David B. Crenshaw, Ph.D. Interim Department Head Professor of Animal Science Department of Agricultural Sciences Texas A&M University-Commerce Commerce , Texas 75429-3011 Tele: 903-886-5351 Fax: 903-886-5990

E-mail address: David_Crenshaw@tamu-commerce.edu

Education:

B.S. in Agriculture major in Animal Science, University of Missouri

M.S. in Animal Breeding, University of Missouri

Ph.D. in Animal Cytogenetics, University of Missouri

Teaching:

Dr. Crenshaw teaches courses in genetics, reproductive physiology, and animal science management techniques. Follow this link for a complete listing of departmental courses and course descriptions.

Research Activities:

• The effects of White Clover Varieties with and without Rye/Ryegrass on Puberty in Beef Heifers.
• The effects of Rye/Ryegrass or Wheat on Puberty and Weight gains in Beef Heifers.
• Follicular Waves as Influenced by Winter Grazing Regimes.

• Nutritional flushing and hormone treatments on the onset of breeding and multiple ovulations in Boer goats

• The influence of nutriceuticals and seminal additives on lifespan of cooled stallion semen.

• The influence of low cost lighting sources on onset of estrus in out of season mares.

• Efficacy of nutritional additives on the occurrence of internal parasites in the Boer goat.

• Tracking of follicular waves and early embryo development in the Boer goat.

Service Activities:

• Member Faculty Senate

• Advisor to Pre-Vet Society

• Co-advisor to Wildlife Society

• Chair of Arts and Sciences Promotion and Tenure Committee

• Member of OARR Committee (Orientation, Advisement, Recruitment and Registration).

• Faculty Academic Advisor for the Department of Agricultural Sciences.