Influence of the beta-agonist salbutamol on claw horn lesions and walking soundness in finishing pigs
| Autor: | S.A. Kempson, R.H.C. Penny, George Gettinby, T.P. Rolph, J.A. Tait, A.M. Johnston, H.J. Guise |
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| Rok vydání: | 1994 |
| Předmět: |
Male
Agonist Hoof and Claw medicine.medical_specialty Claw Heel Swine medicine.drug_class Lameness Animal Movement Foot lesions Foot Diseases chemistry.chemical_compound Animal science Cimaterol medicine Animals Albuterol Beta (finance) Swine Diseases General Veterinary business.industry General Medicine Diet Surgery medicine.anatomical_structure chemistry Salbutamol Female business Foot (unit) medicine.drug |
| Zdroj: | Veterinary Record. 135:374-381 |
| ISSN: | 2042-7670 0042-4900 |
| DOI: | 10.1136/vr.135.16.374 |
| Popis: | The effects of feeding the beta-adrenergic agonist salbutamol to pigs at levels between 0.5 and 5.0 mg/kg feed for different periods were studied in six experiments. The feet and ability to walk of pigs weighing 30 to 100 kg were examined at intervals. False sand-crack, white-line and heel erosion lesions were classified as mild or severe, and corns and wall haemorrhages were also recorded. At each examination the pig was given a grade for the overall severity of its foot lesions. Salbutamol fed at 1.0 to 5.0 mg/kg feed, for as little as 21 to 28 days, increased the frequency (P < 0.05 to 0.001) and often the severity (P < 0.05) of the foot lesions, the higher doses tending to produce more severe lesions, and the overall foot grades deteriorated (P < 0.001). The effects on both sexes were similar. No changes were observed when 0.5 mg/kg was fed for 56 days. Despite the severity of many of the foot lesions, the pigs became lame in only one experiment. Electron microscopy indicated that salbutamol was interfering with horn production, but light microscopy revealed no changes in skin sections. These findings suggested that salbutamol was not directly affecting the function of keratinocytes. Supplementing the diet of the pigs with biotin and methionine did not delay, or prevent, the effects of salbutamol. |
| Databáze: | OpenAIRE |
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