Effects of EndophyteInfected Fescue on Animal Performance - PowerPoint PPT Presentation

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Effects of EndophyteInfected Fescue on Animal Performance

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Coping with Dirty Fescue. With spring calving herd--- Graze alternative crops in the summer ... Coping with Dirty Fescue. 4. Replace (especially when reseeding) ... – PowerPoint PPT presentation

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Title: Effects of EndophyteInfected Fescue on Animal Performance


1
Effects of Endophyte-Infected Fescue on Animal
Performance
Master Grazer Educational Program
2
Effects of Endophyte on Animals
  • Decreased feed intake
  • Decreased performance
  • Weight gain
  • Weaning weights
  • Milk production
  • Decreased reproductive performance
  • Increased body temperature

Master Grazer Educational Program
3
Effects of Endophyte on DMI and Gain of Grazing
Steers
Master Grazer Educational Program
4
Gain for Steers Grazing Fescue, Summary of 12
Trials
Journal of Animal Science
Master Grazer Educational Program
5
Effect of Endophyte and Intake of Steers Grazing
Fescue
Master Grazer Educational Program
6
Effects of the Endophyte on Performance (3 year
summary)
KY Progress Report 306, 1988 pg. 25
Master Grazer Educational Program
7
Endophyte affects young cows more severely
KY Field Day Report- 1985
Master Grazer Educational Program
8
Effect of endophyte infection
JAS 63 (Suppl.1)296, ALA Ag. Exp Station 33(4)15
Master Grazer Educational Program
9
Winter Performance of Heifers Fed Hay from 11/29
to 2/21
KY Progress Report 282- pg. 6
Master Grazer Educational Program
10
Effects of Endophyte Fescue on Grazing Management
and Grazing Responses
Master Grazer Educational Program
11
Endophyte decreases grazing time
Ref Agron. J. 76707
Master Grazer Educational Program
12
ADG of Cattle Grazing E. Infected Fescue with or
without Shade from 5/7 to 6/2
KY Progress Report 417- 1999 pg. 24
Master Grazer Educational Program
13
ADG and Body Temperature of Steers Grazing
Stockpiled Fescue from 11/11 to 12/22
KY Progress Report 282, pg. 6
Master Grazer Educational Program
14
Coping with Dirty Fescue
Master Grazer Educational Program
15
Coping with Dirty Fescue
  • 1. Dilution with clover---

Master Grazer Educational Program
16
Conception Rate of Cows Grazing Fescue over 4
years
KY Progress Report 282 pg.7
Master Grazer Educational Program
17
Coping with Dirty Fescue
  • With spring calving herd--- Graze alternative
    crops in the summer
  • Examples warm season grasses (Gamma grass,
    sorghum-sudan grass, green corn)

Master Grazer Educational Program
18
Coping with Dirty Fescue
  • 3. Keep vegetative seed heads highest
    concentration

Master Grazer Educational Program
19
Coping with Dirty Fescue
  • 4. Replace (especially when reseeding) E.
    infected fescue with
  • Novel endophyte fescue varieties
  • Endophyte free varieties
  • Other forage crops
  • Not always feasible

Master Grazer Educational Program
20
Coping with Dirty Fescue
  • 5. Refine management practices
  • Do not breed cows in summer
  • Calve in the fall versus spring

Master Grazer Educational Program
21
Effect of time of breeding on conception rate
with E. Infected Fescue, 2 year summary
KY 1996 Avg Days with temperature 90 June
10, July 19
Master Grazer Educational Program
22
Effect of Calving Season on Cow-Calf Productivity
Grazing E. Infected Fescue over 4 years
Master Grazer Educational Program
23
Coping with Dirty Fescue
  • 6. Free-choice Mineral Fescue Mineral
  • Cattle grazing fescue and other cool-season
    grasses are not receiving adequate Copper,
    Selenium, Manganese and other trace minerals from
    the forage.
  • The use of a high quality mineral supplement will
    improve performance.
  • This has nothing to do with overcoming the
    endophyte.

Master Grazer Educational Program
24
Coping with Dirty Fescue
  • 7. Additives
  • MTB-100 (Alltech)
  • Tasco (Acadian AgriTech)
  • Mix-30 (Agridyne)
  • Yeast-based product (ADM Alliance Nutrition)

Master Grazer Educational Program
25
MTB-100 Added to Free-Choice Mineral
Master Grazer Educational Program
26
Tasco Additive
Master Grazer Educational Program
27
MIX-30 on Reproduction of Beef Cows Grazing
Endophyte Fescue, Results
2002 KY Ruminant Nutrition Workshop, p. 7
Master Grazer Educational Program
28
Yeast-Based Product Supplied in Free-choice
Mineral
ADM Alliance Nutrition, MO Field Trial 7/3 to
10/20, 2004
Master Grazer Educational Program
29
Questions???
Master Grazer Educational Program
30
Supplements fed at a daily level of 6 pounds per
head
Master Grazer Educational Program
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