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Some Experiments in Preservation of High-Moisture Hay-Crop Silages

Dairy Husbandry Research Branch

J. R. McCalmont

Agricultural Engineering Research Branch, USDA, Beltsville, Maryland

ABSTRACT

Reports on the use of preservatives, to improve the efficiency of nutrient preservation, chemical quality, and feeding value of silage made from high-moisture hay crops, have been numerous. Lack of agreement as to the necessity of, or expected benefit from, these preservatives is quite apparent. Allred et al. (1) and Wittwer et al. (9) reported that neither sodium meta-bisulfite, molasses, nor Brewer's dried grains decreased storage losses or improved feeding value sufficiently to warrant their use.

Bratzler et al. (5) reported marked improvement in nutrient preservation from the use of sodium meta-bisulfite. Improvement of chemical quality through the use of Kylage² or sodium meta-bisulfite was observed by Arehibald (2). Variability between control silages was observed by Gordon et al. (6) to be the primary factor influencing the apparent benefit obtained from preservatives. Bohstedt et al. (4) reported good preservation of alfalfa silage by 150 to 200 pounds of added cornmeal.

¹ Present address: Davis and Elkins College, Elkins, West Virginia.