Advances in Parasitology, Volume 11          下载免费PDF全文

M. Voge  J. R. Allen 《The Canadian veterinary journal. La revue veterinaire canadienne》1974,15(8):223

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Loss of vitamin E in stored cereals in relation to a myopathy of yearling cattle   总被引：2，自引：0，他引：2  

W M Allen  R Bradley  K Swannack  C R Barton  R Tyler 《The Veterinary record》1974,94(16):373-375

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Quantitative aspects of D- and L-tryptophan utilization by the young pig   总被引：1，自引：0，他引：1  

D H Baker  N K Allen  J Boomgaardt  G Graber  H W Norton 《Journal of animal science》1971,33(1):42-46

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Blood progesterone concentrations in pregnant and non-pregnant mares     

W E Allen  J C Hadley 《Equine veterinary journal》1974,6(2):87-93

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Further studies on the use of synthetic prostaglandin analogues for inducing luteolysis in mares   总被引：2，自引：0，他引：2  

W R Allen  F Stewart  M J Cooper  R C Crowhurst  D J Simpson  R J McEnery  R E Greenwood  P D Rossdale  S W Ricketts 《Equine veterinary journal》1974,6(1):31-35

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The basophil response in blood and bone marrow of tick-infested guinea pigs.          下载免费PDF全文

J R Gordon  J R Allen 《Canadian journal of veterinary research》1979,43(4):380-383

The concentrations of basophils in blood and bone marrow were monitored in guinea pigs subjected to primary and secondary infestations with larvae of Dermacentor andersoni. In these guinea pigs a significant increase of basophils was evident in peripheral blood. The response following the secondary infestation was more rapid and more intense than that following the primary infestation. Similar changes were also shown to occur in bone marrow. The possible significance of these responses in relation to acquired tick resistance in guinea pigs is discussed.  相似文献   

Botany. State transitions--a question of balance     

Allen JF 《Science (New York, N.Y.)》2003,299(5612):1530-1532

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Plasma fentanyl concentrations in awake cats and cats undergoing anesthesia and ovariohysterectomy using transdermal administration   总被引：1，自引：0，他引：1  

Egger CM  Glerum LE  Allen SW  Haag M 《Veterinary anaesthesia and analgesia》2003,30(4):229-236

Objective To measure the plasma fentanyl concentrations achieved over time with transdermal fentanyl patches in awake cats and cats undergoing anesthesia and ovariohysterectomy. Study design Randomized prospective experimental study. Animals Twenty‐four purpose‐bred cats. Methods Cats were randomly assigned to three groups for Part I of a larger concurrent study. Group P received only a 25 μg hour^?1 transdermal fentanyl patch. Group P/A received the patch and anesthesia. Group A received only anesthesia. After a minimum 1‐week washout period, the cats were randomly reassigned to two groups for Part II of the larger study. Group P/A/O received the patch, anesthesia and ovariohysterectomy. Group A/O received anesthesia and ovariohysterectomy. Patches were left in place for 72 hours and plasma samples were obtained for fentanyl analysis while the patches were in place, and for 8 hours after patch removal for cats in Group P, P/A, and P/A/O. Results The 25 μg hour^?1 transdermal fentanyl patches were well tolerated by the cats in this study (mean body weight of 3.0 kg) and no overt adverse effects were noted. Mean plasma fentanyl concentrations over time, mean plasma fentanyl concentrations at specific times (8, 25, 49, and 73 hours after patch placement), time to first detectable plasma fentanyl concentration, time to reach maximum plasma fentanyl concentration, maximum plasma fentanyl concentration, mean plasma fentanyl concentration from 8 to 73 hours, elimination half‐life, and total area under concentration (AUC) were not statistically different among the groups. Conclusions Halothane anesthesia and anesthesia/ovariohysterectomy did not significantly alter the plasma fentanyl concentrations achieved or pharmacokinetic parameters measured, when compared with awake cats. There was a high degree of individual variability observed both within and between groups of cats in parameters measured. Clinical significance The high degree of variability observed suggests that careful observation of cats with fentanyl patches in place is required to assess efficacy and any potential adverse effects. Anesthesia and anesthesia/ovariohysterectomy do not appear to alter plasma fentanyl concentrations achieved by placement of a 25 μg hour^?1 transdermal fentanyl patch when compared to cats not undergoing these procedures.  相似文献   

Toxicity of cyanogen to insects of stored grain     

Hooper JL  Desmarchelier JM  Ren Y  Allen SE 《Pest management science》2003,59(3):353-357

Range-finding studies on the toxicity of cyanogen to all stages of five species of stored product Coleoptera are reported. The species were Rhyzopertha dominica (F), Sitophilus granarius (L), Sitophilus Oryzae (L), Tribolium castaneum (Herbst), Tribolium confusum Jacquelin du Val and Ephestia cautella (Walker). Exposures for 24 h to cyanogen at 1.3 mg litre(-1) controlled all external stages. Control of internal stages of Sitophilus species was achieved by a 5-day exposure to initial concentrations between 13.7 and 27.4 mg litre(-1), whereas R. dominica was controlled at 13.7 mg litre(-1). Cyanogen showed similar toxicity to all tested external stages and, in this respect, was more similar to methyl bromide than to phosphine. Its toxicity to insects increased with both relative humidity and concentration of carbon dioxide. Cyanogen was toxic to insects whether applied as a gas or in an aqueous solution.  相似文献   

Microbial cross-contamination by airborne dispersion and contagion during defeathering of poultry     

Allen VM  Hinton MH  Tinker DB  Gibson C  Mead GC  Wathes CM 《British poultry science》2003,44(4):567-576

1. A readily identifiable strain of Escherichia coli K12 was used as a 'marker' organism to determine the sources, routes and patterns of microbial cross-contamination during mechanical defeathering of broiler chicken carcases. 2. Inoculation of scald water with the marker organism led to a relatively even pattern of carcase contamination during subsequent defeathering. Microbial cross-contamination was greater by this route of inoculation than by either surface inoculation of a 'seeder' carcase or oral inoculation of a live bird one day before slaughter. 3. Dispersal of the marker organism was strongly influenced by the mechanical action of the defeathering machines. Forward transmission of the marker occurred by aerosol or large airborne droplets and particulates such as feathers. Moving carcases through the defeathering machines when these were non-operational clearly reduced backward transmission of the marker. 4. Although microbial dispersal was unaffected by increasing the spacing between individual carcases or installing a water curtain at the entry and exit of the defeathering machines, shielding of carcases with aluminium baffles reduced counts of the marker organism from contaminated carcases by > 90%. 5. The results imply that microbial cross-contamination of broiler chicken carcases during defeathering occurs mainly via the airborne route, which could be contained by physical means.  相似文献