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Heat stress in dairy cattle nutrition

Level 2 - Lead Farmers

Introduction

1. You will learn about...

2. Introduction

3. Factors that influence heat stress

4. Environmental factors

5. Environmental factors: Transporting cows

6. Cow factors: Heat produced from within the cow

7. Cow factors: Stage of lactation

8. Early signs of heat stress

9. Effects of heat stress in dairy cows

10. Effects of heat stress in dairy cows cont'd...

11. Heat stress affecting dry matter intake (DMI)

12. Heat stress affecting dry matter intake (DMI) cont'd...

13. Effects of reduced/depressed dry matter intake (DMI)

14. Dry matter intake (DMI) management during heat stress

15. Dry matter intake (DMI) management during heat stress cont'd...

16. How cows lose heat

17. Humidity

18. Evaporation for heat loss

19. Panting

20. Increased sweating

21. Increased water intake

22. Change in milk production and composition

23. Reduced weight and body performance

24. Preventing heat stress

25. Cow barn as a prevention measure

26. Take home messages/Summary