Dairyinfo July 2012

It is July and one of the hottest months of the year. As summer’s heat and humidity grow, so too do the resulting production losses and health risks for dairy cattle - challenges that often persist beyond the return of cooler weather in the fall. Today’s dairy cows begin to experience heat stress at lower temperatures than many people realize. Recently updated guidelines indicate that, for cows making 77+ lb of milk, production and reproductive losses begin at an average daily Temperature Humidity Index (THI) of 68 (73°F at 40% RH, or 68°F at 85% RH). Even in herds averaging less than 70 pounds of milk, remember that the high producing cows will be negatively affected, and so in turn will the bulk tank average.

Regular Mail:
Renaissance Nutrition, Inc.
PO Box 229
Roaring Spring, PA 16673

Overnight/Next Day:
Renaissance Nutrition, Inc.
339 Frederick Road
Roaring Spring, PA 16673


Phone: 1.800.346.3649
E-mail: rennut@rennut.com

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