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Alternate Day Protein Supplementation Of Corn Stalk Based Diets With High And Low Ruminal Escape Protein Sources, R. M. Collins, R. H. Pritchard
Alternate Day Protein Supplementation Of Corn Stalk Based Diets With High And Low Ruminal Escape Protein Sources, R. M. Collins, R. H. Pritchard
South Dakota Beef Report, 1991
Twenty-four crossbred wethers (88 ± .44 Ib) were utilized to determine optimal level of dietary CP when corn gluten meal (CGM) and soybean meal (SBM) based supplements were fed alternate days. Diets were arranged in a 2 x 3 factorial design with SBM and CGM fed at 8, 9 or 10% dietary CP. Supplements were top dressed on ground corn stalks at a rate of two times the daily required amount (19.78% DM basis). The collection term consisted of an 8-day total feces and urine collection. DM1 and DDMl were improved (P<.01) when CGM was fed and as dietary CP was increased by either supplement. Dry matter digestibility (DMD) decreased (P<.05) as dietary CP level increased. Neutral detergent fiber digestibility (NDFD) did not differ (P>.05) for protein source or dietary CP level. …
Grain Sources And Roughage Levels For Limited Feeding Backgrounding Programs, R. H. Pritchard, M. A. Robbins
Grain Sources And Roughage Levels For Limited Feeding Backgrounding Programs, R. H. Pritchard, M. A. Robbins
South Dakota Beef Report, 1991
The effects of grain source and roughage level in limited intake feeding programs were evaluated in 622-lb steer calves. Supplemented diets were based on high moisture ear corn (HMEC), whole shelled corn (WSC) + hay to provide similar NDF to the HMEC diet, HMEC diet containing 10% hay and the WSC + hay diet formulated to contain NDF similar to HMEC + hay. Steer calves were blocked by weight and fed to achieve 2.2 Ib ADG for a 52-day period. Steers fed HMEC had higher (P<.01) ADG and lower (P<.01) feed/gain than WSC fed steers. Low crude protein in the hay source caused lower (P<.01) crude protein in WSC diets. Lower crude protein intake could have limited steer growth. NE utilization appeared more efficient (P<.05) for heavy weight block steers, reflecting NRC equation low sensitivity to modest differences in frame size. Roughage level did not affect performance and did not interact with grain source.