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The cascade effect – there’s more to scours than diarrhea

Key Takeaway: The article discusses the critical first hour after a calf's birth, emphasizing its importance for immune system development. It highlights that while many calves thrive, up to 20% may suffer from neonatal diarrhea, leading to a series of health complications and economic losses for dairy producers. Experts from First Defense provide insights into prevention strategies and the broader implications of scours.
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POSITIVE FACTORS

  • Emphasizes the importance of the first hour of birth for calf health.
  • Highlights strategies to prevent neonatal diarrhea effectively.
  • Raises awareness about the economic impact of calf illnesses.

CONCERNS & RISKS

  • Up to 20% of calves may suffer from neonatal diarrhea.
  • Illness can lead to a cascade of health issues and economic losses.

Full Press Release Details

The first hour of birth sets the stage for a calf’s life. Those 60 minutes are critical for the calf to absorb antibodies essential to a strong immune system. Although some newborns quickly succumb to disease, most stay healthy and experience a productive life. But up to 20 percent become ill with neonatal diarrhea (scours) and go on to suffer a cascade of illness resulting in economic loss for the dairy and personal frustration for producers.
Bobbi Jo Brockmann First Defense VP of sales and marketing and Mark Wustenberg, DVM, the company’s commercial leader of stakeholder engagement explain both the short- and long-term costs of diarrhea with a focus on the cascade effect: more than diarrhea, a weakened immune system, rise in death and illness risk, reduced average daily gain (ADG), late first calving, reduction in milk yield during the first lactation and potential for intestinal damage,
Read more about the cascade effect and, importantly, how to prevent scours in the first place
This post originally appeared in Progressive Dairy magazine.

Frequently Asked Questions

What is the cascade effect in calves?

The cascade effect refers to the series of health issues that arise from neonatal diarrhea, impacting growth and immune function.

How can scours be prevented in calves?

Preventing scours involves ensuring calves absorb antibodies within the first hour of birth.

What are the economic impacts of neonatal diarrhea?

Neonatal diarrhea can lead to significant economic losses for dairy producers due to increased illness and reduced milk yield.

What percentage of calves suffer from neonatal diarrhea?

Up to 20% of calves may experience neonatal diarrhea, leading to various health complications.

Last updated: Nov 24, 2025