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Heat stress in dairy cattle
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Summer heat stress is a main factor related to low conception rates in high producing dairy herds in warm areas worldwide. A research group of UAB Faculty of Veterinary Medicine has studied the impact of several climate variables on conception rates in high producing dairy cows in northeastern Spain by examining 10,964 inseminations. Reproductive efficiency has suffered a dramatic decrease since the mid 1980s despite rapid worldwide progress in genetics and management of high...
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Heat stress is a fact of life for most dairymen ... one you know you will have to deal with come summertime. In hot, humid conditions cows simply feel less like eating and, hence, milk production drops. The effects of heat stress, however, tend to be seen long after the high temperatures cool. According to dairy nutrition experts, production losses can continue for the remainder of the lactation, and can mean a loss of 5, 10, or even 20 pounds of milk production per day for each day that...
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Effects of the Addition of NitroShure to Lactating Cow Diets on Microbial Efficiency and Metabolism in Continuous Culture of Rumen Contents
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With temperatures exceeding 36C in some parts of the UK over the last month, many people haven't needed to travel abroad this year in search of sun.
But many livestock are struggling to keep cool, dramatically affecting productivity.
Regardless of clear symptoms, heat stress clearly compromises cattle and sheep performance, says MLC beef and sheep scientist Liz Genever.
"Feed intakes and growth rates, ovulation and conception rates and bull and ram fertility are all likely to be...
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