CORRESPONDENCE     

J. S. Brockman 《Grass and Forage Science》1967,22(3):221-221

  相似文献   

Glucose-glucagon relationships in adult sheep.   总被引：1，自引：0，他引：1       下载免费PDF全文

R P Brockman 《Canadian journal of veterinary research》1977,41(1):95-97

Glucose-glucagon relationships were examined in adult sheep. Hyperglycemia was induced by infusing glucose at 120 mg/hr/kg body weight. Hypoglycemia was obtained by infusing insulin at 1.2 U/hr. In several experiments glucose at 40 mg/hr/kg was infused with insulin to obtain hyperinsulinemia without hypoglycemia to distinguish glucose-insulin effects. Glucagon concentrations decreased during hyperglycemia and increased during hypoglycemia. This study indicates that glucose-glucagon interactions may be important in regulation of glucagon secretion in sheep.  相似文献   

Neuroblastoma in the dog   总被引：1，自引：0，他引：1  

C. E. Payne-Johnson  D. J. Brockman 《The Journal of small animal practice》1992,33(8):395-398

A peripheral neuroblastoma is described in a two-year-old Japanese Akita with a vague illness and a palpable abdominal mass. Radiology confirmed the presence of a cranial abdominal mass which was determined to be inoperable at exploratory laparotomy. The tumour was believed to have originated in the adrenal glands. The problems of clinical and pathological diagnosis are discussed.  相似文献   

CT scanning of dogs with spontaneous pneumothorax     

Lipscomb V  Brockman D  Gregory S  Baines S  Lamb CR 《The Veterinary record》2004,154(11):344

  相似文献   

THE RELATIONSHIP BETWEEN TOTAL N INPUT AND YIELD OF CUT GRASS SWARDS   总被引：1，自引：1，他引：0  

J. S. Brockman 《Grass and Forage Science》1969,24(2):89-97

The response of clover-free grass swards to fertilizer N when cut repeatedly at grazing and silage stages of growth was measured in four experiments at North Wyke. There was variation between years in the yield obtained at a given fertilizer N rate (Fn) and this was attributable to differences in soil-N supply. By estimating soil-N supply from the N-yield of the non-fertilized plots (Zn), total N inputs (Tn) were assessed. Over a number of reported experiments it was found that grass-N yield (Gn) was related to Tn by the equation Gn=0.57 Tn, where Tn=Fn+l.7 Zn. The level of grass-DM yield depended on stage of growth at cutting, as well as on total N supply. These results, and others examined from the literature, suggest that while total N input is the main determinant of grass-DM yield, account must be taken of the time available, before defoliation, for the N taken up to be utilized in DM production. The use of Tn values has allowed the collating of N responses obtained over a range of sites, seasons and workers.  相似文献   

Roles for Insulin and Glucagon in the Development of Ruminant Ketosis — A Review          下载免费PDF全文

R. P. Brockman 《The Canadian veterinary journal. La revue veterinaire canadienne》1979,20(5):121-126

Ketonemia can be a physiological response to a reduction in dietary intake. It also may occur when energy demands exceed the energy intake. Normally, alimentary ketogenesis is the major source of ketone bodies in ruminants. During ketonemia there is increased hepatic ketone body production. During physiological ketosis, the mobilization of free fatty acids is inadequate to support a high rate of hepatic ketogenesis. However, during clinical ketosis, the hormonal status (low insulin, high glucagon/insulin ratio) in combination with hypoglycemia promotes excessive lipid mobilization and a greater hepatic removal of fatty acids and switches the liver to a higher rate of ketogenesis. The low insulin, furthermore, can impair maximal ketone body utilization, thus exacerbating the hyperketonemia.  相似文献   

Body cavity lipomas in six dogs     

Mayhew PD  Brockman DJ 《The Journal of small animal practice》2002,43(4):177-181

Histologically confirmed lipomas were surgically removed from the thoracic or abdominal cavities of six dogs. Three dogs had a large intra-abdominal mass causing severe abdominal distension. Two dogs had a mass extending into the pelvic canal, compressing the colon and causing obstipation. One dog with an intrathoracic mass had a history of coughing and intermittent cyanosis. All dogs had complete resolution of signs after surgical resection of the tumour. Recurrence occurred in one dog with an abdominal lipoma, two years after the initial surgery. This recurrent lipoma was treated successfully by surgical resection.  相似文献   

Coccidia (Eimeria spp) of wild rabbits in southwestern Australia   总被引：1，自引：0，他引：1  

RP HOBBS  LE TWIGG 《Australian veterinary journal》1998,76(3):209-210

  相似文献   

Unusual congenital portosystemic communication resulting from persistence of the extrahepatic umbilical vein     

D. J. Brockman    D. C. Brown  D. E. Holt 《The Journal of small animal practice》1998,39(5):244-248

An unusual congenital portosystemic shunt was identified in one dog and two cats with clinical signs and laboratory evidence of hepatic dysfunction. In all the animals, the abnormal vessel arose from the portal system between the left medial and quadrate liver lobes and travelled within the falciform fat, exiting the abdomen through the caudal ventral left diaphragm. The intrathoracic course of these vessels was not established. The anatomical location of this anomalous vessel may have hindered attempts at ultrasonographic identification since it was not visualised before surgery in any of the animals. In addition, while the anatomical location of the vessel may facilitate rapid identification and surgical attenuation, it could predispose the vessel to trauma during the coeliotomy approach. It is hypothesised that this form of portosystemic communication results from failure of a portion of the left umbilical vein to degenerate during embryogenesis. This is in contrast to other forms of congenital extrahepatic portosystemic shunt that are presumed to be developmental errors resulting in an abnormal communication between the embryonic vitelline and cardinal venous systems. The prognosis for animals with the vascular anomaly reported here is probably similar to that for animals with other forms of congenital portosystemic shunt.  相似文献   

Variations in surgical technique for adrenalectomy with caudal vena cava venotomy in 19 dogs     

Rebekah C. Knight  Christopher R. Lamb  Daniel J. Brockman  Victoria J. Lipscomb 《Veterinary surgery : VS》2019,48(5):751-759

  相似文献