J. Anim Sci.
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J. Anim Sci. 1973. 37:1386-1390.
© 1973 American Society of Animal Science
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Net Energy Requirements for Growth of Lambs Age Three to Five Months

P. V. Rattray1, W. N. Garrett, H. H. Meyer2, G. E. Bradford, N. Hinman and N. E. East

University of California3, Davis 95616

Abstract

Eighty-four white-face wether lambs were used in a comparative slaughter experiment to determine their net energy requirements for maintenance (NEm) and gain (NEg). The metabolizable energy (ME) content of the diet was 2.67 and 2.59 kcals ME/g DM when fed at either a maintenance or ad libitum level of feeding, respectively. The ME was used for maintenance and gain with efficiencies of 65.7% and 40.8%, respectively. The NEm and NEg contents of the diet were 1.75 and 1.04 kcals NE/g DM, respectively. The daily NEm requirement was 79.4 kcal/W3/4kg and the daily NEg requirement was 322.2 kcal/kg gain/W3/4kg.

Footnotes

1 Present address: Ruakura Animal Research Station, Hamilton, New Zealand.

2 Present address: Genetics Department, University of Minnesota, St. Paul, 55101.

3 Department of Animal Science.






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Copyright © 1973 by the American Society of Animal Science.