Abstract

Ninety spring-calving Hereford × Angus cows grazing low-quality, tallgrass-prairie forage during the winter were fed 5 lb/day of a supplement containing combinations of wheat bran (high in digestible fiber) and second clears (high in starch). The by-product combinations accounted for 47 to 49% of each supplement, as follows: 1) 100% wheat bran; 2) 67% wheat bran, 33% second clears; and 3) 33% wheat bran, 67% second clears. Cow performance was measured by changes in body weight and body condition score. The combinations of wheat bran and second clears had no significant effects on cow performance, calf birth weights, calf performance, or cow pregnancy rates.

Highlights

  • Supplemental protein is imperative for efficient utilization of low quality range forage

  • The by-product combinations accounted for 47 to 49% of each supplement, as follows: 1) 100% wheat bran; 2) 67% wheat bran, 33% second clears; and 3) 33% wheat bran, 67% second clears

  • Cow performance was measured by changes in body weight and body condition score

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Summary

Introduction

Supplemental protein is imperative for efficient utilization of low quality range forage. Recent research at Kansas State University implies that the type of supplemental protein is important. Degradable intake protein (DIP) is that portion of crude protein degraded by ruminal microorganisms and is essential for efficient utilization of low-quality forage. Even when DIP needs are met, additional energy may be required to achieve desired levels of performance. Our objective was to evaluate the ability of two wheat-milling byproducts to provide additional supplemental energy to range beef cows

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