cornstalks, sunflowers, fermentation, in vitro
The suitability of drought stressed, chopped sunflower heads as an energy and crude protein supplement to low quality forages was evaluated using in vitro fermentation techniques. Sources of supplemental crude protein used in comparisons were drought stressed, chopped sunflower heads, soybean meal, soybeans, and urea. These crude protein sources were added to cornstalks to produce substrates containing 6, 8, 10, 12, and 15% crude protein. Observed fermentable dry matter was higher than the estimated fermentable dry matters, indicating positive associative effects of crude protein level. Similar differences in observed and estimated fermentable dry matters occurred among soybean meal, soybean, and urea treatment means with the drought stressed, chopped sunflower treatment mean being more erratic and lower. Ether extract content of drought stressed, chopped sunflower heads may limit their use as a protein and energy supplement.
Number of Pages
South Dakota State University
Copyright © 1992 South Dakota State University.
Thomson, D. U. and Pritchard, R. H., "In Vitro Analysis of Drought Stressed, Chopped Sunflower Heads as a Protein Supplement for Cattle Grazing Corn Crop Residues" (1992). South Dakota Beef Report, 1992. 4.