Furthering Understanding of the Nutritional Value of Baled Hay Over Time
Applied Research
Sawyer Fonnesbeck
Assistant Extension Educator
University of Idaho
Malad City
Abstract
Alfalfa hay is a vital component of agriculture in the United States. Not only is it a cash crop for many, but it is also a substantial part of livestock feed rations. There is, however, a lack of data to indicate the increase/decrease of nutritive value of baled hay over an extended period of time. In the fall of 2023, funding was secured to run a “seed study” to examine this very problem. Small bales of hay were purchased from three different hay growers in Oneida County, Idaho and placed into three separate storage methods; uncovered, tarped, or placed in an enclosed shed. This hay was then tested approximately every four months and analyzed at an independent laboratory. After 15 months, it was found that the quantity of minerals was nearly unchanged in all hay bales. Acid detergent fiber (ADF) in uncovered hay increased 5 times more than protected hay. Neutral detergent fiber (NDF) increased 10 times more than protected hay. Crude protein (CP) was also not greatly affected but the negative change of relative feed value (RFV) of unprotected hay was nearly 6 times more than protected hay. This is an ongoing study which will conclude in the fall of 2025. At that time, a full analysis of the data will be completed and rate of nutrient decline for each storage method will be calculated to offer insights into the longevity of baled hay over long periods of time.
Poster has NOT been presented at any previous NACAA AM/PIC
This poster is being submitted for judging. It will be displayed at the AM/PIC if not selected as a State winner. The abstract will be published in the proceedings.
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Authors: Sawyer Fonnesbeck
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Fonnesbeck, S. Assistant Extension Educator, University of Idaho, Idaho, 83252