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Effects of Endophyte-Infected Fescue on Animal Performance

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

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Effects of Endophyte-Infected Fescue on Animal Performance

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  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. Effects of the Endophyte on Performance (3 year summary) KY Progress Report #306, 1988 pg. 25 Master Grazer Educational Program

  6. Endophyte affects young cows more severely KY Field Day Report- 1985 Master Grazer Educational Program

  7. Effect of % endophyte infection JAS 63 (Suppl.1):296, ALA Ag. Exp Station 33(4):15 Master Grazer Educational Program

  8. Winter Performance of Heifers Fed Hay from 11/29 to 2/21 KY Progress Report #282- pg. 6 Master Grazer Educational Program

  9. Effects of Endophyte Fescue on Grazing Management and Grazing Responses Master Grazer Educational Program

  10. Endophyte decreases grazing time Ref: Agron. J. 76:707 Master Grazer Educational Program

  11. 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

  12. 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

  13. Coping with “Dirty Fescue” Master Grazer Educational Program

  14. Coping with Dirty Fescue 1. Dilution with clover--- Master Grazer Educational Program

  15. Conception Rate of Cows Grazing Fescue over 4 years KY Progress Report #282 pg.7 Master Grazer Educational Program

  16. 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

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

  18. 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

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

  20. 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

  21. Effect of Calving Season on Cow-Calf Productivity Grazing E. Infected Fescue over 4 years Master Grazer Educational Program

  22. 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

  23. 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

  24. MTB-100 Added to Free-Choice Mineral Master Grazer Educational Program

  25. Tasco Additive Master Grazer Educational Program

  26. MIX-30 on Reproduction of Beef Cows Grazing Endophyte Fescue, Results 2002 KY Ruminant Nutrition Workshop, p. 7 Master Grazer Educational Program

  27. Yeast-Based Product Supplied in Free-choice Mineral ADM Alliance Nutrition, MO Field Trial 7/3 to 10/20, 2004 Master Grazer Educational Program

  28. Questions??? Master Grazer Educational Program

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