The distribution and prevalence of Theileria buffeli in cattle in Queensland     

NP STEWART  NF STANDFAST†  FC BALDOCK‡  DJ REID  AJ de  VOS† 《Australian veterinary journal》1992,69(3):59-61

The distribution and prevalence of Thelleria buffeli in Queensland cattle were investigated using serum samples and blood films collected primarily for brucellosis surveillance and tick fever diagnosis. Serums from 8654 cattle from 357 farms throughout Queensland were examined by an indirect fluorescent antibody test for antibody to T buffeli. In addition, 347 peripheral blood films collected from 147 farms in south-eastern Queensland were examined for piroplasms of T buffeli. The overall herd and animal prevalences for T buffeli were 75% and 41%, respectively. There was significant variation among regions in both herd and animal prevalences (P less than 0.001). Herd and animal prevalences were highest in the north and east decreasing westward. The results indicate that T buffeli is more widespread in Queensland than previously thought.  相似文献   

Confocal microscopy of the antigen-antibody reaction site in nematode larvae     

DJ MCGILLIVERY  RE MORTON  WK YONG  GG RIFFKIN  C. JOHNSON  B. ADLER 《Australian veterinary journal》1992,69(2):41-42

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Use of High Oleic Corn in Catfish Feeds     

Shozo H.  Sugiura Richard T.  Lovell 《Journal of the World Aquaculture Society》1996,27(1):74-81

High oleic corn is a genetic variant that contains more protein, lipid, and oleic acid and less linoleic acid than regular corn. A study was conducted to compare weight gain and feed conversion of year-1 and year-3 channel catfish Ietalurus punctatus , and processing yield, body composition and frozen storage stability of year-3 channel catfish fed high oleic corn and number 2 yellow (regular) corn in extruded production diets. A commercial-type diet formulated to contain 30% protein and made with regular corn served as a control. A second diet contained high oleic corn in place of regular corn on an equal (air-dry) weight basis. A third diet contained high oleic corn in substitution for regular corn and part of the soybean meal to limit protein content to 28%, which was equal to that of the control diet. The experimental diets were fed to year-1 channel catfish (average initial weight 5.1 g) in aquaria for 10 wk and to year-3 channel catfish (average initial weight 1.07 kg) in 0.04–ha ponds for 14 wk. Substitution of high oleic corn for regular corn on an equal (air-dry) weight basis provided significant gain ( P < 0.01) of year-1 channel catfish but not of year-3 fish. Use of high oleic corn diets designed to be equal in protein content did not affect weight gain of either group of fish. Replacement of regular corn with high oleic corn caused a significant ( P < 0.01) reduction in linoleic acid but no significant ( P > 0.20) increase in oleic acid in the flesh of fish. Proximate body composition, dressing yield, fillet yield, visceral fat, and liver weight were not significantly different among treatments. Sensory scores of fillets frozen for 3 and 6 mo were not significantly different among treatments. Peroxide value, thiobarbituric acid number and free fatty acids increased with frozen storage time but were not different among treatments.  相似文献   

Multi-drug resistant Escherichia coli with extended-spectrum β -lactamase activity and fluoroquinolone resistance isolated from clinical infections in dogs     

AL WARREN  KM TOWNSEND  T KING  S MOSS  D O''BOYLE  RM YATES  DJ TROTT 《Australian veterinary journal》2001,79(9):621-623

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Thyroid activity in relation to growth rate and body composition in four breeds of sheep     

R. Lovell  N. Gregory  D. Lister 《Veterinary research communications》1987,11(3):227-233

Four breeds of sheep, Hampshire, Southdown, Cheviot and Scottish Blackface, which differ in mature body size and body composition were intensively reared under an ad libitum or a restricted feeding regime. Thyroid activity was assessed at 13 weeks of age by the¹³¹I uptake method. Slaughter at 24 weeks (ad lib) or 32 weeks (restricted) was followed by carcass dissection. The anticipated differences in body type represented by the 4 breeds was confirmed in terms of size and fatness. The Hampshires had the highest growth rate (liveweight for age) and the lowest thyroid uptake, and the breed differences in thyroid activity were shown to be independent of liveweight. Thyroid activity was positively related to growth rate in the Hampshires and negatively related to growth rate in the 3 other breeds. No association could be found however between the thyroid activity and the proportionate growth of body fat or lean. None of these conclusions were affected by a mild restriction in feed intake.  相似文献   

Periodontal disease in free-ranging koalas (Phascolarctos cinereus) from the Mount Lofty Ranges,South Australia,and its association with koala retrovirus infection     

RG Butcher  LM Pettett  J Fabijan  E Ebrahimie  M Mohammadi-Dehcheshmeh  KN Speight  WSJ Boardman  PS Bird  DJ Trott 《Australian veterinary journal》2020,98(5):200-206

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Wild fallow deer (Dama dama) as definitive hosts of Fasciola hepatica (liver fluke) in alpine New South Wales     

DJ Jenkins  A Baker  M Porter  S Shamsi  DP Barton 《Australian veterinary journal》2020,98(11):546-549

To determine the extent to which wild deer are contributing in the transmission of Fasciola hepatica (liver fluke) livers from deer shot by hunters, farmers undertaking population control on their farms and vertebrate pest controllers were collected and frozen. The livers were later thawed, sliced and examined for the presence of adult flukes or evidence of past infection. Livers from 19 deer were examined (18 fallow [Dama dama] and one sambar [Rusa unicolor]). Seventeen of the fallow deer were animals collected on farms near Jindabyne, New South Wales. The remaining fallow deer was collected in the Australian Capital Territory and one sambar deer was collected in north-eastern Victoria. Nine of the 17 deer (53%) from the Jindabyne area were either infected with Fasciola hepatica (liver fluke) or had thickened bile ducts indicating past infection. Infection levels in the infected animals varied widely from 3 liver fluke to over 50 per liver. No sign of infection was present in the deer from the Australian Capital Territory or Victoria. Fallow deer are wide-spread in the Jindabyne area and their population is increasing. It is likely their contribution to the maintenance and distribution of F. hepatica to livestock in the Jindabyne area, and in other livestock rearing areas of south-eastern Australia, is important and increasing.  相似文献   

1-delta9-tetrahydrocannabinol: neurochemical and behavioral effects in the mouse   总被引：4，自引：0，他引：4  

D Holtzman  R A Lovell  J H Jaffe  D X Freedman 《Science (New York, N.Y.)》1969,163(874):1464-1467

Administration of pure 1-delta(9)-tetrahydrocannabinol to mice had the following dose-dependent nzeurochemical and behavioral effects: a slight but significant increase in concentrations of 5-hydroxytryptamine in whole brain; a decrease in concentration of norepinephrine in brain after administration of low doses and an increase after high doses; diminished spontaneous activity, mloderate hypothermnia, hypersetisitivity to tactile and auditory stimiuli, and ataxia after low doses; and sedation, pronounced hypothermia, and markedly diminished spon taneous activity and reactivity after high doses. The duration of the effects on body temperature and spontaneous activity correlated generally with the changes in brain amines. The characteristic changes in brain amines do not correspond exactly to those observed with other psychotropic drugs.  相似文献   

Explosive deep water basalt in the sumisu backarc rift     

Gill J  Torssander P  Lapierre H  Taylor R  Kaiho K  Koyama M  Kusakabe M  Aitchison J  Cisowski S  Dadey K  Fujioka K  Klaus A  Lovell M  Marsaglia K  Pezard P  Taylor B  Tazaki K 《Science (New York, N.Y.)》1990,248(4960):1214-1217

Eruption of 1-million-year-old tholeiitic basalt >1800 meters below sea level (>18 megapascals) in a backarc rift behind the Bonin arc produced a scoriaceous breccia similar in some respects to that formed during subaerial eruptions. Explosion of the magma is thought to have produced frothy agglutinate which welded either on the sea floor or in a submarine eruption column. The resulting 135-meter-thick pyroclastic deposit has paleomagnetic inclinations that are random at a scale of <2.5 meters. High magmatic water content, which is about 1.3 percent by weight after vesiculation, contributed to the explosivity.  相似文献   

Views of the cosmos     

Lovell B 《Science (New York, N.Y.)》1976,191(4232):1164-1165

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