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Effect of repeated applications of sewage sludge to grassland on accumulation of potentially toxic elements in body tissues of grazing lambs

Published online by Cambridge University Press:  05 November 2021

J M Wilkinson  and
J Hill
J M Wilkinson
Affiliation:
Chalcombe Agricultural Resources, Painshall, Church Lane, Welton, Lincoln LN2 3LT, United Kingdom
J Hill
Affiliation:
Dept of Agriculture and Business Management, Writtle College Chelmsford, Essex CM1 3RR, United Kingdom
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Extract

Hill and Wilkinson (1997) found that the mean intake of soil+sludge DM by lambs grazing perennial ryegrass was 101g/kg total DM intake and Wilkinson et al (1996) observed accumulation of Pb in liver and kidney, but not in muscle tissue of housed lambs given grass diets containing 100 g/kg DM of soil mixed with sewage sludge and 900 g/kg DM dried grass. The aim of the trial was to assess the extent to which PTEs might accumulate in body tissues of lambs grazing grassland to which sludge had been applied over many years and where the soil contained concentrations of Cd which were close to the UK statutory limit for sludge-amended soil (3 mg/kg DM sampled to 25 cm depth; SI, 1989).

Type
Programme
Information
Proceedings of the British Society of Animal Science , Volume 1997 , 1997 , pp. 150
Copyright
Copyright © British Society of Animal Science 1997

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References

S.I. 1989. The Sludge (Use in Agriculture) Regulations. Statutory Instrument, 1989 No. 1263.Google Scholar
Wilkinson, J.M., Hill, J., Livesey, C.T., Stark, B.A., Curran, M.K., Lean, I.J. and Hall, J.E. 1996. Sewage sludge as a potential source of lead in liver, kidney and muscle of growing lambs. Animal Science 62:666.Google Scholar
Hill, J. and Wilkinson, J. M. 1997. Effect of season and method of application on the voluntary intake, digestibility of herbage and growth of weaned lambs grazing pastures treated with sewage sludge. Animal Science 63 (in press).Google Scholar