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Long-term liming regime increases prime lamb production on acid soils

Journal Article


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Abstract


  • Prime lamb live weight response to lime application on pasture was measured in a grazing experiment in

    the high rainfall zone of the southwestern slopes of New South Wales, Australia. The pastures were limed

    every 6 years over 15 years. First cross South African Meat Merino lambs were used as test animals. Preand

    post-grazing pasture dry matter (DM) yield, botanical composition, feed quality and lamb live weight

    were monitored over 12 weeks in 2007. Results showed that liming significantly increased pastureDMyield

    of high quality species and improved overall pasture quality due to increased digestibility and metabolic

    energy content. As a result, the limed perennial and annual pastures carried 24.0% (3.6 lambs ha−1) and

    29.0% (4.4 lambs ha−1)more stock than the unlimed perennial and annual pastures, respectively. Averaged

    across pasture types, the limed pastures produced 30.6% (131 kg ha−1) more lamb live weight gain than

    the unlimed pastures over 12 weeks. The live weight gain varied between grazing cycles depending on the

    availability of feed-on-offer and feed quality,whichwere closely related to the rainfall pattern.The perennial

    pastures did not show any advantage in animal production over annual pastures during the experimental

    period due to lack of moisture in the deep soil profile because of severe drought in the previous year. More

    seasons with normal or above average rainfall are needed to compare animal production on perennial

    pastures and annual pastures to investigate the advantage of perennial pastures in animal production.

Authors


  •   Chen, Guohong (external author)
  •   Li, G D. (external author)
  •   Conyers, M K. (external author)
  •   Cullis, Brian R.

Publication Date


  • 2009

Citation


  • Chen, G., Li, G. D., Conyers, M. K. & Cullis, B. R. (2009). Long-term liming regime increases prime lamb production on acid soils. Experimental Agriculture, 45 (2), 221-234.

Scopus Eid


  • 2-s2.0-70350435060

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=9413&context=infopapers

Ro Metadata Url


  • http://ro.uow.edu.au/infopapers/2078

Has Global Citation Frequency


Number Of Pages


  • 13

Start Page


  • 221

End Page


  • 234

Volume


  • 45

Issue


  • 2

Place Of Publication


  • United Kingdom

Abstract


  • Prime lamb live weight response to lime application on pasture was measured in a grazing experiment in

    the high rainfall zone of the southwestern slopes of New South Wales, Australia. The pastures were limed

    every 6 years over 15 years. First cross South African Meat Merino lambs were used as test animals. Preand

    post-grazing pasture dry matter (DM) yield, botanical composition, feed quality and lamb live weight

    were monitored over 12 weeks in 2007. Results showed that liming significantly increased pastureDMyield

    of high quality species and improved overall pasture quality due to increased digestibility and metabolic

    energy content. As a result, the limed perennial and annual pastures carried 24.0% (3.6 lambs ha−1) and

    29.0% (4.4 lambs ha−1)more stock than the unlimed perennial and annual pastures, respectively. Averaged

    across pasture types, the limed pastures produced 30.6% (131 kg ha−1) more lamb live weight gain than

    the unlimed pastures over 12 weeks. The live weight gain varied between grazing cycles depending on the

    availability of feed-on-offer and feed quality,whichwere closely related to the rainfall pattern.The perennial

    pastures did not show any advantage in animal production over annual pastures during the experimental

    period due to lack of moisture in the deep soil profile because of severe drought in the previous year. More

    seasons with normal or above average rainfall are needed to compare animal production on perennial

    pastures and annual pastures to investigate the advantage of perennial pastures in animal production.

Authors


  •   Chen, Guohong (external author)
  •   Li, G D. (external author)
  •   Conyers, M K. (external author)
  •   Cullis, Brian R.

Publication Date


  • 2009

Citation


  • Chen, G., Li, G. D., Conyers, M. K. & Cullis, B. R. (2009). Long-term liming regime increases prime lamb production on acid soils. Experimental Agriculture, 45 (2), 221-234.

Scopus Eid


  • 2-s2.0-70350435060

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=9413&context=infopapers

Ro Metadata Url


  • http://ro.uow.edu.au/infopapers/2078

Has Global Citation Frequency


Number Of Pages


  • 13

Start Page


  • 221

End Page


  • 234

Volume


  • 45

Issue


  • 2

Place Of Publication


  • United Kingdom