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Improvement of Barley Rations for Swine. II. Effects of Pelleting and Supplementation with Barley Malt¹

Oregon State College, Corvallis^,3

Abstract

A 3x3 factorial experiment compared swine rations, the grain components of which were corn, barley and barley supplemented with 2.5% barley malt. Each ration was fed in meal, pellet and reground pellet variations.

Chemical analysis of pelleted and non-pelleted rations revealed a slight reduction in crude fiber and cellulose due to pelleting, generally without increase in either reducing sugar or total soluble carbohydrates.

Pelleting did not improve corn rations for pigs. Pigs fed barley pellets gained weight more rapidly than those fed barley meal and had a significantly improved (P<0.05) efficiency of feed conversion.

Supplementation with barley malt did not enhance growth rate of pigs fed barley rations in either the meal or pellet form. A trend toward improved feed utilization on barley rations containing barley malt was noted, though data were not consistent.

The data suggest that certain chemical changes occur in the carbohydrate fraction of rations when pelleted; however, these changes are not of sufficient magnitude to be measurable in the performance of the growing pig. The primary benefit of pelleting apparently is a reduction of feed wastage.

¹ Technical Paper No. 1285, Oregon Agricultural Experiment Station.

² The authors are grateful to the Great Western Malting Company, Vancouver, Washington, for a grant-in-aid and for materials used in this experiment. Appreciation is also expressed to Dr. Roger G. Petersen for advice and aid in the statistical treatment of data and to Mr. Marvin Heupel for care of the experimental animals.

³ Department of Dairy and Animal Husbandry.