Dr jeff lehmkuhler extension beef specialist university of kentucky 2009 anr update
This presentation is the property of its rightful owner.
Sponsored Links
1 / 9

Dr. Jeff Lehmkuhler Extension Beef Specialist University of Kentucky 2009 ANR Update PowerPoint PPT Presentation


  • 97 Views
  • Uploaded on
  • Presentation posted in: General

General Nutrition Updates Cowculator for Rations. Dr. Jeff Lehmkuhler Extension Beef Specialist University of Kentucky 2009 ANR Update. Mineral Issues. Coproducts – Feeding Corn Gluten Feed and/or Fuel Ethanol derived Distillers Grains Need add’l Calcium

Download Presentation

Dr. Jeff Lehmkuhler Extension Beef Specialist University of Kentucky 2009 ANR Update

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


General Nutrition Updates

Cowculator for Rations

Dr. Jeff Lehmkuhler

Extension Beef Specialist

University of Kentucky

2009 ANR Update


Mineral Issues

  • Coproducts – Feeding Corn Gluten Feed and/or Fuel Ethanol derived Distillers Grains

    • Need add’l Calcium

    • If = or > than 20% of Diet DM, no PhosSuppl

    • Looking at ~ 1 to 1.5% limestone or a 20-25% Ca mineral supplement

    • Sulfur – Can exceed max tolerable levels (0.4%) increasing risk to polioencephalomalacia (PEM) or “Brainers” – Hydrogen Sulfide as toxic as cyanide


Sulfate Reduction in the Rumen

H2S and S2-

High Sulfur / Sulfate Intake

(Feed + Water)

Eructation

H2S Inhalation

Lung Tissue Damage

Cell Damage

S2- Absorption

?

PEM

Secondary Viral or Bacterial Infections

Poor Animal Performance

Adapted from Kung et al. 1998


Prevention = Manage Risk

  • Provide a balanced ration – Threshold 0.40% S

  • Use of a coproduct specific mineral / supplement package

  • Thiamine may assist - Most coproduct supplements contain thiamine, may not work

  • Avoid use of high sulfate water – blend and/or restricted use of coproduct feeds


Mineral Demo Update

  • Strategic Supplementation of Beef Cows / Stockers

  • Concerns over Environment + Economics

  • Looking for Agents + Producer herds

    • Contact me later if interested


2009 Demonstration Farms

Lactating

Dry


Strategic P Supplementation

  • Cow Herd w/ Managed Pasture Fertility

  • Using a Custom Trace Mineral Salt Mix

  • Monitor Intake of Mineral, Forage P Conc.

Pre-Calving

Calving

3-6% P & Hi-Mag

Breeding / End

1 – 3% P

2 – 0% P

Wean / Gestation

1 – 0% P

2 – 3% P


Cowculator

  • Oklahoma State University

  • Ration software for Beef Cows

  • Based on Recent Beef NRC

  • Not as detailed output as UK Beef Ration

    • Advised to use as an Evaluator


Cowculator

  • Download at:

    • http://www.ansi.okstate.edu/exten/cowculator/

  • Excel based spreadsheet


  • Login