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Coefficient of variation (CV%)
What does the coefficient of variation (CV%) indicate about mixer performance in feed production, and what CV% level is considered acceptable for good mixing uniformity?
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4 Replies
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The coefficient of variation (CV%) measures how uniformly ingredients are distributed in the feed after mixing. It is calculated from the variation in nutrient (often salt or a tracer) across multiple samples.
What CV% indicates:
Low CV% → ingredients are evenly mixed → good mixer performance
High CV% → uneven distribution → poor mixing, risk of nutrient imbalance (some birds get more, some less)
Acceptable CV% levels:
≤ 10% → Generally considered good mixing uniformity (industry standard)
≤ 7% → Very good / excellent mixing
> 10% → Poor mixing, needs improvement
In feed production, maintaining a CV% below 10% ensures consistent nutrition, better growth, and overall flock performance
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Important discussion. Thanks for sharing.
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Lower CV% = better mixer performance
≤ 10% is acceptable, and ≤ 5% is excellent
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less than 5
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