Isolation of oxfendazole resistant Cooperia oncophora in cattle     

Jackson RA  Townsend KG  Pyke C  Lance DM 《New Zealand veterinary journal》1987,35(11):187-189

A field strain of Cooperia oncophora resistant to oxfendazole was isolated from a commercial cattle rearing property in Waikato, New Zealand. Resistance to oxfendazole was assessed by means of a faecal egg count depression test and an in vitro egg hatch test. This is the first documented case of anthelmintic resistance in Cooperia spp. and the first report of anthelmintic resistance in cattle in New Zealand.  相似文献   

An unusual manifestation of holoprosencephaly in a pig          下载免费PDF全文

Holmes CJ  Partlow GD  Fisher KR 《The Canadian veterinary journal. La revue veterinaire canadienne》1987,28(12):770-771

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Livestock Production and Veterinary Services in China - Keeping up with the Fourth Modernization          下载免费PDF全文

Brandenburg AC 《The Canadian veterinary journal. La revue veterinaire canadienne》1987,28(8):475-479

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Langford Laboratories - Biotechnology out of the Basement          下载免费PDF全文

Povey RC 《The Canadian veterinary journal. La revue veterinaire canadienne》1987,28(8):469-472

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Management of reproduction of sheep          下载免费PDF全文

Buckrell BC 《The Canadian veterinary journal. La revue veterinaire canadienne》1987,28(6):374-377

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Abdominal situs inversus in a sheep     

Larsen C  Kirk EJ 《New Zealand veterinary journal》1987,35(7):113-114

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The effects of artificially-induced fly-strike on food intake and liveweight gain in sheep     

Heath AC  Bishop DM  Tenquist JD 《New Zealand veterinary journal》1987,35(4):50-52

A single, artificially-induced fly-strike with Lucilia sericata larvae was associated with a rapid (decline in food intake in sheep, with a consequent reduction in liveweight. Loss of weight ranged from 0.5 to 5.5 kg over four to six days and recovery to pre-infestation liveweight took three to 36 days. Pair-fed, uninfested partners of these sheep also showed a reduction in liveweight, whereas uninfested sheep in some experiments fed ad libitum showed either little change or a gain in liveweight over the same period. In general, maggot infested sheep took less time to regain weight than did their pair-fed partners although the weight lost as a proportion of initial weight was similar in both groups. Loss of appetite alone would appear to account for these events.  相似文献   

Dyserythropoeisis, sideroblasts/siderocytes and hemoglobin crystallization in a dog     

Canfield PJ  Watson AD  Ratcliffe RC 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》1987,16(1):21-28

Dyserythropoiesis characterized by enhanced intramedullary destruction, pathologic sideroblasts and siderocytes, and hemoglobin crystallization was detected in a female Cocker Spaniel presented for poor exercise tolerance. Examination of peripheral blood revealed intraerythrocytic crystals, granulation of erythrocytes, nucleated erythroid cells, reticulocytosis and marked variation in erythrocyte morphology in the absence of anemia. Bone marrow examination revealed sideroblasts, a low M:E ratio and evidence of enhanced intramedullary destruction of erythroid cells. Electron microscopy of peripheral blood and bone marrow confirmed pathologic mitochondrial iron accumulation in erythroid cells and the presence of intraerythrocytic hemoglobin crystals. A cause for the hematologic changes was not identified. After the animal became clinically normal, siderocytes disappeared from peripheral blood but intraerythrocytic crystals and reticulocytosis persisted.  相似文献   

Effects of heartworm and intestinal parasitic infections on hematology and peripheral lymph node cytology in louisiana dogs     

Gossett KA  Root CR  Cleghorn B  Church GE  Turk JR  Turk MA 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》1987,16(4):97-101

Hookworm infected dogs had higher blood basophil counts than hookworm negative dogs. Dogs with occult heartworm infection (i.e., without microfilaremia) had higher blood neutrophil counts than heartworm negative dogs. The percentage of eosinophils in peripheral lymph nodes was higher in heartworm infected, microfilaremic dogs than in both occult infected dogs and heartworm negative dogs. Heartworm or intestinal parasitic infection had no other significant effects on hematologic parameters or peripheral lymph node cytology.  相似文献   

Potential effects of glucocorticoids on serum iron concentration in dogs     

Harvey JW  Levin DE  Chen CL 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》1987,16(2):46-50

Prednisone was give norally(2mg/kg b.i.d.) to seven healthy mixed breed dogs for 3 consecutive days. Serum iron concentration increased significantly (p < 0.05) from 142 +/- 26 micro g/dl (mean +/- SE) before a drug adminis- tration on Day 0 to a maximum of 307 +/- 47 micro g/dl on Day 2, and returned to the Day 0 value by Day 5. Mean total iron binding capacity did not vary more than 25% from the Day 0 value during the 9 day long study. The percent saturation of transferrin with iron increased from 33 +/- 6% on Day 0 to a maximum of 71 +/- 9% on Day 3. This determination had decreased to 34 +/- 3% on Day 5. No statistically significant changes occurred in these parameters studied in six control dogs that were not given the drug. To determine whether serum iron concentration might be correlated with endogenous serum cortisol concentration, these tests were determined in serum collected from nine dogs at 7 a.m., 3 p.m., and 11 p.m. each day for 3 consecutive days. Serum iron concentration was lower at 7 a.m. (147 +/- 9 micro g/dl) than at 3 p.m. (164 +/- 9 micro g/dl) or 11 p.m. (159 +/- 10 micro g/dl). Likewise serum cortisol was lower at 7 a.m. (1.29 +/- 0.18 micro g/dl) than at 3 p.m. (1.49 +/- 0.19 micro g/dl) or 11 p.m. (1.51 +/- 0.22 micro g/dl). There was a significant positive linear correlation between serum iron and serum cortisol concentrations when they were compared using mean values for each dog. From these studies, it appears that exogenously administered glucocorticoids and endogenous increases in serum cortisol concentrations may result in increased serum iron concentrations in dogs.  相似文献