Deaths in captive eels (Anguila reinhardtii) due to Photobacterium (Vibrio) damsela   总被引：1，自引：0，他引：1  

PJ KETTERER  LE EAVES 《Australian veterinary journal》1992,69(8):203-204

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Aspects of reproduction in female Bos indicus cattle: a review     

PJ CHENOWETH 《Australian veterinary journal》1994,71(12):422-426

SUMMARY Differences occur between female Bos indicus and Bos taurus cattle in various aspects of reproductive physiology and behaviour. These may be associated with different natural and human selection pressures, compounded by strong genotype-environment interactions. B indicus cattle are better adapted for tropical environments (despite overall poor cattle reproductive rates in these regions) which tend to be more stressful for B taurus genotypes. Conversely, B taurus cattle generally show superior reproductive and productive traits under more favoured, temperate conditions. Despite genotype-environment effects, B indicus females are generally considered to take longer to achieve puberty and to have longer gestation lengths, exhibit prolonged postpartum anoestrus, show greater seasonality of reproductive traits (tending to be long-day breeders), display a shorter, less overt oestrus as well as less tendency to allow riding behaviour by subordinate females. Some groups appear to have increased losses both during pregnancy and in the neonatal period. On the positive side, B indicus females respond well to managerial and nutritional interventions, tend to have greater reproductive longevity and they generally exhibit strong maternal traits. Culling of infertile females and selection for greater male scrotal circumference and sex-drive, in conjunction with the use of target weights, body condition scoring and weaning stratagems can improve reproductive rates in B indicus females.  相似文献   

An attempt to prevent acute toxoplasmosis in macropods by vaccination with Hammondia hammondi     

GL REDDACLIFF  SJ PARKER  JP DUBEY  PJ NICHOLLS  AM JOHNSON  DW COOPER 《Australian veterinary journal》1993,70(1):33-35

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In-vitro activity of ceftiofur against Australian isolates of the family Pasteurellaceae associated with respiratory disease in cattle and pigs     

PJ BLACKALL  JL PAHOFF  CP STEPHENS  FM DARVILL 《Australian veterinary journal》1996,74(1):71-71

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Prickly paddy melon (Cucumis myriocarpus) poisoning of cattle     

RA McKENZIE  RD NEWMAN †  AC RAYNER †  PJ DUNSTER 《Australian veterinary journal》1988,65(6):167-170

Twenty-six Hereford heifers died after eating mostly ripe fruit of Cucumis myriocarpus growing in a fallowed cultivation paddock. Four affected cattle were dehydrated and apparently had abdominal pain. Necropsy of three revealed intense congestion with haemorrhage of the alimentary tract, numerous C. myriocarpus seeds in ruminal contents, pulmonary congestion and oedema and, in two, swollen livers. Midzonal swelling and vacuolation of hepatocytes occurred in these two. C. myriocarpus fruit (83% by weight ripe) were dosed to two calves at 60 g wet weight/kg live weight. Both collapsed with tachycardia and dyspnoea and died within 6 h. Their packed cell volumes just before death had increased to 0.7. They had hydropic degeneration and necrosis of the ruminal mucosa, intense congestion and oedema of the rumen, abomasum and intestines, swollen and vacuolated hepatocytes and foci of myocardial degeneration and necrosis. Two other calves were dosed daily with 20 g fruit/kg for three days, then 40 g/kg for three days. One calf received a further 40 g/kg next day. Both calves developed persistent diarrhoea and neutrophilia, and their plasma gamma glutamyltransferase and bilirubin concentrations increased. Necropsy revealed necrosis and oedema of the rumen and swollen degenerate hepatocytes.  相似文献   

Further comparison of adjuvants for an inactivated infectious coryza vaccine   总被引：2，自引：0，他引：2  

P J Blackall 《Avian diseases》1988,32(4):831-835

Inactivated infectious coryza vaccines containing different adjuvants were administered to 6-week-old chickens as a single dose containing 10(8) colony-forming units of Haemophilus paragallinarum HP31. After 3 weeks, all chickens were challenged by intrasinus inoculation of HP31. Two vaccines, one containing an aluminum-hydroxide adjuvant and the other a combined aluminum-hydroxide + avridine (a lipoidal amine) adjuvant, were effective. The three remaining vaccines--containing mineral-oil double-emulsion, avridine, or a combination of mineral-oil double-emulsion + avridine--gave much lower levels of protection. No adverse reactions were seen with any vaccine.  相似文献   

Edward John McBarron OAM     

PJ Mylrea 《Australian veterinary journal》1992,69(6):147-147

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Whole-cell protein profiles of Haemophilus paragallinarum as detected by polyacrylamide gel electrophoresis   总被引：1，自引：0，他引：1  

P J Blackall  R Yamamoto 《Avian diseases》1989,33(1):168-173

The soluble whole-cell protein profiles of 15 isolates of Haemophilus paragallinarum were examined using standardized sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The patterns were reproducible and the isolates were similar overall. Despite this similarity, two protein profile types were recognized.  相似文献   

Comparison of inoculation regimes for the experimental production of swine erysipelas arthritis: II Serological findings in a gel diffusion precipitin test and enzyme-linked immunosorbent assay     

GJ EAMENS  JC CHIN  PJ NICHOLLS 《Australian veterinary journal》1989,66(7):216-220

The serological response of pigs to Erysipelothrix rhusiopathiae inoculation was monitored by a gel diffusion precipitin test (GDPT) using a crude, serotype-specific, autoclaved antigen and an enzyme-linked immunosorbent assay (ELISA) using a heat-extracted, alcohol precipitated and molecular seived antigen previously shown to react with serum from pigs infected with serotypes 1 or 2. All pigs receiving 3 or 5 weekly intravenous inoculations of either a highly virulent (VRS 229) or a lowly virulent isolate (VRS 252) produced GDPT-reactive antibody within 3 weeks, but only 44% were still reactive at 8 to 9.5 weeks. The ELISA response was significantly higher in pigs inoculated with the highly virulent strain, and was similar in pigs receiving 3 or 5 doses of either strain. In a dose-response trial, after 3 doses of VRS 229, GDPT reactivity occurred earlier and was stronger in pigs given higher doses of E. rhusiopathiae, but the response peaked 3 to 5 weeks after the start of challenge and was short lived. GDPT reactivity correlated with dose, but not with the severity of arthritis. The ELISA demonstrated specific IgG antibody was present by 2 weeks, and persisted to at least 11 weeks. The ELISA reactivity was significantly higher in pigs with arthritis than in pigs that received low doses and were not arthritic. Within groups of pigs with arthritis a significant, dose dependent, linear ELISA response developed but did not correlate with the presence or degree of arthritis at slaughter. Non-arthritic pigs had similar low ELISA responses to uninoculated controls.  相似文献   

Soil and agronomic factors associated with cadmium accumulations in kidneys of grazing sheep     

PW MORCOMBE  DS PETTERSON  PJ ROSS†  JR EDWARDS 《Australian veterinary journal》1994,71(12):404-406

SUMMARY Mean concentration of cadmium (Cd) in kidneys of hogget sheep from 67 flocks grazing in the Agricultural Region of Western Australia was tested for association with soil, pastoral, climatic and nutritional factors. Hoggets grazing pastures on acidic soils and soils with a sandy-textured surface had higher Cd concentrations in kidneys than hoggets grazing pastures on more alkaline soils or soils with a clay-textured surface. Application of more than 100 kg of phosphatic fertiliser during the past 3 years to loamy soils was also associated with greater Cd concentration in kidneys of the grazing animals.  相似文献