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Can Cows Be Improved Genetically for Better Heat Tolerance? |
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Author: Misztal |
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State: GA Year: 1999 |
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Excerpt: If sires that are more heat tolerant for production are also more heat tolerant for reproduction, dairy producers in GA & other SE states may be able to select sires giving considerable higher profit than current top TPI sires.
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DNA Chips Boost Dairy Research: Gene microarrays target heat stress in cows |
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Author: Collier, McGinley |
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State: AZ Year: 2000 |
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Excerpt: A University of Arizona program underway in the Department of Animal Sciences uses DNA microarrays to identify genes related to susceptibility as well as resistance to heat stress in cattle. The genes in this library, numbering in the thousands, wil
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How Do Different Breeds Compare on Hot Summer Days? |
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Author: Haenlein |
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State: DE Year: 1998 |
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Excerpt: For example, the Jersey cow, although smaller than the Holstein, has a larger body surface area relative to her bodyweight, so she can get rid of more body heat when necessary.
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Impact of Genetics on Heat Tolerance |
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Author: Rogers |
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State: TN Year: 2003 |
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Excerpt: Currently, breed selection or crossing with a productive & heat tolerant breed may be the best way to genetically alter heat tolerance in very hot climates but be sure to consider all the other attributes of a new breed or breed cross.
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Impact of Hair Coat Differences on Rectal Temperature, Skin Temperature, & Respiration Rate of Holstein X Senepol Crosses in Florida |
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Author: Olson, Avila-Chytil, Chase, Hansen, Coleman |
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State: FL Year: 2002 |
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Excerpt: The effect of hair type on rectal temperature, skin temperature, respiration rate, & feed intake under confinement in ¾ Holstein: ¼ Senepol crossbred cattle was studied during the summer of 2000 at two locations in Florida.
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Researchers Study Heat Tolerance of Senepol Cattle |
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Author: Olson |
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State: FL Year: 2001 |
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Excerpt: Evidence from several sources encourages us regarding the existence of a hair length/heat tolerance gene. The impact of the slick hair gene appears to be quite dramatic in the grazing dairy in Puerto Rico where the slick-haired Holsteins were observed.
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