August 2021
Tip of the Month:
Heat Stress Negatively Impacts Reproduction During and After Heat Events
- Heat stress decreases estrous duration, follicular growth, conception rates, and early embryo survival irrespective of use of AI or natural service.
- Heat stress 1 to 2 days before AI and during early pregnancy decreases fertility.
- Some reproductive physiologists estimate negative effects last 6 weeks past heat stress events.
- Bulls also have decreased fertility associated with heat stress and effects last well past heat stress events.
- These negative impacts reemphasize the need for fans and sprinklers in barns, at feedbunks, and in holding pens.
Diarrhea in Dairy Calves: Role of Supportive Therapy
Depending on the severity and cause of the diarrhea, calves can become dehydrated and, consequently should be given supportive electrolyte therapy. These electrolytes can help the calf cope with the extreme fluid loss resulting from the diarrhea and get them back on the road to recovery. The key is to know when and how to intervene and provide not only needed fluids, but also electrolytes (minerals) and energy to the calf.
Measuring the Success of a Dairy's Colostrum Management Program
By measuring the amount of antibodies (specifically immunoglobulin G - known as IgG) in a calf’s serum at 2 to 7 days of age, one can determine the success of newborn calf programs on a farm.