Significance and Control of Attack by the Ambrosia Beetle Trypodendron lineatum (Oliv.) (Col. Scolytidae) in Argyllshire Forests     

BLETCHLY  J. D.; WHITE  M. G. 《Forestry》1962,34(2):139-163

Following damage to saw-logs in Argyllshire forests methodsof controlling attack by the ambrosia (pinhole borer) beetleTrypodendron lineatum (Oliv.) have been studied. Attack beginsin April, reaches a peak in May but then declines rapidly, beingof negligible importance after August. Trees felled betweenNovember and January are more susceptible but few logs leftat stump are attacked. Damage is much more widespread in logsstacked in the forest or at the milt. Good protection can be provided economically by spraying stackedtimber with an emulsion of 0?75 per cent, gamma BHC. A freshtreatment is advisable if logs are restacked or the outsideones removed from a stack between April and August. These treatments,combined with rapid extraction and conversion of logs duringthe summer, should reduce the incidence of damage. Suspensionof felling during this period appears unjustified if these measuresare followed; moreover, freshly felled timber is less susceptibleto attack. Although the Lymexylid beetle Hylecoetus dermestoides L. isalso widespread, damage is less apparent due to the absenceof associated staining. The control measures recommended forTrypodendron appear suitable for Hylecoetus.  相似文献   

Canopy Closure in Sitka Spruce - the Relationship between Crown Width and Stem Diameter for Open Grown Trees     

TABBUSH  PAUL M.; WHITE  IAN M. S. 《Forestry》1988,61(1):23-27

Crown width (CW) and breast height diameter (D) were measuredfor 73 open grown Sitka spruce trees. A highly significant linearrelationship was found between these two characteristics, withmore variation at large values of D. After applying weightingto compensate for this and eliminating the largest tree whichdid not follow the main trend, the equation CW=188. 30 + 15.27Dand D = 0.05865 CW - 8.31 were fitted where CW and D are expressedin centimetres. A comparison is made with equations derivedby other workers. The relationship may be used to predict the time of canopy closurefrom a knowledge of the development of D with age for a givenstand, after defining canopy closure in terms of mean crownwidth and spacing, or mean crown area and the available growingspace.  相似文献   

Molybdenum poisoning in feedlot cattle     

DA SWAN  JH CREEPER  CL WHITE  M. RIDINGS  GM SMITH  ND COSTA 《Australian veterinary journal》1998,76(5):345-349

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Intracapsular Prostatic Omentalization: A New Technique for Management of Prostatic Abscesses in Dogs     

RICHARD A. S. WHITE BVetMed  PhD  DVR  FRCVS  Diplomate ACVS  Diplomate ECVS  JOHN M. WILLIAMS MA  VetMB  FRCVS 《Veterinary surgery : VS》1995,24(5):390-395

Twenty dogs with abscessation of the prostate gland were treated by celiotomy, drainage, and digital exploration of the gland through bilateral capsulectomy wounds. Omentum was introduced through the capsulectomy wounds and packed into the abscess cavities around the prostatic urethra. Most dogs were discharged from the hospital within 48 hours of the surgery. Long-term resolution of the problem (no recurrence within 12 months) was achieved in 19 dogs. One dog had recurrent abscessation that was managed by the placement of dependant Penrose drains. Temporary tube cystostomy was performed postoperatively in one dog for the management of transient dysuria. One dog with septic peritonitis resulting from preoperative abscess rupture was managed by concurrent open peritoneal drainage. Intracapsular prostatic omentalization was a simple and effective means of managing prostatic abscessation with minimal requirement for postoperative hospitalization of the patient. The frequency of serious complications, including postoperative urinary incontinence, was low.  相似文献   

Suspensory Apparatus Prosthesis in the Horse Part 1: In Vitro Mechanical Properties     

MICHAEL D. MAJOR DVM  MS    BARRIE D. GRANT DVM  MS  Dipiomate ACVS    KARL K. WHITE DVM  Dipiomate ACVS    MARC H. RATZLAFF DVM  PhD    ANTHONY M. GALLINA DVM  PhD  GREGORY R. CRAWLEY DVM  MS  Dipiomate ACVS 《Veterinary surgery : VS》1992,21(2):121-125

Mechanical properties of equine suspensory apparatus preparations and three braided synthetic prostheses were evaluated in vitro. Force versus displacement plots and failure modes were recorded from single load-to-failure testing in 18 cadaver limbs before and after replacement of each suspensory apparatus with a prosthesis. Mean load at failure, energy to failure, and stiffness values of polytetrafluoroethylene (PTFE) prostheses were lower than those of the suspensory apparatus and aramid prosthesis. The PTFE prosthesis failed by elongation or rupture of the prosthesis. Mechanical properties of the aramid prosthesis with collar augmentation were not significantly different from the suspensory apparatus. The main site of failure in both aramid prostheses was at the screw fixation to bone.  相似文献   

Natural and experimental cases of poisoning of calves by flaking lead paint     

WHITE EG  COTCHIN E 《The British veterinary journal》1947,103(3):75-91

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Endoscopic management of a cystic naso-lacrimal obstruction in a dog   总被引：1，自引：0，他引：1  

R. A. S. WHITE  M. E. HERRTAGE  S. B. WATKINS 《The Journal of small animal practice》1984,25(12):729-735

A young adult Dachshund was presented with a cystic obstruction of the nasolacrimal duct causing maxillo-turbinate destruction but no epiphora. The lesion was demonstrated by dacryocystorhinography and identified on nasal endoscopy which also permitted the successful creation of a permanent fistula without resort to invasive surgery. Histological examination of the cystic wall of the duct showed normal turbinate structures replaced by chronic inflammatory tissue.  相似文献   

Fin and skin necrosis of cultivated Dover sole Solea solea (L.)   总被引：2，自引：0，他引：2  

A. H. McVICAR  P. G. WHITE 《Journal of fish diseases》1979,2(6):557-562

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BOVINE NASAL GRANULOMA IN VICTORIA—A SEARCH FOR THE CAUSATIVE ALLERGENS     

D. H. PEMBERTON B.V.Sc.  W. E. WHITE M.V.Sc.  Ph.D. 《Australian veterinary journal》1976,52(4):155-157

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Detection of an Amplasma marginale antibody complex formed in vivo     

RISTIC M  WHITE FH 《Science (New York, N.Y.)》1960,131(3405):987-988

A naturally occurring anaplasma-antibody complex was detected by exposing erythrocytes of infected cattle to fluorescein-labeled bovine antiglobulin. This technique revealed not only the classical marginal bodies but also the initial Anaplasma bodies in the erythrocytes of acutely infected animals. Singly occurring initial bodies were observed in the erythrocytes of healthy carriers.  相似文献