The AOF and the Pork CRC are in the middle of a project intended to improve the understanding of canola meal as a stock feed ingredient and expand the application of canola meal in the stock feed industries. The Meal Guide attached is a key step in the project and much of the data refereed to in the guide can be found in the Canola Meal Value Chain Quality Improvement Report which was jointly funded by AOF and the Pork CRC. (see References)
Cootamundra Oilseeds is an active member of the AOF and contributor to this project.
In addition to the information supplied in the attached guide this document highlights some of the key characteristics and qualities of the Cootamundra Oilseed’s Cold Pressed Canola Meal which is unique in the Australian market. There is some older, but still valid data on the amino acid digestibility of canola for poultry and laboratory data on meals form the 06/07 season with specific reference to ruminant nutrition.
We will be doing more work in this area in the future and we intend to make you aware of that information as it becomes available.
Lysine Content and Digestibility in Canola Meals:
The graph (Figure 1) below, which comes directly from the recent AOF/Pork CRC report by Spragg and Mailer 2007, shows that cold pressed meal have more lysine per unit crude protein than the other meal types.
Figure 1: Lysine content of three meal types expressed as a percentage of crude protein.
Amino Acid Digestibility for Poultry:
Ravindran et. al. (1998) showed that cold pressed canola had consistently higher amino acid digestibility when compared to the average of all other canola meals in the data set. In that published data set the Cold Pressed meal is described as “Full Fat Canola Meal” and is shown in Figure 2 compared to the average of all other Canola Meals in that data set and the average of the three highest Crude Protein Soybean Meal samples in the same data set..
Figure 2: Amino acid Digestibility Coefficients of Canola and Soy for Broilers
Cold Pressed Canola in Ruminant Nutrition:
Net Energy Values: The AOF Pork CRC guide attached includes a table of energy values for Expeller and Solvent meals. Cootamundra Oilseeds is undertaking an independent project in this area and the finding on Net Energy (L, G and M) values for Canola meals are consistent with that table. How ever we have been able to determine that Cold pressed meal has higher NE values than Expeller and Solvent meals. This data (Figure 3) was all obtained at the same time through the one Lab using wet chem. methods with meal from the 06/07 season.
Figure 3:
Net Energy Vales for Meals from different production methods.
Soluble Protein:
The nutrient Soluble Protein (SP) is getting increased attention as the understanding of ruminant nutrition and modelling rumen function is expanded. SP is applied directly in the CPM model and similar parameters (but determined in a different manner) are used in the Feed Into Milk model. Having adequate SP in the ration is the first step in maximising microbial growth and getting as much value out of energy inputs as possible. The extent of heat treatment in processing is implicated in this process. In general, our analysis of SP values across meals types is consistent with the heat effects on digestibility. However, there was an unexpectedly low SP value for Expeller meal. This is under review hence that value has not been shown in Figure 4. Cold pressed meal shows a substantially higher proportion of the crude protein in the soluble fraction which has implications when using canola meal in combination with other feeds or by-products that have low SP.
This information is provided to by Cootamundra Oilseeds Pty Ltd to show you the unique characteristics of our cold pressed canola meal. If you have any questions or require further information please feel free to call the Cootamundra site.
References:
Ravindran, V. Hew, L.I. and Bryden, W.L. (1998). Digestible Amino Acids in Poultry Feedstuffs. RIRDC Publication No.98/9 Project No. US-67CM PRF Occasional Bulletin N0.4
Spragg, J.C. and Mailer, R.J. (2007). Canola Meal Value Chain Quality Improvement. A final report prepared for the AOF and Pork CRC. Project Code: 1B-103-0506.
For further information on the Canola Meal Value Chain Quality Improvement please follow the link below:
http://www.australianoilseeds.com/protein_meal
