By Blake Jackson
When milk fat yield decreases while other components and milk volume stay the same, several nutritional and management factors could be to blame. Dairy experts suggest beginning with a close evaluation of feed and cow comfort.
Milk fat depression can be caused by diet-related factors, especially changes in rumen pH and high levels of polyunsaturated fatty acids (PUFAs). Farmers should review if their feed contains excessive PUFAs, which may lower fat production. Starch concentration and digestibility are also key, as high-digestible starches may alter rumen fermentation.
Another area to examine is fibre content. Physically effective fibre is essential to maintain healthy rumen function. Buffers in the ration can help stabilize pH levels. Also, check if the total mixed ration (TMR) is being consistently blended and not allowing cows to sort out feed. A poorly mixed or sortable ration can impact nutrient intake.
Beyond feed, stress factors like heat, overcrowding, and feed shortages can reduce feed intake and lead to fat loss. Providing a calm, stress-free environment is crucial for consistent milk quality.
In addition to cow care, managing calf hutches effectively plays a major role in herd health. Calf hutches must protect calves from both extreme heat and cold. Factors like wind, temperature, humidity, and sunlight can influence calf comfort.
To prevent heat stress, make sure hutches have proper ventilation, are shaded, and placed with wind flow in mind. Feeding milk during cooler parts of the day and providing electrolytes and extra water helps young calves stay hydrated and healthy.
By reviewing these feeding strategies and housing practices, dairy farmers can protect milk production and promote the well-being of their herd’s youngest members.
Photo Credit: istock-cagkansayin
Categories: Wisconsin, Livestock, Dairy Cattle