SOY BEST

Nutrient Profile

The Soy Best® manufacturing process has been changed and improved. This has made it necessary to update Soy Best nutrient values for use in CPM-Dairy and other ration balancing programs.

Many scientists helped determine these values. The updated nutrient profile is listed below.

Beware: Nutrient values for many commercial products in CPM were submitted directly by the product manufacturer, without check samples and without vetting by CPM personnel. The Soy Best values are different – they are NOT from the manufacturer. Actual referee samples of Soy Best were submitted and assayed under CPM supervision. No one at Soy Best had a hand in the assays. This is an important distinction. Soy Best nutrient values in CPM are from independent scientists and published data. Nutrient values for most of the other commercial bypass products were submitted to CPM by the manufacturer without independent oversight and with no check samples. Details on the process used for handling the Soy Best samples are below.

Documentation in support of these nutrient values has been published in the Journal of Dairy Science (J. Dairy Sci., 2005, Vol. 83, Supp. 1, Abstract #86, page 90).


Crude Protein	% as is	43.716	C18:T	% of DM	0.000
Crude Fat	% as is	5.874	C18:1C	% of DM	1.354
Crude Fiber	% as is	5.800	C18:2	% of DM	3.075
Dry Matter	% as is	89.000	C18:3	% of DM	0.477
			Other	% of DM	0.077
Crude Protein	% of DM	49.120	Fat Type		1
Soluble Protein	% of DM	4.460
NPN	% of DM	2.400	Calcium	% of DM	0.310
ADIP	% of DM	0.800	Phosphorus	% of DM	0.650
NDIP	% of DM	8.480	Magnesium	% of DM	0.300
			Potassium	% of DM	2.280
Rumen Deg. Rate			Sulfur	% of DM	0.420
Pro A	% hour	10,000.000	Sodium	% of DM	0.010
Pro B1	% hour	145.000	Chloride	% of DM	0.020
Pro B2	% hour	4.000	Iron	mg/kg	140.000
Pro B3	% hour	0.200	Zinc	mg/kg	64.400
			Copper	mg/kg	14.400
Intestinal Dig. Rate			Manganese	mg/kg	38.200
Pro A	%	100.000	Selenium	mg/kg	0.000
Pro B1	%	100.000	Cobalt	mg/kg	0.000
Pro B2	%	100.000	Iodine	mg/kg	0.000
Pro B3	%	83.800
			Methionine	% of RUP	1.570
ADF	% of DM	7.140	Lysine	% of RUP	6.260
NDF	% of DM	26.000	Arginine	% of RUP	7.100
peNDF	% of DM	5.980	Threonine	% of RUP	3.970
Lignin	% of DM	0.960	Leucine	% of RUP	8.110
Cho B3	% hour	4.250	Isoleucine	% of RUP	4.840
Ash	% of DM	6.140	Valine	% of RUP	5.160
Ether Extract	% of DM	6.600	Histidine	% of RUP	2.670
NFC	% of DM	20.620	Phenylalanine	% of RUP	5.160
Cho A2 Sugar	% of DM	10.780	Tryptophan	% of RUP	1.530
Cho B1 Starch	% of DM	0.840
			Vitamin E	IU/lb	12.7†
Total Fatty Acid	% of DM	6.002	Phosphatidyl-Choline	% of DM	0.69†
C12:0	% of DM	0.000	Phophatidyl-Ethanolamine	% of DM	0.19
C14:0	% of DM	0.006
C16:0	% of DM	0.707	Protein Bypass	% of CP	73.3§
C16:1	% of DM	0.012	Estimated TDN	% of DM	86
C18:0	% of DM	0.294	Estimate NE-L	Mcal/lb	0.97

SAMPLING AND ASSAY PROCEDURE

This update was supervised by the CPM Ingredient Library Manager. Ten, 50-lb. samples of Soy Best were taken during September 2004 through February 2005, representing many production runs. The total 500 lbs. of samples was sent to the Ruminant Feed Analysis Consortium at the University of New Hampshire. RFAC personnel sent five sub-samples to Minor Institute. The CPM Ingredient Library Manager then supervised proximate analysis at Cumberland Valley Analytical Services, amino acid analysis at the University of Missouri-Columbia and fatty acid analysis at Clemson University. Rumen bypass protein measurements were made at West Virginia University and intestinal digestibility of bypass protein was measured at the University of Minnesota.

BYPASS PROTEIN VALUES

The 73.3% RUP value reported by West Virginia University is for a 16-hr rumen incubation in a lactating cow. RUP values reported by the University of Minnesota are calculated from the natural log of nitrogen disappearance over time (Mather and Miller, 1981, Br. J. Nutr. 45:587). RUP values from these two different procedures are not comparable (Bach et al., J. Animal Sci. 1998. 76:2885).

Footnotes
† Fresh soy gums are applied to Soy Best under non-ambient conditions, resulting in elevated vitamin E
and phosphatidyl-choline. Phosphatidyl-choline and methionine are both methyl group donors and
phosphatidyl-choline can spare methionine for milk protein synthesis. Ration balancing programs in use
today do not account for this important fact.

§ 16 hours in rumen (J. Dairy Sci. Vol. 83, Suppl. 1, Abst. #86, pg. 90). The protein bypass value for any
ingredient is not a fixed number and will vary with dry matter intake, rumen solids retention time,
rumen pH and rumen microbial population.

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