J. Anim Sci.
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J. Anim Sci. 1976. 42:1098-1103.
© 1976 American Society of Animal Science
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Carcass Composition in Single and Multiple Birth Cattle1

D.M. Hallford2, E.J. Turman3, G. E. Selk4, L. E. Walters3 and D. F. Stephens5,6,

Oklahoma State University, Stillwater, 74074 and U.S. Department of Agriculture, El Reno 73036

Abstract

Twenty heifers and 18 steers were placed in a feedlot at the time of weaning and full fed an 80% concentrate ration. The animals were either single born and single reared or born in a multiple set and twin reared. All were sired by Angus bulls and were classified into two breeding groups depending on the breeding of the dams: dairy cross if they had Angus x Holstein crossbred dams, or beef cross if they had Hereford or Hereford X Angus crossbred dams. The animals were slaughtered at an average weight of 909 lb (412 kg) and 803 lb (364 kg) for steers and heifers, respectively. Carcass cut-out information and weights of the total fat, fat free lean and bone were obtained.

Neither total fat nor fat free lean in steers was significantly influenced by type of birth or breeding group. Single birth beef cross steers had more bone than multiple birth beed cross steers (P<.05), while percentage bone in the dairy cross steers was relatively constant. No significant differences in total fat, fat free lean or bone were associated with type of birth or breeding group in the heifers.

Footnotes

1 Journal Article 3012 of the Agricultural Experiment Station, Oklahoma State University, Stillwater, Oklahoma. Research conducted by the Department of Animal Sciences and Industry in cooperation with the U.S.D.A., Agricultural Research Service, Southern Region.

2 Present address: Department of Animal and Range Sciences, New Mexico State University, Las Cruces, 88003.

3 Department of Animal Sciences and Industry, Oklahoma State University, Stillwater.

4 Present address: Oklahoma Cooperative Extension Service, Claremore

5 Fort Reno Livestock Research Station, A.R.S., U.S.D.A. Present address: Department of Animal Science, University of Nebraska, Lincoln.

6 The assistance of J. V. Whiteman, Professor of Animal Science, in the statistical analysis of these data is gratefully acknowledged.






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Copyright © 1976 by the American Society of Animal Science.