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Influence of Pelleting on the Comparative Feeding Value of Cottonseed Meal in Receiving Diets for Feedlot Calves

University of California, El Centro 92243

Abstract

Three trials were conducted to evaluate the influence of pelleting solvent-extracted cottonseed meal on its comparative feeding value in receiving diets for feedlot calves. Treatments consisted of a basal diet supplemented with cottonseed meal in either a loose or pelleted (6.4-mm diameter) form. The basal diet contained (dry matter basis) 5.1% alfalfa hay, 17.3% sudangrass hay, 46.4% steam-flaked corn, 19.0% cottonseed meal, 5.8% cane molasses, 3.2% fat, 1.1% dicalcium phosphate, 1.3% limestone, .41% urea, .50% trace mineral salt and 2,200 IU/kg vitamin A. In two 56-d receiving trials involving 240 crossbred calves (100 kg), physical form of supplemental cottonseed meal did not influence feed intake or calf performance (P > .20). In a metabolism trial involving four crossbred calves (128 kg) with cannulas in the rumen and proximal duodenum, substituting pelleted cottonseed meal for the ground form did not influence ruminal or total tract digestibility of organic matter, acid detergent fiber or N (P > .20). Feeding value of cottonseed meal in receiving diets for feedlot calves was not improved through pelleting.

¹ Anim. Sci. Dept.

² Ext. Anim. Sci., Univ. of California, Davis 95616.

³ Ext. Vet. Med., Univ. of California, Davis 95616.