خيارات البحث
النتائج 641 - 645 من 645
Effects of dietary copper and zinc supplementation on some biochemical parameters in broilers
2003
Cinar, M. | Nizamlioglu, M.(Selcuk Univ., Faculty of Veterinary Medicine, Konya (Turkey))
In the present study, effects of different doses of dietary Cu and Zn suplementation on plasma biochemical parameters in broilers were investigated. In this study, a total of 430 avian broiler chicks were used and divided into 12 groups as control and treatment groups in which different doses of Cu, Zn and Cu+Zn supplemented
اظهر المزيد [+] اقل [-]Effects of vitamin E and several types of unsaturated fatty acids supplementation on the lipid peroxidations of rats
2003
Oz, N.(Kadinhani Health Profession College, Konya (Turkey)) Kurtoglu, F.(Selcuk Univ., Faculty of Veterinary Medicine, Konya (Turkey))
The pathological findings on normal dogs and bile ducts partially ligated dogs in experimentally hexachlorophone toxicosis
2003
Oruc, E.(Veterinary Control and Research Inst., Konya (Turkey)) Ciftci, M.K.(Selcuk Univ., Faculty of Veterinary Medicine, Konya (Turkey))
Strain predominance following exposure of vaccinated and naive pregnant gilts to multiple strains of porcine reproductive and respiratory syndrome virus النص الكامل
2003
Lager, K.M. | Mengeling, W.L. | Wesley, R.D.
Two studies were performed in order to test the relative ability of different strains of porcine reproductive and respiratory syndrome virus (PRRSV) to replicate and cross the placental barrier in pregnant gilts. Study 1 comprised 6 nonvaccinated gilts. Study 2 comprised 8 nonvaccinated gilts and 12 gilts that were vaccinated twice before conception. On, or about, gestation day 90 all gilts were simultaneously exposed to 20 field strains of PRRSV (all strains were distinguishable by restriction fragment length polymorphism (RFLP) patterns). Gilts of study 1 were euthanized on day 7 postpartum. Gilts of study 2 were euthanized on, or about, gestation day 111. All gilts, pigs, and fetuses were tested for the presence and type of strain of PRRSV. Of 128 samples shown to contain PRRSV, 118 contained a single strain, 4 contained 2 strains, and 2 contained a strain or strains for which the RFLP pattern was undecipherable. Only 8 of the 20 strains were isolated from nonvaccinated gilts and their litters. And only 2 of the 20 strains (notably 2 of the same strains isolated from nonvaccinated gilts and their litters), were isolated from vaccinated gilts and their litters. Moreover, 1 of the 2 strains accounted for most (31 of 37; 84%) of the isolates from the vaccinated group. Collectively these results indicate that strains differ in their ability to replicate in pregnant gilts and cross the placental barrier. And they suggest that maternal immunity, although sometimes insufficient to prevent transplacental infection, can exert additional selective pressure.
اظهر المزيد [+] اقل [-]Differentiation of infection from vaccination by detection of antibodies to the non-structural protein 3ABC of foot-and-mouth disease virus النص الكامل
2003
Niedbalski, W. | Haas, Bernd