J. Anim Sci.
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J. Anim Sci. 1956. 15:1097-1102.
© 1956 American Society of Animal Science
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The Effect of Wintering Plane of Nutrition on Subsequent Gains of Beef Yearling Steers on Irrigated Pastures1

W. W. Heinemann and R. W. Van Keuren2

Washington Agricultural Experiment Stations

Abstract

Weaned beef calves wintered for 155 days at three levels of nutrition were subsequently placed on six kinds of irrigated pastures. As yearlings, the cattle were assigned at random from each of the wintering treatment groups to each of the pastures.

Average daily gains by calves on the high, medium, and low wintering treatments were 1.29, 1.01, and 0.33 lb., respectively, at per-pound costs for feed of 13.15, 13.85, and 34.75 cents. There was no significant difference between the average daily gains made by the calves on the high and medium treatments. A significant difference was noted between the gains of the low treatment calves and those on each of the other two wintering treatments.

Cattle grazing the grass-legume mixtures gained significantly faster than those grazing the grasses. There was also a significant difference between the pasture gains of the steers wintered at the low level and those wintered at medium and high levels. Average daily gains on pasture were 1.89, 1.91, and 2.45 lb. by the steers wintered at the high, medium, and low levels, respectively. A significant negative correlation was found between winter gains and subsequent pasture gains.

Wintering treatment had no significant effect on feedlot performance of the cattle following the grazing season.

Footnotes

1 Scientific Paper No. 1478, Washington Agricultural Experiment Station, Pullman. Project No. 1154.

2 Irrigation Experiment Station, Prosser, Washington.






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Copyright © 1956 by the American Society of Animal Science.