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Theodoros Ntallaris

Theodoros Ntallaris
I am a clinical academic especially interested in animal herd health issues, reproductive physiology, endocrinology and biotechnology

Presentation

My main area is in clinical academic medicine. My work is a combination of clinical work in the field with research and teaching responsibilities. 

Teaching

During my employment, I am the theme leader for the Obstretric course on the veterinary program. I am involved in teaching, working as a clinic veterinarian at the Ambulatory Clinic,  and supervising veterinary students in the field of reproduction.

Research

My research is focused on getting a better understanding of metabolism and the effects of the feed state and negative energy balance on reproduction. Special focus is givven on possible interrelationships between endocrine axis, energy deficit, and reproductive performance.

 

Background

Education and degree

2018 – PhD in veterinary medicine, Uppsala 2018

2013 – now  Resident at European College of Animal Reproduction (ECAR)

2010 – Additional education for veterinarians for receiving EU veterinary legitimation

2006 – Health Inspector, Sanitary Operation School, Athens Military Hospital

2006 – Specialist in obstetrics and artificial insemination, Belgrade

2003 - Degree in veterinary medicine, Belgrade

Supervision

MSc project, Alexandra Walfridsson: "Effect of time between euthanasia and sperm extraction on sperm quality of bull epididymal sperm". Main supervisor.

MSc project, Elin Wilén: " The Influence of Antimicrobial Agents on the Development of Antibiotic Resistance in the Vaginal Bacterial Flora of Inseminated Mares". Assisten supervisor.

MSc project, Elianna Natalie Alexandra Kantidenou: "Dama damas distribution, preservation and people’s awareness about the species in Rhodes, Greece". Main supervisor.

MSc project, Linda Hulling: "A clinical approach to uterine health in the postparturium period of the dairy cow". Assistant supervisor.

Selected publications

Dissertation:

Ntallaris, T. (2018). Impacts of feeding intensity and breed on metabolism, negative energy balance and reproductive efficiency in dairy cows. Diss. Uppsala: Swedish University of Agricultural Sciences. ISBN 9789177601746. 

 

Scientific articles:

Deori S, Ntallaris T, Wallgren M, Morrell JM, Johannisson A. (2022) Comparison of Single Layer Centrifugation and Magnetic Activated Cell Sorting for selecting viable boar spermatozoa after thawing. Livestock Sci In press

Comparison of Single Layer Centrifugation and Magnetic Activated Cell Sorting for selecting viable boar spermatozoa after thawing . Livestock Science

Bull seminal plasma stimulates in vitro production of TGF-β, IL-6 and IL-8 from bovine endometrial epithelial cells, depending on dose and bull fertility. Journal of Reproductive Immunology

Effects of Cashew Gum and Nanoparticles on Cooled Stallion Semen. Acta Vet Scand 

Effect of season on the in vitro fertilizing ability of frozen-thawed Spanish bovine spermatozoa. Journal of Dairy Science

Impact of the severity of negative energy balance on gene expression in the subcutaneous adipose tissue of periparturient primiparous Holstein dairy cows: Identification of potential novel metabolic signals for the reproductive system. PLoS One

Association of production diseases with motor activity-sensing devices and milk progesterone concentrations in dairy cows. Theriogenology

Effect of freezing bull semen in two non-egg yolk extenders on post-thaw sperm quality. Reprod Domest Anim

Involvement of plasma adipokines in metabolic and reproductive parameters in Holstein dairy cows fed with diets with differing energy levels  J. Dairy Sci.

Effect of energy balance profiles on metabolic and reproductive response in Holstein and Swedish Red cows Theriogenology

Husbandry Factors and the Resumption of Luteal Activity in Open and Zero-Grazed Dairy Cows in Urban and Peri-Urban Kampala, Uganda Reprod. Domest. Anim.

 See all publications at Google Scholar or Research gate

 

Abstracts:

113 Specific Impacts of Mild Feed Restriction on Gene Expression of Endometrial Luminal, Glandular and Stromal Cells in Postpartum Dairy Cows

W. Chankeaw, S. Lignier, M. Raliou, T. Ntallaris, C. Richard, Y. Guo, O. Sandra, G. Andersson, P. Humblot and G. Charpigny. Reproduction, Fertility and Development 30 (1), 196-196.

Effects of feed intensity and breed on postpartum blood metabolites.                         

Theodoros Ntallaris, Patrice Humblot, Ylva Sjunnesson, Renée Båge, Joëlle Dupont, Britt Berglund. Acta Veterinaria Scandinavica 2015, 57(Suppl 1):O12

Effects of feed intensity and breed on postpartum blood metabolites.

Ntallaris, T., Humblot, P., Sjunnesson, Y., Båge, R., Dupont, J., Berglund, B. 19th Annual Conference of the European Society for Domestic Animal Reproduction (ESDAR) Albena, Bulgaria, 17-19 Sept 2015, Reprod Dom Anim 50 (Suppl. 3), 42–83 (2015), p 69; doi: 10.1111/rda.12581.

 Bulk Milk Somatic cell count in open and zero-grazed dairy herds in urban and peri-urban Kampala, Uganda.                                                                                       

Ntallaris, T., Kanyima, B.M., Nassuna-Musoke, M., Owiny, D.O., Båge, R., Persson, Y.  Poster abstract. IDF World Dairy Summit, Vilnius, Lithuania. September 20-24, 2015.

 Efficiency in small-scale urban dairy production has potential to increase in Uganda.

Båge, R., Benon, K.M., Owiny, D.O., Nassuna-Musoke, M., Ntallaris, T., Lindahl, J., Humblot, P.,Magnusson, U.  Agriculture for food security post 2015 – the Role of Science. Agri4D conference 23-24 Sept 2015, Uppsala, Sweden, Proceedings p35

Do differences in nutrient prioritization affect reproductive performance of Holstein and Swedish Red cows?

Ntallaris, T., Humblot, P., Sjunnesson, Y., Båge, R., Dupont, J., Berglund, B. International Congress on Animal Reproduction (ICAR), Tours, France, June 26-30, 2016, Abstract book, p 384 (abstract).

Effect of soy lecithin and liposomes based extenders on bull sperm quality.

I Lima-Verde, A Johannisson, F Dórea, T Ntallaris, E Al-Essawe, Z Al-Kass, A Edman, JM Morrell. International Congress on Animal Reproduction (ICAR), Tours, France, June 26-30, 2016, Abstract book 86: 145-145.

 Effect of a high and low energy diets on metabolic and reproductive parameters in Holstein primiparous dairy cows

Mellouk Namya, Christelle Ramé, Jean-Luc Touzé, Eric Briant, Rozenn Dalbies-Tran, Theodoros Ntallaris, Patrice Humblot, Joëlle Dupont. , International Congress on Animal Reproduction (ICAR), Tours, France, June 26-30, 2016, Abstract book, p 676

 Effect of diet on energy balance and reproductive performance in primiparous Holstein and SRB cows.

Ntallaris, T., Humblot, P., Sjunnesson, Y., Båge, R., Berglund, B.  20th Annual Conference of the European Society for Domestic Animal Reproduction (ESDAR), Lisbon, Portugal, 19 October 2016, oral communication 3.4, DOI: 10.1111/rda.12800

 

Popular science:

Land Landbruk NR 37, 9 September 2016:  Holstein mjölkar mer än SRB

Husdjur NR 11, 16 November 2016: Holstein prioriterar mjölken

European College of Animal Reproduction Newsletter 2/2015

 

 


Contact

Clinical Veterinarian at the Ambulatory Clinic; Ambulatory Clinic, joint staff
Telephone: +4618671248
Postal address:
SLU, Institutionen för kliniska vetenskaper
Box 7054
750 07 UPPSALA
Visiting address: Ulls väg 26, Uppsala