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A prototype 915-MHz microwave unit was designed to rewarm hypothermic piglets. Initial tests indicate that it is possible to rewarm piglets successfully from deep stages of hypothermia using 915-MHz microwaves. Rewarming did not cause any significant physiological changes in blood variables, nor did...
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Before suckling, 14 newborn piglets, weighing <1.25 kg, were dried, weighed, and their rectal temperatures recorded. Rectal temperatures were then reduced to 25 degrees C, to induce hypothermia, by placing the piglets in a 10 degrees C cooling unit. A microwave (MW) generator was programmed to re...
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Chicks housed at 16 degrees C were exposed to microwave or infrared heat. Microwave power density was 26, 13 or 10 mW/cmsuperscript 2. Chicks voluntarily demanded between 28 and 63% as much heat (min heat/hr) from the microwave source as from the infrared source at all power densities. There was no ...
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Serum concentrations of cortisol were monitored in four sows 100 days pregnant during and after cannulation through an ear vein and thereafter for 11.5 days. During this period, the sows were exposed to the following environmental temperatures: 2 days at 18 degrees C and 3 days at 2, 18 and 32 degre...
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A study was conducted to establish whether auditory stimulation in the form of pre-taped maternal vocalizations would influence initial feeding behaviour in newly hatched poults. For the purposes of the study control birds (Group C) were raised under simulated commercial conditions. Other birds were...
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The survival rates of pigs subjected to different farrowing management protocols were compared. 60 litters of YorkxLandrace piglets were either unattended at farrowing or were dried, had the umbilical cord tied, had oral and nasal cavities suctioned to clear mucus, received oxygen and received bovin...
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On day 105 of gestation 12 pregnant sows were given isoflupredone injection, corticotropin infusion or saline infusion. Sow blood cortisol concentration increased (P<0.05) in response to corticotropin but not to isoflupredone. Blood glucose concentration remained constant in all groups. Body weig...
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In this study, the amount of nursing synchronisation was quantified, the dependence of the degree of synchronisation on the spatial distance between sows was examined, and the effect of nursing vocalisation playback on nursing frequency and nursing synchronisation was assessed in a large commercial ...
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Purpose: A recent genome-wide scan revealed a major susceptibility locus for idiopathic generalized epilepsies (IGEs) in the chromosomal region 8p12 in 32 IGE families without members with juvenile myoclonic epilepsy (JME). This study explored the presence of an IGE locus in the chromosomal region 8...
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A recent genome-wide scan revealed suggestive evidence for two susceptibility loci for idiopathic generalized epilepsy (IGE) in the chromosomal regions 5p15 and 5q14–q22 in families with typical absence seizures. The present replication study tested the validity of the tentative IGE loci on chromo...
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A previous study of 34 nuclear pedigrees segregating juvenile myoclonic epilepsy (JME) gave significant evidence of linkage with heterogeneity to marker loci on chromosome 15q13-14 close to the candidate gene CHRNA7 (Hum. Mol. Genet. 6 (1997) 1329). The aim of this work was to further evaluate the p...
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Genetic factors play a major role in the aetiology of idiopathic generalised epilepsies (IGEs). The present genome scan was designed to identify susceptibility loci that predispose to a spectrum of common IGE syndromes. Our collaborative study included 130 IGE-multiplex families ascertained through ...
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Eight, pregnant, primiparous sows received i.v. infusions of TRH (5 micro g/kg; TRH group) or physiological saline (0.9% NaCl; control group) from day 105 of gestation until farrowing. The plasma concentrations of thyroxine and triiodothyronine increased in sows treated with TRH. There were no diffe...
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The factors (farm type descriptions) obtained from a previous factor analysis study were analysed using regression with prevalence estimates of enzootic pneumonia on 69 pig farms. Farms were divided on enzootic pneumonia prevalence greater or less than 10%. Multiple logistic regression analysis of t...