Yes, Kathie, we don't have nearly the heat and humidity of the midwest or south. But since cattle start experiencing early heat stress at around 70 degrees, it can still affect ours when it gets into the 90's. Fortunately we also lack humidity. I suggested red angus for my sister even up in Alberta. Why not, as it can get pretty warm there. Interesting that Canada has both reds and blacks in their angus registry. I believe I've heard the AAA picked blacks only because angus was the only common breed with blacks, and black is a dominant trait, so they could easily tell cattle that have angus in them?
My daughter's ex-boyfriend at a nearby military base was from Oklahoma. He mentioned the big heat his folks were having last summer, so I started watching their temps and saw many days of 108 degrees. Wondered how cattle could survive such, especially with the humidity. Then inbredredneck mentioned how he lost many in a feedlot from heat, and lost a much higher percentage of blacks, which is what I've read elsewhere.
Don't forget that there is such a thing as heat acclimation. Cattle like people learn to live with it in the South/Southwest. Black do better than you'd ever believe to. It's not comfortable by any means but you do learn to function quite well in the heat. If you're in the NW your cattle simply never have a chance to become acclimated to heat to any degree and really suffer when you do get the occasional hot day.
If there isn't much difference in carcass, you'd think the reds would have an advantage in most of the country. Sounds like just a matter of marketing. You could market the increased heat tolerance, which affects profits also, as this article points out.
http://www.cattletoday.com/archive/2007 ... 1033.shtml