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Journal of Dairy Science Vol. 59 No. 11 1923-1928
© 1976 by American Dairy Science Association ®
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Feeding Behavior of Steers Fed a Complete Mixed Ration1

L. E. Chase2, P. J. Wangsness and B. R. Baumgardt

Department of Dairy and Animal Science, The Pennsylvania State University, University Park 16802

ABSTRACT

Feeding behavior of five Holstein steers fed a complete mixed ration was studied by use of individual, electronically controlled feeding behavior units. Both individual meal and daily behavioral parameters were measured. Number of meals, size of each individual meal, time spent eating, and intervals between meals were measured. Eating rates were then calculated. Diurnal feeding patterns were observed with 60.9% of the meals occurring between 0600 and 1800 h. For individual meals, body weight accounted for less than 30% of the variation in meal size. Average meal size was 414.5 g. Respective means for overall meal duration, actual meal duration, overall eating rate, and actual eating rate were 20.3 min, 13.7 min, 23.1 g/min, and 30.0 g/min. Meal size per body weight (g/kg or g/kg.75) was relatively constant during observation. Both increased eating rate and increased meal length were associated with larger meals. However, eating rate tended to plateau while meal length continued to increase with larger meals. Steers consumed 10.01 meals per day while total daily overall meal duration and actual meal duration were 220.9 and 156.4 min.

FOOTNOTES

1 Authorized for publication on May 13, 1976, as paper no. 5082 in the journal series of the Pennsylvania Agricultural Experiment Station.

2 Department of Animal Science, Cornell University, Ithaca, NY 14853.






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Copyright © 1976 by the American Dairy Science Association ®.