Abstract
Summary
1. Rauwolfia vomitoria root fed to cattle at levels of 5, 25 and 125 mg per head per day improved growth rate and feed efficiency. Best results were obtained with the 25 mg level. Hydroxyzine fed to cattle at levels of 1.25, 2.5, 10, 50 and 500 mg per head per day improved growth with best results at 1.25 and 10 mg per head per day.
2. Wether lambs fed rations containing hydroxyzine at levels of 0.24, 1.2, 6.0 and 30.0 g per ton, or Rauwolfia, 3.0 g per ton, responded to all supplements. Optimum growth was obtained with a level of as low as 1.2 g per ton of hydroxyzine and 3.0 g per ton of Rauwolfia.
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