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Heat stress killing cattle.
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<blockquote data-quote="Arnold Ziffle" data-source="post: 674758" data-attributes="member: 43"><p>Knersie, of course high daytime temperature is only one factor in the "heat" issue. Just as important, probably more, is the relative humidity. And then there is the issue of nightime cooling. Daytime temperatures of say 100 degrees along the very humid Gulf coast are a heck of a lot harder on humans, cattle, etc. than 100 degrees far inland where the humidity is much lower. In addition, hot & humid air doesn't cool off after sundown as readily as hot, dry air. Days of over 100 degrees plus very high humidity plus nightime temps that won't hardly get below 80 degrees (coupled with the highest humidity typically being at night) makes for a tough environment that bos indicus influenced cattle are generally better able to cope with than straight Brits or continentals. Based on my own anecdotal experiences, I've been more comfortable in 110 temperatures in west and north Texas than I am at 98 degrees down here around Houston and I imagine it's similar for cattle. And it works that way for cold weather too --- temperatures of below zero in Colorado and Calgary sure didn't feel as cold to me as 30 degrees above zero in the rice fields along the coast. The recent deaths in Kansas and Nebraska, I believe, have been due to the combination of high heat and unusually high hunidity (for the area), probably coupled with incorrect feeding practices for that type of weather.</p><p></p><p>What's the humidity like on those 115 degree days in RSA and what would a typical middle of the night temperature be after one of those days?</p></blockquote><p></p>
[QUOTE="Arnold Ziffle, post: 674758, member: 43"] Knersie, of course high daytime temperature is only one factor in the "heat" issue. Just as important, probably more, is the relative humidity. And then there is the issue of nightime cooling. Daytime temperatures of say 100 degrees along the very humid Gulf coast are a heck of a lot harder on humans, cattle, etc. than 100 degrees far inland where the humidity is much lower. In addition, hot & humid air doesn't cool off after sundown as readily as hot, dry air. Days of over 100 degrees plus very high humidity plus nightime temps that won't hardly get below 80 degrees (coupled with the highest humidity typically being at night) makes for a tough environment that bos indicus influenced cattle are generally better able to cope with than straight Brits or continentals. Based on my own anecdotal experiences, I've been more comfortable in 110 temperatures in west and north Texas than I am at 98 degrees down here around Houston and I imagine it's similar for cattle. And it works that way for cold weather too --- temperatures of below zero in Colorado and Calgary sure didn't feel as cold to me as 30 degrees above zero in the rice fields along the coast. The recent deaths in Kansas and Nebraska, I believe, have been due to the combination of high heat and unusually high hunidity (for the area), probably coupled with incorrect feeding practices for that type of weather. What's the humidity like on those 115 degree days in RSA and what would a typical middle of the night temperature be after one of those days? [/QUOTE]
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