Distillers Grains vs. EnerGII

Transcription

1 Distillers Grains Impacts of dietary fat level and saturation when feeding distillers grains to high producing dairy cows. Authors: J. M. Havlin 1, P. H. Roinson 1, and K. Karges 2 1 Department of Animal Science, University of California, Davis, CA, USA, and 2 POET Nutrition, Inc., Sioux Falls, SD, USA Journal of Animal Physiology and Animal Nutrition 1

2 Distillers Grains This experiment was conducted to determine whether increasing the net energy (NEL) of a total mixed ration (TMR) with mainly unprotected, unsaturated fat from corn distillers dried grains with solules (DDGS) rumen inert (RI) fat has similar impacts on animal performance. *J. M. Havlin, P.H. Roinson, et. al., University of California-Davis 2

3 Distillers Grains N= 1140 lactating cows 3 treatments with 380 early lactation, multiparous cows/treatment Incomplete Youden Square Design Four 28-day periods & followed cows through entire lactation Total experiment = 16 weeks Dakota Gold was used as the high protein/low fat distillers source. Average intake of was.8 l/d (same as average intake of fatty acids from typical distillers treatment). Typical distillers = 12% fat; Low fat (high protein) distillers = 5% fat 3

4 Distillers Grains CONTROL 5.8 l. Low Fat/ High Protein DDG TYPICAL DDGS 6.6 l. Typical DDGS (12% fat) ENERGII + LOWFAT DDGS.8 l. 5.8 l. Low Fat / High Protein DDG 4

5 Distillers Grains Milk Production Milk Fat Test Fat Corrected Milk Dry Matter Intake Body Condition Score Feed Efficiency Fatty Acid Digestiility Income Over Feed Cost 5

6 Distillers Grains a, P<.01 L./Day Low Fat 89.7 High Typical FatDDGS 94.6 a w Low Fat DDG +4 l +4.9 l Typical Distillers 6

7 Distillers Grains a,,c P<.01 % milkfat Low Fat 3.77 c High Typical FatDDGS 3.96 a w Low Fat DDG +.13% +.19% Typical Distillers 7

8 Distillers Grains a,,c P<.01 L./Day a c Low Fat High Typical FatDDGS w Low Fat DDG +6.2 l +8.1 l Typical Distillers 8

9 Distillers Grains a, P<.01 L./Day Low Fat 62.6 a Typical HighDDGS Fat DDGS 58.1 w Low Fat DDG +0.4 l -4.5 l Typical Distillers 9

10 Distillers Grains FCM per day/dmi per day Low Fat High Typical FatDDGS w Low Fat DDG Typical Distillers 10

11 Distillers Grains Income Over Feed Cost FCM$ per day/dmi$ per day $10.00 $8.00 $6.00 $4.00 $2.00 $0.00 $8.54 Low Fat $7.36 $9.19 High Typical FatDDGS w Low Fat DDG *Assumptions: $18.00/cwt milk price and $0.15 per l. feed cost across treatments, plus +$.10 additional cost/cow for typical distillers control and +$.40/cow for EnergII treatment control. $.66 $1.83 Typical Distillers 11

12 Distillers Grains a, P<.01 Body Condition Score Gain over 16 Weeks BCS Gain/16 weeks Low Fat 1.14 a High Typical FatDDGS 1.26 a w Low Fat DDG Typical Distillers 12

13 Distillers Grains Fatty Acid Digestion a, P<.01 % Digestiility Low Fat 84 a Typical HighDDGS Fat DDGS 85 a w Low Fat DDG +6% +1% Typical Distillers 13

14 Low Fat BENEFITS SUMMARY +.13 % Fat +6% Fatty Acid Digestiility +4 l Milk +0.4 l DMI +6.2 l FCM Income Over Feed Cost +.09 Feed Efficiency 14

15 High Fat Distillers BENEFITS SUMMARY +.19 % Fat Typical DDGS +1% Fatty Acid Digestiility +4.9 l Milk -4.5 l DMI +8.1 l FCM +.25 Feed Efficiency Income Over Feed Cost 15

16 Distillers Grains THE RESULTS: Partial Budget Analysis Typical DDGS REVENUE Fat Corrected Milk (ls.) Milk Price $18.00 $18.00 Milk Revenue $ COST Incremental Ration Cost $0.40 $0.30 Change in DMI (l.) Ration Cost/l. DM $0.15 $0.15 Incremental DMI Cost $0.06 $(0.68) Total Cost: $0.46 $(0.38) PROFIT $.66 $1.83 Total Profit/cow/day: Research Update $0.59 y $ Assumptions: Typical $250/ton; Low Fat Ration Cost: $0.15/l., Milk Price: $18/cwt.

17 Distillers Grains The diet with & Low Fat Distillers saw the greatest milk production, milk fat %, and fat corrected milk, all on similar intakes relative to the control with just low fat distillers. These gains in production efficiency were due primarily to the greater fatty acid digestiility in the diet. While the typical DDGS + Low Fat DDG treatments were equal in total fatty acids, the diet yielded 8.1 pounds more fat corrected milk and $1.83 cents greater income over feed cost. While typical DDGS may seem like an inexpensive ingredient at times, there are tremendous costs to production efficiency. 17