SUPPLEMENTARY FEEDING OF BEEF CATTLE IN THE HIGH RAINFALL ZONE OF SOUTHERN AUSTRALIA     

P. J. Bailey  B.Agr.Sc.  J. H. L. Morgan/sc>  M.Ru.Sc. A. H. Bishop  M.Agr.Sc. 《Australian veterinary journal》1972,48(5):304-309

  相似文献   

Succinylcholine chloride as a euthanatizing agent in dogs     

T Hicks  E M Bailey 《American journal of veterinary research》1978,39(7):1195-1197

In order to determine the efficacy of succinylcholine chloride as a euthanatizing agent, the possible situation encountered in mass euthanasia was recreated. While anesthetized or awake, sixteen 2-year-old Beagles of both sexes were subcutaneously injected with either 1.1 g or 11 mg of succinylcholine chloride/kg of body weight. Positive pressure respiration was given to 2 dogs, otherwise the treatment was allowed to run its course. Electrocardiogram, electroencephalogram, and impedance pneumogram recordings were obtained for time comparisons and for determination of the ultimate cause of death.  相似文献   

Epidemiology and chemical control of take-all on seminal and adventitious roots of wheat     

Bailey DJ  Paveley N  Pillinger C  Foulkes J  Spink J  Gilligan CA 《Phytopathology》2005,95(1):62-68

ABSTRACT Epidemiological modeling is used to examine the effect of silthiofam seed treatment on field epidemics of take-all in winter wheat. A simple compartmental model, including terms for primary infection, secondary infection, root production, and decay of inoculum, was fitted to data describing change in the number of diseased and susceptible roots per plant over thermal time obtained from replicated field trials. This produced a composite curve describing change in the proportion of diseased roots over time that increased monotonically to an initial plateau and then increased exponentially thereafter. The shape of this curve was consistent with consecutive phases of primary and secondary infection. The seed treatment reduced the proportion of diseased roots throughout both phases of the epidemic. However, analysis with the model detected a significant reduction in the rate of primary, but not secondary, infection. The potential for silthiofam to affect secondary infection from diseased seminal or adventitious roots was examined in further detail by extending the compartmental model and fitting to change in the number of diseased and susceptible seminal or adventitious roots. Rates of secondary infection from either source of infected roots were not affected. Seed treatment controlled primary infection of seminal roots from particulate inoculum but not secondary infection from either seminal or adventitious roots. The reduction in disease for silthiofam-treated plants observed following the secondary infection phase of the epidemic was not due to long-term activity of the chemical but to the manifestation of disease control early in the epidemic.  相似文献   

The effects of weaning beef calves in two stages on their behavior and growth rate     

Haley DB  Bailey DW  Stookey JM 《Journal of animal science》2005,83(9):2205-2214

Four trials were conducted to explore possible advantages of weaning beef calves in two stages compared with the traditional method of weaning by abrupt separation. In the two-stage treatment, calves were prevented from nursing their dam for a period (Stage 1) before their separation (Stage 2). Control calves nursed from their dams until they were separated. Calf weights and behavior were recorded before and after the separation of cows and calves. Following separation, calves weaned in two stages vocalized 96.6% less (P = 0.001) and spent 78.9% less time walking (P = 0.001), 23.0% more time eating (P = 0.001), and 24.1% more time resting (P = 0.001) than control calves. Compared with controls, two-stage calves had lower (P < 0.001) ADG when nursing was deprived (Stage 1), but greater (P < 0.001) ADG during the 7 d following separation. In Trial 3, calves weaned by the two-stage method had greater (P = 0.05) growth rates than control calves for 7 wk after separation, but no treatment effects on ADG were detected (P > 0.38) in Trials 1 and 2. Over the entire study period (before and after separation), ADG did not differ (P > 0.10) for both treatments. In Trial 4, calves weaned in two stages walked 1.3 km/d more (P < 0.05) during the 4-d period when nursing was prevented (Stage 1) and 5.8 km/d less (P < 0.05) during the 4-d period after separation than controls. Differences between treatments were the greatest in the 2 d after separation. On the first day after separation, two-stage calves walked 5.2 +/- 0.5 km/ d, whereas control calves walked 16.7 +/- 3.1 km/d. Calves weaned in two stages were less distressed than calves weaned by the traditional method of abrupt separation based on behavioral data, but overall calf ADG did not differ for either method in this study. Nutritional management of two-stage weaned calves during the nursing-deprived period should be evaluated in future research because poor pasture conditions may have decreased gains by calves weaned by the two-stage method in this study.  相似文献   

Use of alkaline phosphatase staining to differentiate canine osteosarcoma from other vimentin-positive tumors     

Barger A  Graca R  Bailey K  Messick J  de Lorimier LP  Fan T  Hoffmann W 《Veterinary pathology》2005,42(2):161-165

Aspiration of lytic bone lesions is an excellent diagnostic test in the initial evaluation of primary bone neoplasia. However, cytologically, it can be difficult to differentiate osteosarcoma (OSA) from other bone neoplasms, including fibrosarcoma, chondrosarcoma, synovial cell sarcoma, and plasma cell myeloma. The purpose of this study is to determine the sensitivity and specificity of alkaline phosphatase (ALP) staining to differentiate OSA from other tumors that express vimentin by immunocytochemistry or immunohistochemistry. ALP is a hydrolytic enzyme present in multiple tissues including liver, kidney, intestine, placenta, and bone. Hypothetically, neoplasms actively producing bone should be specifically positive for ALP staining. Unstained, cytologic specimens were incubated for 8-10 minutes with nitroblue tetrazolium chloride/5-bromo-4-chloro-3-indolyl phosphate toluidine salt-phosphatase substrate. A positive reaction stains the membrane of the cells gray to black. Samples were counterstained with a Romanowsky's stain to determine whether the sample was of representative cellularity. A total of 61 vimentin-positive neoplasms have been evaluated and confirmed histopathologically. Tumors that expressed vimentin and were positive for ALP included 33 OSAs, one multi-lobular tumor of bone, one amelanotic melanoma, and one chondrosarcoma. Tumors that expressed vimentin and were negative for ALP included chondrosarcomas (three of four), multiple fibrosarcomas, and multiple synovial cell sarcomas. The sensitivity is 100%, and the specificity is 89%. In conclusion, ALP appears to be a highly sensitive and fairly specific marker in the diagnosis of OSA.  相似文献   

THE USE OF DEXAMETHASONE TRIMETHYLACETATE TO ADVANCE PARTURITION IN DAIRY COWS     

L. F. Bailey  Ph.D.  M. W. McLennan    B.V.Sc.  M.Ss. †  D. M. McLean    B.Rur.Sc.  Patricia R.  Hartford  M.R.C.V.S.‡ Golda L.  Munro  B.Sc. 《Australian veterinary journal》1973,49(12):567-573

  相似文献   

Function in cows with particular reference to the clearance of silicic acid     

C B Bailey 《Research in veterinary science》1970,11(6):533-539

  相似文献   

Depressed potential for interleukin-2 production following early weaning of piglets.     

M Bailey  C J Clarke  A D Wilson  N A Williams  C R Stokes 《Veterinary immunology and immunopathology》1992,34(3-4):197-207

Spleen cells, but not mesenteric lymph node cells, from 3-week-old piglets abruptly weaned onto a soya-based diet, produced less interleukin-2 (IL-2) following non-specific activation with concanavalin A (Con A) than did cells from age- and litter-matched, unweaned controls. In contrast, the ability to express receptors for IL-2 was only marginally reduced. The effect on IL-2 production was most marked in animals weaned for as little as 24-48 h. Variation within groups increased with time after weaning, indicating differences between individuals in the longer-term effects of weaning. This finding may be due to endogenous production of steroids resulting in generalised impaired immune function or to retention of cells within intestinal sites owing to an active local immune response.  相似文献   

Binding of Salmonella strains to immobilized intestinal mucosal preparations from broiler chickens.     

S E Craven  N A Cox  J S Bailey  L C Blankenship 《Avian diseases》1992,36(2):296-303

The binding kinetics of radiolabeled Salmonella california 1989/O (mannose-sensitive hemagglutinin-positive [MSHA+]) to immobilized mucus or enterocytes isolated from broiler ceca and inhibition of binding by D-mannose and sodium metaperiodate were characteristic of adherence of mannose-sensitive type 1 fimbriae of bacteria to eukaryotic mannose-containing receptors. Binding by radiolabeled strains 1989/O (in the presence of D-mannose) and S. typhimurium S 7471 N (MSHA-, non-fimbriated) indicated non-specific binding that was characterized by less binding to enterocytes and mucus and lack of inhibition by carbohydrates or prior treatment with sodium metaperiodate. Inhibition of non-specific binding to enterocytes by pretreatment with various enzymes or by the presence of tetramethylurea or p-nitrophenol (known to disrupt hydrophobic interactions) indicate involvement of multiple sites and hydrophobic bonding. Strain-specific outer-membrane preparations inhibited non-specific binding to a greater extent than did lipopolysaccharide, Escherichia coli outer-membrane preparations, or bovine serum albumin.  相似文献   

Evaluation of hemostatic analytes after use of hypertonic saline solution combined with colloids for resuscitation of dogs with hypovolemia.     

D L Zoran  A E Jergens  D H Riedesel  G S Johnson  T B Bailey  S D Martin 《American journal of veterinary research》1992,53(10):1791-1796

The effects of hypertonic saline solution (HTSS) combined with colloids on hemostatic analytes were studied in 15 dogs. The analytes evaluated included platelet counts, one-stage prothrombin time, activated partial thromboplastin time, von Willebrand's factor antigen (vWf:Ag), and buccal mucosa bleeding times. The dogs were anesthetized, and jugular phlebotomy was used to induced hypovolemia (mean arterial blood pressure = 50 mm of Hg). Treatment dogs (n = 12) were resuscitated by infusion (6 ml/kg of body weight) of 1 of 3 solutions: HTSS combined with 6% dextran 70, 6% hetastarch, or 10% pentastarch. The control dogs (n = 3) were autotransfused. Hemostatic analytes were evaluated prior to induction of hypovolemia (baseline) and then after resuscitation (after 30 minutes of sustained hypovolemia) at 0.25, 0.5, 1, 6 and 24 hours. All treatment dogs responded rapidly and dramatically to resuscitation with hypertonic solutions. Clinically apparent hemostatic defects (epistaxis, petechiae, hematoma) were not observed in any dog. All coagulation variables evaluated, with the exception of vWf:Ag, remained within reference ranges over the 24-hour period. The vWf:Ag values were not statistically different than values from control dogs, and actual values were only slightly lower than reference ranges. Significant (P < or = 0.04) differences were detected for one-stage prothrombin time, but did not exceed reference ranges. The results of this study suggested that small volume HTSS/colloid solutions do not cause significant alterations in hemostatic analytes and should be considered for initial treatment of hypovolemic or hemorrhagic shock.  相似文献