Abstract | OBJECTIVES: To test whether oxytetracycline inactivates collagenase when combined as a potential treatment for retained fetal membranes in cattle and to determine whether oxytetracycline passes to blood from fetal membranes after intraplacental injection. DESIGN: Prospective, controlled study. SAMPLE POPULATION: 288 placentomes from 12 cows in their third trimester of pregnancy and 4 cows at term pregnancy. PROCEDURE: 8 experimental groups were established: saline control, collagenase, collagenase plus oxytetracycline at 3 dosages, and oxytetracycline at 3 dosages. Placentomes were infused through an umbilical vessel with the test solutions and incubated at 39 C for 4 hours. Immediately after incubation, the force needed to detach cotyledons from caruncles was measured by a manometric technique. Cotyledon-caruncle interface fluids were analyzed for hydroxyproline ( collagen breakdown) and total protein contents. A combination of collagenase and oxytetracycline was injected via umbilical arteries of cows undergoing cesarean section and in cows with retained fetal membranes after natural delivery. Antibiotic residue in blood was determined by the Bacillus stearothermophilus disk assay. RESULTS: CLINICAL RELEVANCE:
Oxytetracycline and collagenase may be a potential combination treatment for retained fetal membranes in cattle. In addition, the lack of antibiotic residue detection in blood may be of regulatory relevance.
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Authors | K A Fecteau, H Eiler |
Journal | American journal of veterinary research
(Am J Vet Res)
Vol. 57
Issue 4
Pg. 522-5
(Apr 1996)
ISSN: 0002-9645 [Print] United States |
PMID | 8712518
(Publication Type: Clinical Trial, Controlled Clinical Trial, Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Anti-Bacterial Agents
- Collagenases
- Oxytetracycline
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Topics |
- Animals
- Anti-Bacterial Agents
(administration & dosage, pharmacokinetics, therapeutic use)
- Cattle
- Cattle Diseases
- Clostridium
- Collagenases
(administration & dosage, therapeutic use)
- Drug Therapy, Combination
- Female
- Injections, Intra-Arterial
- Manometry
- Milk
(chemistry)
- Oxytetracycline
(administration & dosage, pharmacokinetics, therapeutic use)
- Placenta, Retained
(drug therapy, veterinary)
- Pregnancy
- Pressure
- Probability
- Prospective Studies
- Reproducibility of Results
- Umbilical Arteries
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