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Biomedical subjects

W Schaftenaar

Publications and source records attributed to W Schaftenaar.

3 recordsLinked to original sources

[Oxytetracycline and oral herd treatment: a literature review].

Pharmacotherapeutic, pharmacodynamic and pharmacokinetic aspects of oral mass medication with oxytetracycline (OTC) in pigs, calves and poultry are discussed in this review. Clinical studies with successful therapeutic results are scarce in literature; however, OTC is still frequently used for mass medication. Some practical advice to improve the bioavailability of OTC is given. This mainly concerns the reduction of the interaction between calcium ions and OTC. OTC may be useful for oral mass medication when applied as a prophylactic drug. Pharmacological studies are required in order to provide more knowledge about the efficacy of OTC-mass medication. Additional information can be acquired from the field by improving and extending the reciprocal co-operation between field veterinarians and diagnostic laboratories. This may lead to a more justified choice from the various possibilities of antimicrobial use in livestock.

Animals

[Studies on intersucking in dairy cattle (author's transl)].

Intersucking occurred on nearly 50 per cent of the farms in the Province of Utrecht. The incidence was not affected by housing systems, the size of the herd and the surface area available to each cow in cubicle stalls. It is unlikely that the animals imitate intersucking by others. Intersucking often occurs prior to evening milking, the sucking animal usually forming a steady pair with the suckled cow. Of four A.I. bulls studied, one had a significantly higher proportion of intersucking heifers among his offspring than the others. Some other factors possibly affecting the incidence of intersucking, such as the rearing system, composition of the ration and the space allotted to each cow for feeding were not studied because of insufficient information or inadequate variation of the material.

Animal Feed