On average, how many weeks after freshening does a cow's dry matter intake peak?

The correct answer is that a cow's dry matter intake typically peaks around 12-14 weeks after freshening. This period is crucial in the lactation cycle as cows undergo significant physiological changes that influence their dietary needs.

After freshening, or calving, the cow experiences an increase in energy demands due to milk production. Initially, her dry matter intake may lag slightly behind this increased demand, resulting in a negative energy balance. As she settles into her lactation, typically around the 12 to 14-week mark, her body adjusts, and her appetite increases, leading to a peak in dry matter intake. This peak is essential for optimal milk production and overall health.

The timing of this peak is influenced by factors such as the cow's health, milk production levels, and management practices, all of which can vary among herds but generally align around this timeframe. Understanding these patterns helps in proper nutritional management to enhance productivity and longevity in dairy cows.