蚕药在蓖麻蚕五龄期分别添食,结果表明以上药液添食后,五龄蚕期病死蚕率比对照区明显降低。 相似文献
978.
本文为应用~(60)Co—γ射线辐照边条红参(Radix Ginseng)、当归(Radix AnselicaeSinensis)、槟榔(Semen Arecae)等21种中药材杀虫、灭菌效果及其主要有效成分变化的研究。结果表明,辐照杀虫剂量范围为1.5~2.3kGy;灭菌剂量范围为3.8~7.6kGy;以3.7~20.6kGy剂量辐照边条红参、当归头、槟榔、其主要有效成分人参总皂甙、人参单体皂甙Rg_1,当归挥发油以及榔槟生物碱的颜色和百分含量均无明显变化,杀虫、灭菌效果显著,防止二次感染、辐照后贮藏一年仍可达到色鲜、味正、不生虫、不发霉的良好效果。 相似文献
979.
A questionnaire survey on the factors affecting the motivation and work attitudes of Finnish veterinary meat inspectors was conducted. Traditional meat inspection on the slaughtering line and in the emergency department took up most of the weekly work time (15.8% and 15.8%, respectively). Emergency slaughtering (29%) and general hygiene control (29%) were considered the most important tasks of veterinary meat inspectors. Assurance of meat safety (68%) was cited as the most important single reason for meat inspection. Veterinary meat inspectors were of the opinion that they do not play an important role in the training of slaughterhouse personnel, although they considered training to be a very important means for promoting hygienic work methods among workers. Three orientations of the respondents toward meat inspection and slaughterhouse operations were revealed from the survey: hygiene, education, and emergency slaughter work orientation. Meat inspection veterinarians may feel isolated from the other personnel responsible for maintaining quality and hygiene. The orientation and possible isolated position of veterinary meat inspectors should be given more attention in both the basic undergraduate and postgraduate training of veterinary meat inspectors. 相似文献
980.
Ota Barta Priscilla P Oyekan 《Comparative immunology, microbiology and infectious diseases》1981,4(2):209-221
Lymphocyte transformation test is a powerful tool in laboratory testing of immunologic competence of animals. The impaired function of the lymphocytes or presence of mitogenesis suppressing factors in the patient serum were detected by comparing lymphocyte transformation (expressed as thymidine incorporation) obtained in media containing either autologous, homologous, or fetal calf serum additions. Most valuable results were obtained by using at least two, preferably three, different phytomitogens: concanavlin A (Con A), pokeweed mitogen (PWM), and pl ytohemagglutinin (PHA) at optimal concentrations (Con A, 15 μg/ml, PWM and PHA, 5 μg/ml) and decreased concentrations (Con A, 5 μg/ml, PWM and PHA, 1 μg/ml). Mitogenesis induced by lipopolysaccharide was considerably smaller and not used routinely. With 2 × 105 lymphocytes/well, the background count of unstimulated lymphocytes in autologous serum in healthy dogs was usually between 100 and 400 counts/min (CPM), in clinically healthy cattle and horses from 200 to over 2000 CPM. Higher CPM were rarely detected without clinical disease. Increased background counts were often associated with viral infections, leukemias and lymphoreticular hyperplasias, decreased background counts were associated with various diseases. The stimulation indexes (SI) of healthy animals in autologous serum with Con A, (5 μg/ml) or PWM or PHA (1 μg/ml) were in the range from 100 to 1000 in the dogs, in the tens for Con A and in hundreds for PWM and PHA in horses and cattle. Increased SI were present during the incubation period of various diseases. Decreased SI were associated with numerous infectious and lymphoreticular diseases and were caused by any of the following: (1) the presence of serum immunosuppressive factor(s) in the patient serum, (2) the decreased response of lymphocytes to mitogens, or (3) increased mitogenicity of lymphocytes due to unidentified serum factors in absence of phytomitogens. 相似文献