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Differences Between an Acid Detergent Fiber & a Neutral Detergent Fiber

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<strong>Differences</strong><br />

<strong>Between</strong> <strong>an</strong> <strong>Acid</strong><br />

<strong>Detergent</strong> <strong>Fiber</strong> &<br />

a <strong>Neutral</strong><br />

<strong>Detergent</strong> <strong>Fiber</strong><br />

Article Source: sciencing.com<br />

Image from this source


Hemicellulose<br />

The main difference between acid detergent fiber <strong>an</strong>d neutral<br />

detergent fiber is the inclusion of hemicellulose in the<br />

calculation of neutral detergent fiber. Both calculations include<br />

cellulose <strong>an</strong>d lignin present in pl<strong>an</strong>t material. Hemicellulose,<br />

which is also a carbohydrate present in pl<strong>an</strong>t material, is<br />

considered in the calculation of neutral detergent fiber. This<br />

small carbohydrate makes the difference on how the two fibers<br />

are applied to feed.<br />

<strong>Acid</strong> <strong>Neutral</strong> <strong>Fiber</strong><br />

The acid neutral fiber is used to calculate the energy that will be<br />

derived from feed that c<strong>an</strong> be used by the <strong>an</strong>imal. These<br />

calculations are very import<strong>an</strong>t in determining how much feed<br />

must be given to <strong>an</strong> <strong>an</strong>imal. For ex<strong>amp</strong>le, a beef cow <strong>an</strong>d a milk<br />

cow have vastly different energy requirements. A milk cow<br />

requires much more energy from its feed to meet the dem<strong>an</strong>ds<br />

of producing milk.<br />

<strong>Neutral</strong> <strong>Detergent</strong> <strong>Fiber</strong>s<br />

<strong>Neutral</strong> detergent fiber is used to calculate how much food that<br />

<strong>an</strong> <strong>an</strong>imal c<strong>an</strong> hold. There is a limit to how much food will fit into<br />

<strong>an</strong> <strong>an</strong>imal at one time. For ex<strong>amp</strong>le, a cow will eat until the first<br />

chamber of the stomach, also called the rumen, is full. Once<br />

that chamber is full, the cow will no longer eat until the food<br />

moves to the gut or is digested. Each type of forage food or<br />

fiber will take up different amounts of space <strong>an</strong>d digest<br />

differently. The neutral detergent fiber provides information to<br />

the quality of the feed.


Combing <strong>Acid</strong> <strong>an</strong>d <strong>Neutral</strong><br />

<strong>Detergent</strong> <strong>Fiber</strong>s<br />

The two fiber calculations are used in conjunction with one<br />

<strong>an</strong>other to determine the amount <strong>an</strong>d energy that will be<br />

contained in a feed. <strong>Fiber</strong> that has low cellulose, lignin <strong>an</strong>d<br />

hemicellulose will typically take up less space in the stomach<br />

<strong>an</strong>d are able to provide larger amounts of energy to the <strong>an</strong>imal.<br />

<strong>Fiber</strong>s high in these materials take up more space <strong>an</strong>d produce<br />

less energy for the <strong>an</strong>imal to use.

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