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Ovine ill-thrift in Nova Scotia:I. The possible regulation of the rumen flora in sheep by the fungal flora of permanent pasture

Published online by Cambridge University Press:  27 March 2009

D. Brewer ,
F. W. Calder ,
T. M. MacIntyre  and
A. Taylor
D. Brewer
Affiliation:
Atlantic Regional Laboratory, National Research Council of Canada, Halifax, Nova Scotia, and Experimental Farm, Canada Department of Agriculture, Nappan, Nova Scotia
F. W. Calder
Affiliation:
Atlantic Regional Laboratory, National Research Council of Canada, Halifax, Nova Scotia, and Experimental Farm, Canada Department of Agriculture, Nappan, Nova Scotia
T. M. MacIntyre
Affiliation:
Atlantic Regional Laboratory, National Research Council of Canada, Halifax, Nova Scotia, and Experimental Farm, Canada Department of Agriculture, Nappan, Nova Scotia
A. Taylor
Affiliation:
Atlantic Regional Laboratory, National Research Council of Canada, Halifax, Nova Scotia, and Experimental Farm, Canada Department of Agriculture, Nappan, Nova Scotia
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Summary

The growth of ewe lambs of the Shropshire breed declined and in some cases ceased at the end of July, when they grazed permanent pastures at the Experimental Farm, Nappan, Nova Scotia. This decline in growth coincided with a decrease of about three orders of magnitude in the numbers of viable rumen bacteria. At the end of July an increase of one to two orders of magnitude was observed in the numbers of viable fungi collected from the pastures. Lambs grazing pastures developed from tidal marsh of the Bay of Fundy had a better growth performance than lambs grazing adjacent pastures developed from mixed conifer-deciduous forest. The forest soils supported a greater fungal population than the marshland soil, and several species were found predominantly on the forest soil.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 76 , Issue 3 , June 1971 , pp. 465 - 477
Copyright
Copyright © Cambridge University Press 1971

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References

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