Mateescu's Animal Genetics and Genomics Lab
Beef Cattle Thermotolerance
Climatic stress is a major limiting factor of production efficiency in beef cattle in tropical and subtropical environments and in dairy cattle throughout most of the world. This stress is expected to increase due to climate change. More than half of the cattle in the world are maintained in hot and humid environments, including about 40% of beef cows in the US. Substantial differences in thermal tolerance exist among breeds and among animals within breeds indicative of opportunities for selective improvement. For example, Bos indicus cattle exhibit increased resistance to many environmental stressors relative to Bos taurus, but tend to have slower growth, lower fertility and poor meat quality as they have not been as intensively selected for these traits as specialized Bos taurus breeds.
Use of genomic tools to produce an animal with superior ability for both thermal adaptation and food production represents an energy-efficient sustainable approach to meet the challenge of global climate change.
Kaitlyn Sarlo Davila, Serdal Dikmen, Eduardo Rodriguez, Tracy Scheffler, Pascal Oltenacu and R.G. Mateescu.
The Florida Cattleman & Livestock Journal. August 2020, Vol. 84, No. 11, pg. 50-51
Comparison of tympanic and tail temperatures in Angus and Brahman steers
Sarlo Davila K.M., A. Howell, A. Nunez, A. Orelien, V. Roe, E. Rodriguez, S. Dikmen, and R.G. Mateescu
Animal Genetics. doi: 10.1111/age.12970
Genome-wide association study identifies variants associated with hair length in Brangus cattle
Kaitlyn Sarlo Davila, Serdal Dikmen, and R.G. Mateescu.
The Florida Cattleman & Livestock Journal. July 2020, Vol. 84, No. 10
The effect of Brahman genes on body temperature of heifers on pasture under heat stress
Kaitlyn Sarlo Davila, Serdal Dikmen, Peter Hansen and R.G. Mateescu.
The Florida Cattleman & Livestock Journal. April 2020, Vol. 84, No. 7, pg. 50-51.
Hot or not: understanding what makes a thermotolerant heifer
Mateescu R.G., K.M. Sarlo Davila, S. Dikmen, E. Rodriguez, and P.A. Oltenacu
J. Anim. Sci. 1:98(5):skaa126. DOI: 10.1093/jas/skaa126
The effect of Brahman genes on body temperature plasticity of heifers on pasture under heat stress
Raluca Mateescu and Kaitlyn Sarlo Davila
The Florida Cattleman & Livestock Journal. March 2020, Vol. 84, No. 6, pg. 48-49.
Genomic research on Brahman-influenced cattle presented during Plant and Animal Genome Conference
By Becky Mills
Gulf Coat Cattlemen.
May 2019, pg. 33-34