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Additional Considerations

There are a number of additional factors to consider when assessing the nutritional value of a feedstuff. The first factor to consider is the variability of the nutritional value of feedstuffs. The nutritional value of a feedstuff may differ from the book value and also may change over time; the degree of difference and change will vary by feedstuff. Therefore, it is recommended to establish a sampling and analysis schedule for each feedstuff. In addition, one of the initial steps of on-farm problem solving should be to assess the nutritional value of the current feedstuffs. Another group of factors is the effect of management practices on the nutritional value of a feedstuff. Management practices of the feedstuff producer influence the nutritional value of a feedstuff. Examples of management practices influencing the nutritional value include soil fertility and moisture, climate such as moisture and temperature, producer goals such as yield and quality, and harvest and storage methods. Reputation of a feed dealer may provide information on the nutritional value of the feedstuff. Management practices of the livestock producer also influence the nutritional value of the feedstuff. Examples of management practices influencing nutritional value include general housekeeping, adequate storage facilities, proper feed-out methods, and management of inventory.

As stated previously, cost is a consideration when assessing the nutritional value of a feed. For all commercial livestock producers, feed is the largest of all production costs. Depending on the species, feed will account for 50-75% of total production costs. Cost should be evaluated based on cost relative to nutrients provided. The feedstuff selected should provide a long-term, cost-effective source of nutrients.

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