coping with alfalfa winterkill professor randy shaver department of dairy science university of...
TRANSCRIPT
![Page 1: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/1.jpg)
Coping With Alfalfa Winterkill
Professor Randy ShaverDepartment of Dairy Science
University of Wisconsin - Madison
University of Wisconsin - Extension
![Page 2: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/2.jpg)
Coping With Alfalfa Winterkill
Nutrition & Crop Advisor & Supplier relationships
Feed Inventory
Current & Projected (rolling) Projected Needs
Minimize Shrink
![Page 3: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/3.jpg)
Coping With Alfalfa Winterkill
Alternative Forages Winter Wheat or Rye Oats or Oats & Peas
Reduced Forage Diets Minimum Forage Guidelines Forage Replacers
High Corn Silage Diets
![Page 4: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/4.jpg)
Alternative Forages
![Page 5: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/5.jpg)
Average forage quality values for oats harvested at different maturity stages (Rankin, UWEX-FDL, 2003)
HarvestStage CP% NDF%
Boot 16 - 18 52 - 54
Heading 14 - 16 56 - 58
Milk 12 - 14 59 - 61
Dough 10 - 12 59 - 61
![Page 6: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/6.jpg)
Impact of Small-Grain Silage MaturityArieli & Adin, JDS, 1994
Item Early Cut Late Cut
Milk Yield, lb/d 79 72
11 days between early and late cut
![Page 7: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/7.jpg)
Reduced Forage Diets
![Page 8: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/8.jpg)
Min NDF - Forage Min NDF - Diet Max NFC - Diet
19% 27% 42%
18% 27% 42%
17% 29% 40%
16% 31% 38%
15% 33% 36%
NRC-01
![Page 9: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/9.jpg)
%Diet forage to meet minimum NDF from forage
Min. NDF-F 40% NDF 45% NDF 50% NDF
19% 48% 42% 38%
17% 43% 38% 34%
15% 38% 33% 30%
![Page 10: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/10.jpg)
Silage Replacement
![Page 11: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/11.jpg)
Ingredient
NDF% of DM
pef% NDF
peNDF% of DM
Replacedper lb. DM
Replacedby 5 lb.
DM
Replaced Haylage
Medium Chop Length 45 85 38.3 -- --
Replacement Feeds
Chopped Straw 73.0 110 80.3 2.1 10.5Chopped Hay 55 95 52.3 1.4 7.0
Beet Pulp 45.8 30 13.7 0.4 2.0Brewers Grains 47.4 40 19.0 0.5 2.5
Corn Gluten Feed 35.5 40 14.2 0.4 2.0Cottonseed Hulls 85.0 90 76.5 2.0 10.0Distillers Grains 38.8 40 15.5 0.4 2.0
Malt Sprouts 47.0 40 18.8 0.5 2.5Soybean Hulls 60.3 30 18.1 0.5 2.5
Wheat Middlings 36.7 40 14.7 0.4 2.0Whole Cottonseed 50.3 90 45.3 1.2 6.0
![Page 12: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/12.jpg)
By-Product Break-Evens
![Page 13: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/13.jpg)
![Page 14: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/14.jpg)
How much to feed? Feeding limits
i.e. DDG at 10 to 20% of diet DM a reasonable target depending upon diet formulation constraints
• i.e. High Fat & P and Low Lysine impediments to higher inclusion rates
Least cost ration formulation for specified nutrients i.e. CP, RUP, NDF, Starch, Fat, NEL, etc., etc.
![Page 15: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/15.jpg)
Ingredient
Suggested Limitslb. DM per cow per day
Beet Pulp 8 - 12
Brewers Grains 5 - 10Corn Gluten Feed 10 - 15Cottonseed Hulls 5 - 10Distillers Grains 5 - 10
Malt Sprouts 5 - 10Soybean Hulls 8 - 12
Wheat Middlings 8 - 12Whole Cottonseed 5 - 8
![Page 16: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/16.jpg)
High Corn Silage Diets
![Page 17: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/17.jpg)
80 to 98% starch digestibility•Kernel particle size•Duration of silage fermentation•Kernel maturity •Endosperm properties
40 to 70% I VNDFD•Lignin/ NDF•Hybrid
•Maturity
Grain ~40- 45% of WPDMStover= ~55- 60% of WPDM
• Avg. 42% NDF• Variable stover:grain
Whole- Plant Corn Silage
•Avg. 30% starch in WPDM•Variable grain:stover
Variable peNDF as per chop lengthAdapted from Joe Lauer, UW Madison Agronomy Dept.
![Page 18: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/18.jpg)
Kernel Processing Score
∆Worth 2 lb. Milk or 2 lb. Corn
![Page 19: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/19.jpg)
Corn Silage Fermentation Increases Starch Digestibility
![Page 20: Coping With Alfalfa Winterkill Professor Randy Shaver Department of Dairy Science University of Wisconsin - Madison University of Wisconsin - Extension](https://reader035.vdocuments.site/reader035/viewer/2022062803/56649caf5503460f94972ca2/html5/thumbnails/20.jpg)
Visit UW Extension Dairy Cattle Nutrition Website
http://www.uwex.edu/ces/dairynutrition/