I work as a researcher and teacher and the Division of Reproduction, Department of Clinical Sciences
My teaching is in canine, feline, bovine and porcine reproduction
I also supervise veterinary students thesis work (MSc thesis).
I am course leader for the course in Medical Sciences during the veterinary education
My resaerch has been focused on sperm maturation and quality and intreactions between sperm and oviduct e.g. sperm maturation and conservation in felids.
My major reasech projects during last years have been about reproduction problems in organic piglet production including meaurments to decrease piglet mortality and effects of phytoestrogens in feed on sow reproduction.
My latest porject is about dystocia in guinea pigs in the Nordic countris.
Farm and Animal Health
I obtained my degree in veterinary medicine, SLU, Uppsala, 1995. Thereafter I spent 5 years mostly in private clinics with companion animals. I started my postgraduate studies 2001 at SLU, and defended my PhD in 2006 in Obstetrics and Gynecology.
In 2006 I became an ECAR (European College of Animal Reproduction) Diplomate in the area of ruminant reproduction and herd health and in 2012 docent (Associate professor) in reproduction
Consequences for Piglet Performance of Group Housing Lactating Sows at One, Two, or Three Weeks Post-Farrowing. Thomsson O, Sjunnesson Y, Magnusson U, Eliasson-Selling L, Wallenbeck A, Bergqvist AS. PLoS One. 2016 Jun 3;11(6)
Aggression and cortisol levels in three different group housing routines for lactating sows. Thomsson O, Bergqvist AS, Sjunnesson Y, Eliasson-Selling L, Lundeheim N, Magnusson U. Acta Vet Scand. 2015 Feb 18;57:9.
In vitro fertilization using frozen-thawed feline epididymal spermatozoa from corpus and cauda regions. Kunkitti P, Axnér E, Bergqvist AS, Sjunnesson Y.Theriogenology. 2016 Oct 1;86(6):1403-8.
The ability of feline spermatozoa in different epididymal regions to undergo capacitation and acrosome reaction. Kunkitti P, Bergqvist AS, Sjunnesson Y, Axnér E. Anim Reprod Sci. 2015 Oct;161:64-74
Macroscopic and microscopic evaluation of Eurasian lynx (Lynx lynx) female tubular reproductive organs in relation to ovarian structures. Axnér E, Holm D, Gavier-Widén D, Söderberg A, Bergqvist AS. Theriogenology. 2015 Sep 15;84(5):710-5.
Cryopreservation of epididymal cat spermatozoa: effects of in vitro antioxidative enzymes supplementation and lipid peroxidation induction. Thuwanut P., Chatdarong K., Johannisson A, Bergqvist A-S, Söderquist L, Axner E. Theriogenology, 2010.73, 1076-1087
The effects of antioxidants on semen traits and in vitro fertilizing ability of sperm from the flat-headed cat (Prionailurus planiceps), Thuwanut P, Chatdarong K, Bergqvist AS, Söderquist L, Thiangtum K, Tongthainan D, Axnér E. Theriogenology. 2011, 76 :115-25.
Cryopreservation-induced alterations in protein tyrosine phosphorylation of spermatozoa from different portions of the boar ejaculate. Kumaresan A, Siqueira AP, Hossain MS, Bergqvist AS. Cryobiology. 2011 Dec;63(3):137-44.
Quantification of kinetic changes in protein tyrosine phosphorylation and cytosolic Ca²⁺ concentration in boar spermatozoa during cryopreservation. Kumaresan A, Siqueira AP, Hossain MS, Johannisson A, Eriksson I, Wallgren M, Bergqvist AS. Reprod Fertil Dev. 2012;24(4):531-42.
Oviductal fluid modulates the dynamics of tyrosine phosphorylation in cryopreserved boar spermatozoa during capacitation. Kumaresan A, Johannisson A, Humblot P, Bergqvist AS. Mol Reprod Dev. 2012;79(8):525-40
Sperm function during incubation with oestrus oviductal fluid differs in bulls with different fertility. Kumaresan A, Johannisson A, Bergqvist AS. Reprod Fertil Dev. 2016 Apr 26.
Detection of Fas ligand in the bovine oviduct. Bergqvist A-S, Killian G, Erikson D, Hoshino Y, Båge R, Sato E & Rodríguez-Martinez H. Anim Reprod Sci. 2005 Mar; 86(1-2):71-88.
Hyaluronan and its binding proteins in the epithelium and intraluminal fluid of the bovine oviduct. Bergqvist AS, Yokoo M, Heldin P, Frendin J, Sato E, Rodriguez-Martinez H. Zygote, 2005.13 (3); 207-218.
In vitro capacitation of bull spermatozoa by oviductal fluid and its components. Bergqvist AS, Ballester J, Johannisson A, Hernández M, Lundeheim N & Rodríguez-Martínez, H. Zygote 2006:14(3):259-73.
Reproductive performance in high-producing dairy cows: can we sustain it under current practice Rodriguez-Martinez H, Hultgren J, Båge R, Bergqvist A.-S, Svensson C, Bergsten C, Lidfors L, Gunnarsson S, Algers B, Emanuelson U, Berglund B, Andersson G, Håård M, Lindhé B, Stålhammar H. & Gustafsson H. IVIS Reviews in Veterinary Medicine, 2008, I.V.I.S. (Ed.). International Veterinary Information Service, Ithaca NY
Single layer centrifugation of stallion spermatozoa through Androcoll™-E does not adversely affect their capacitation-like status, as measured by CTC staining. Bergqvist AS, Johannisson A, Bäckgren L, Dalin AM, Rodriguez-Martinez H, Morrell JM. Reprod Domest Anim. 2011;46 (1):e74-8.