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Craig

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When trying to grow your heifers which is better, higher RFV or protein? I know there are more factors to the equation than this, but I'm curious what gives more bang for the buck. Heifers are on straight forage diet, and are not bred.
 
Craig":2c3qqk37 said:
When trying to grow your heifers which is better, higher RFV or protein? I know there are more factors to the equation than this, but I'm curious what gives more bang for the buck. Heifers are on straight forage diet, and are not bred.
Click to expand...
Protein along with TDN, ADF and NDF. RFV is nothing more than a calculated number using some of the other values obtained in a feed test. Works fairly well with alfalfa but stick with protein, TDN, ADF and NDF and any of the net energ values given in your test results.
 
[/quote]
Protein along with TDN, ADF and NDF. RFV is nothing more than a calculated number using some of the other values obtained in a feed test. Works fairly well with alfalfa but stick with protein, TDN, ADF and NDF and any of the net energ values given in your test results.[/quote]


:nod: :nod: :nod:

agree
 
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Craig":1zv8un3a said:
Aside from protein, do you want higher or lower scores?
Click to expand...
The higher the TDN the more digestible.....
ADF is a reflection of the non digestible fiber within a grass or hay. A measure of lignin etc. The lower this number the better.
NDF is a reflection of the amount of the grass or hay the cow is able to consume....cellulose and hemicellulose. An indication of "fill factor" or the cow simply feeling full. The higher this number the less digestible and more bulky the feed. Lush green leafy alfalfa will have a relatively low NDF whereas corn stalks will have a very high NDF. This will never be a really low number but the lower it is the better unless you're purposely wanting to feed something taht will fill them quickly and limit intake.
 

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