David Barrett

Assistant Professor, Animal Physiology


Related information

Department of Animal Science and Aquaculture

Email: david.barrett@dal.ca
Phone: (902) 896.2305
Mailing Address: 
Department of Animal Science and Aquaculture
Faculty of Agriculture
Agricultural Campus
PO Box 550
Truro, NS, B2N 5E3
Research Topics:
  • Controlled breeding protocols (ovarian follicular wave, heat, and ovulation) for sheep and cattle
  • Effects of beneficial fatty acids (omega-3 polyunsaturated fatty acids and conjugated linoleic acid) on reproductive performance
  • Effects of phytoestrogens, from clover and soybean, on reproductive performance



  • B.Sc. (Hon.) (Memorial)
  • MSc (University of Saskatchewan)
  • PhD (University of Saskatchewan)

Research interests

  • Controlled breeding
  • Nutrition
  • Exogenous steroidogenic compounds


  • ANSC3006: Companion Animal Biology
  • BIOL3008: Growth, Reproduction and Lactation
  • SPEC4000: Special Topics in Animal Science or Aquaculture


Selected publications

  • DMW Barrett, PM Bartlewski, R Duggavathi, KL Davies, SL Huchkowsky, T Epp, & NC Rawlings (2008). Synchronization of follicular wave emergence in the seasonally anestrous ewe: The effects of estradiol with or without medroxyprogesterone acetate. Theriogenology 69(7): 827-36.
  • S Madgwick, ET Bagu, R Duggavathi, PM Bartlewski, DMW Barrett, S Huchkowsky, SJ Cook, AP Beard, & NC Rawlings (2008). Effects of treatment with GnRH from 4 to 8 weeks of age on the attainment of sexual maturity in bull calves. Anim. Reprod. Sci. 104 (2-4): 177-88.
  • DMW Barrett, R Duggavathi, KL Davies, PM Bartlewski, ET Bagu, & NC Rawlings (2007). Differential effects of various estradiol-17β treatments on follicle-stimulating hormone peaks, luteinizing hormone pulses, basal gonadotropin concentrations, and antral follicle and luteal development in cyclic ewes. Biol. Reprod. 77(2): 252-62.