NorFor Feed table has been updated

The feed values of triticale, peas, horse beans and rape straw have been updated in the NorFor Feed table. The new values are based on feed analyses from Sweden and Denmark and are compared with former values, in table 1. No feed samples from Norway or Iceland were reported. New starch values on these feeds were only reported from Sweden.

DM content was standardized to 85 %. There are a few samples with lower DM. Storable feedstuffs should have at least 85 % DM or drier.
There were only small adjustments made in ash content and content of calcium, phosphorus, magnesium, potassium and sulfur.

Triticale
The crude protein content was increased 5 grams to 110 g per kg DM.
Swedish values were slightly higher, approximately 5 g higher than the new feed table value, while Danish values were approximately 5 g lower. The difference was so small that the countries can share the same feed number.
The increase in NDF is due to feed samples from Denmark that raised the average value. Starch analyses from Sweden lowered the starch content with 9 g compared to before. The energy value (NEL20) was slightly lowered due to increased NDF and less starch.

Peas
Soluble crude protein was increased according to the new analyses. NDF was lowered with 13 g to 126 g per kg DM. The average values were lower than the former value in both Denmark and Sweden. The starch value was increased by 32 g to 510 g per kg DM. The increase in PBV20 is mostly explained by increased solubility of the crude protein.

Horse beans
Crude protein content has been lowered with 18 g. The average values from Denmark and Sweden were consistent with each other. Analyses from Swedish samples increase the feed table starch value to 455 g per kg DM. PBV20 was lowered due to lowered crude protein content and increase starch content.

Table 1. Updated (new) feed values for triticale, peas and horse beans in NorFor Feed table, November 11, 2010. Former values (before November 11) and the difference between new and old values are also shown.
Table 1 (pdf)

Rape straw
Rape straw from two Swedish farms has been analyzed thoroughly. The results showed that rape straw contains less crude protein than ordinary cereal straw but significantly more iNDF (table 2). It means that the rape straw fiber will only be degraded to a small extent in the rumen and pass relatively undegraded through the body. The high fiber content will benefit the structural value of the diet, shown as high fill value and long chewing time, but it also means a low nutritional value. Rape straw will thus give structure but not much nutrients. The price will determine whether rape straw will be used or not in feed rations.

Table 2. Chemical composition and nutritive value of rape straw and barley straw
Table 2 (pdf)


More information:
For more information about the updates, contact Maria Åkerlind,


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