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Fetal Programming: Effects of Gestational Nutrition on Cowherd Fertility and Longevity

Department of Animal Sciences. Fetal Programming: Effects of Gestational Nutrition on Cowherd Fertility and Longevity. Kimberly A Vonnahme, PhD Reproductive Physiologist February 11, 2010. NDSU Animal Nutrition and Physiology Center. Acknowledgements. Collaborators at NDSU Joel Caton

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Fetal Programming: Effects of Gestational Nutrition on Cowherd Fertility and Longevity

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  1. Department of Animal Sciences Fetal Programming: Effects of Gestational Nutrition on Cowherd Fertility and Longevity Kimberly A Vonnahme, PhD Reproductive Physiologist February 11, 2010

  2. NDSU Animal Nutrition and Physiology Center Acknowledgements • Collaborators at NDSU • Joel Caton • Larry Reynolds • Dale Redmer • Anna Grazul-Bilska • Justin Luther • Carrie Hammer • Greg Lardy • Kasey Carlin • Eric Berg • Other collaborators • Rick Funston—UNL • Bret Taylor—USDA-ARS SES

  3. OUTLINE • What is Developmental Programming? • Can maternal intake really influence the reproductive success of her offspring?

  4. Phenotype • Classic Animal Breeding Example • Phenotype = Genotype + Environment Eg. Milk production = Holstein genetics + Mastitis

  5. Phenotype • Future Animal Breeding Example • Phenotype = Genotype + Environment Eg. Yield grade= Angus genetics + Protein supplementation in utero

  6. The Maternal Environment

  7. Programming • The process through which a stimulusor insultestablishes a permanentresponse • Developmental programming hypothesis • Exposure during a critical period in development may influence later metabolic or physiological functions in adult life

  8. Protein supplementation During Late Pregnancy Impacts on female progeny reproductive success

  9. 3 yrs: Gudmundsen Sandhills (n=170 heifer calves) Cows bred No supplement (NoProt) Protein (Prot) 0.45 kg/d 42% CP LG 12/1 – 2/28

  10. 3 yrs: Gudmundsen Sandhills (n=170 heifer calves) Cows bred No supplement (NoProt) Protein (Prot) 0.45 kg/d 42% CP LG 12/1 – 2/28 Ave calving date =March 27

  11. 3 yrs: Gudmundsen Sandhills (n=170 heifer calves) Cows bred No supplement (NoProt) Protein (Prot) 0.45 kg/d 42% CP LG 12/1 – 2/28 Ave calving date =March 27 Cool season grass hay (HAY) Sub-irrigated meadow (MDW) EL 5/1 – 5/30

  12. Growth Performance

  13. Growth Performance

  14. Growth Performance

  15. Reproductive Performance

  16. Reproductive Performance

  17. Reproductive Performance

  18. What’s Happening?? Ovaries?? Uterus?? Brain??

  19. Fetal Ovaries

  20. Future Directions • Time period of supplementation • Specific nutrients that are important • Maternal efficiencies • Factors that impact uterine and placental blood flow

  21. Developmental Programming • IMPORTANT TO ANIMAL HEALTH AND PRODUCTIVITY: • Growth and nutrient transfer • Reproductive capacity • Aging and lifetime productivity

  22. Goal: Healthy Offspring!!!

  23. NDSU Animal Nutrition and Physiology Center Acknowledgements Vonnahme, March 2008

  24. LARSON ET AL., JOURNAL OF ANIMAL SCIENCE • Objective: Impacts of male progeny from cows • grazing winter range vs. corn crop residue • with or without protein supplementation • Pregnant 3 year olds • 2005 (109 cows) • 2006 (114 cows) • 2007 (116 cows)

  25. Steer Data

  26. Vonnahme, February 2009

  27. Nutrition during pregnancy impacts on milk yield

  28. Selenium during pregnancy effects on milk yield

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