摘要:

Extract

ISSN:0048-0169    

DOI:10.1080/00480169.1979.34606

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

A field trial was conducted to compare the efficacy suspensions of betamethasone alcohol with dexamethasone trimethyl acetate on the induction of parturition before term in dairy cows. Initial treatment consisted of a subcutaneous injection of either 20 mg of betamethasone as a 10 mg/ml suspension(Group A), 30 mg of a 15 mg/ml suspension(Group B), or 20 mg of dexamethasone TMA(Group C). Those cows not calving within 10 days received a further 25 mg of betamethasone alcohol as a 2 mg/ml suspension. Data were collected from 619 cows on 41 farms. A marked difference between groups was noted in the proportion of animals calving to the initial injection (55.0, 61.4 and 26.4% calved to first injection in Groups A, B and C respectively); the differences between the groups receiving the betamethasone suspensions and the group receiving dexamethasone trimethyl acetate were highly significant (P<0.001). Of the animals treated 6.9, 3.6 and 10.2% failed to calve within 17 days of the initial treatment in Groups A, B and C respectively (Group B significantly different from Group C (0.02 > P> 0.01). Nevertheless, the response-time (mean of 7.5 days for all those calving to the first injection, and of 12.4 days for all those calving to the second injection) was not significantly different between the three treatment groups. Calf mortality over all treatments was 15.2% at birth and 26.6% by 4 days old. The incidence of metabolic disease was 5.9%, and 203% of cows had retained foetal membranes 24 hours after calving. No differences were observed between groups in the incidence of dystocia and cow mortality. Four cases of mastitis were recorded in Group A and 12 cases in Group C. No cases were recorded in Group B.

ISSN:0048-0169    

DOI:10.1080/00480169.1979.34607

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

Lambs grazing cobalt-deficient pastures and injected with hydroxocobalamine gained significantly more weight and excreted significantly less methylmalonic acid in the urine than untreated controls. Lambs with liver vitamin B12levels in the range 0.1–0.2ώg/g excreted less than 25 ώg of methylmalonic acid per ml of urine, whereas lambs with liver vitamin B12concentrations of less than 0.1 ώg/g excreted greater amounts. Lambs in both groups had serum vitamin B12concentrations less than 500 pg/ml.

ISSN:0048-0169    

DOI:10.1080/00480169.1979.34608

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

Groups of cows were selected from each of 22 herds which had recent evidence of leptospirosis or abortions. Blood and urine samples were collected from each animal on a number of occasions over a period of 11 months. Attempts were made to detect leptospiruria by microscopic and cultural procedures. Sera were examined by the semi-automated complement fixation test (CFT)and the microscopic agglutination test (MAT) usingLeptospira interrogansserotypespomona, hardjo, copenhageniandballumas antigens.

ISSN:0048-0169    

DOI:10.1080/00480169.1979.34609

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

The presence of serum haemoglobin reactive protein (HRP) as an indicator of infection has been suggested. The serum HRP levels in varying groups of cattle were measured. A reference range, established on 233 cattle, of 0–10ώmol/1 (as methaemoglobin binding capacity) was used. Forty eight of 104 cows that had recently aborted had raised serum HRP levels. Of 37 cows that had recently aborted, 26 had a leucocyte picture typical of bacterial infection and 18 of these had raised serum HRP levels. Eleven cows with a normal leucocyte picture had normal serum HRP levels. Seventeen cattle, with clinical infection and leucocyte pictures typical of bacterial infection, all had raised HRP levels. Of 133 cattle in which infection was considered a possibility by the attending veterinarian, 53 had an abnormal leucocyte picture with a raised serum HRP level. The mechanisms of a raised serum HRP level are unknown but, at the clinical level, its association with pyogenic infection make it a useful test in the confirmation of pyogenic infection.

ISSN:0048-0169    

DOI:10.1080/00480169.1979.34610

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

Extract

ISSN:0048-0169    

DOI:10.1080/00480169.1979.34612

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

Extract

ISSN:0048-0169    

DOI:10.1080/00480169.1979.34614

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

Extract

ISSN:0048-0169    

DOI:10.1080/00480169.1979.34615

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor