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Effect of halothane, isoflurane, and pentobarbital anesthesia on myocardial irritability in chickens.
1990
Greenlees K.J. | Clutton R.E. | Larsen C.T. | Eyre P.
The relative myocardial irritant properties of halothane, isoflurane, and pentobarbital were evaluated in chickens. Sixteen adult male broiler chickens were randomly assigned to 1 of 3 groups: group-1 chickens were anesthetized with pentobarbital (30 mg/kg, IV), group-2 chickens were anesthetized with halothane (end tidal halothane 1.2%), and group-3 chickens were anesthetized with isoflurane (end tidal isoflurane 2.1%). Birds in any 2 of the 3 treatment groups were tested on any 1 day. Local anesthesia was induced, and blood pressure, heart rate, ECG, and blood gas variables were measured before general anesthesia was induced. Positive-pressure ventilation with an inspired O2 fraction > 0.95 was adjusted to result in an end tidal CO2 concentration that reflected a PaCO2 similar to that obtained prior to anesthesia and ventilation. All measurements were repeated. The threshold for ventricular fibrillation in response to electrical stimulation of the heart was then determined for all birds. Effects of anesthesia on hemodynamic and blood gas variables were similar in all 3 groups. Compared with halothane or pentobarbital, isoflurane anesthesia resulted in a significantly (P < 0.05) lower threshold for electrical fibrillation of the heart.
Mostrar más [+] Menos [-]Factors influencing enhanced Salmonella typhimurium infection in Eimeria tenella-infected chickens.
1985
Baba E. | Fukata T. | Arakawa A.
Evaluation of the specificity of Pasteurella multocida somatic antigen-typing antisera prepared in chickens, using ribosome-lipopolysaccharide complexes as inocula.
1989
Rimler R.B. | Angus R.D. | Phillips M.
Purified lipopolysaccharides (LPS) from 16 serotypes of Pasteurella multocida were complexed with Aspergillus fumigatus ribosomes. The complexes were used as inocula to prepare antisera, in chickens, for somatic antigen typing by the gel diffusion precipitin test (GDPT). Antisera made against 15 of 16 LPS reacted with their respective specific heat-stable antigens in the GDPT and homologous LPS in the passive hemagglutination test. Antisera could not be made against serotype 15 LPS. Correlation was not observed between intensity of the precipitin reaction in the GDPT and titer to homologous LPS in the passive hemagglutination test. Most antisera cross-related with other heat-stable antigens of other serotypes in the GDPT. Many of these cross-reactions were eliminated by dilution. Cross-reactions that occurred in the GDPT with antisera made against LPS of serotypes 2, 5, 7 and 8 could not be eliminated by dilution.
Mostrar más [+] Menos [-]Effect of bursectomy on the pathogenesis of Marek's disease.
1980
Isogai H. | Fujimoto Y. | Okada K. | Ichijo K.
Viral matirx inclusion bodies in myocardium of lymphoid leukosis virus-infected chickens.
1985
Gilka F. | Spencer J.L.
Pathological changes on naturally occurring necrotic enteritis in chicken.
1997
Kim H.J. | Chung U.I. | Kang M.I.
Identification of Staphylococcus hyicus subsp hyicus of swine and poultry origin by API STAPH-IDENT system.
1994
Park C.K.
Pathogenicity, hemagglutinability and the effect of physicochemical agents on virus of rabbit hemorrhagic disease.
1990
Yoon I.J. | Jeon Y.S.
Mycoflora in broiler houses.
1984
Choi W.P. | Yeo S.G. | Lee H.J.
The present survey was undertaken to determine the mycoflora of broiler houses. Attempts were made to isolate and identify fungi in the dust, feed, litter and water from 21 broiler houses. A total of 166 isolates of fungi was identified as yeast spp. (44%), Aspergillus spp. (30.7%), Verticillium spp. (7.2%), Penicillium spp. (3.6%), Paecilomyces spp. (3.6%), Scopulariopsis spp. (3.0%), Cephalosporium spp. (3.0%), Chrysosporium spp. (2.4%), Cladosporium spp. (1.8%) and Absidia spp. (0.6%).
Mostrar más [+] Menos [-]Studies on pathogenicity of Escherichia coli isolated from chickens: Correlation between in vitro Congo-red binding properties and in vivo virulence in avian Escherichia coli.
1991
Woo Y.K. | Kim K.S. | Kim B.H.
