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Dr. Siobhan Walsh  BAgrSc, MAgrSc, PhD

Title:

Lecturer in Agricultural Science

School/ Department:

School of Science & Computing - Dept of Science

Telephone:

+353 0 51 302290

Room Name/ Num:

FTG03 T- Block/ FTG Rooms

Campus:

Main Campus

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My Biography

Dr. Siobhán Walsh is a Lecturer within the Dept. of Chemical and Life Sciences. Having completed a BAgrSc in Animal Science from UCD, Siobhán undertook a research Masters based in Teagasc Moorepark – Animal & Grassland Research and Innovation Centre. Her research focused on the effects of breed and feeding system on milk production, udder health and fertility performance across two grass based feeding systems in Ireland. Following the MAgrSc, she pursued a PhD in the School of Agriculture and Food Science in UCD investigating factors that affect ovarian follicle development. Specifically, her studies investigated the role of the ovarian follicle in successful reproduction using animal models of low and high fertility.

Research

PUBLICATIONS


PEER REVIEWED PAPERS:

Mossa F, Carter F, Walsh SW, Kenny DA, Smith GW, Ireland JLH, Hildebrandt TB, Lonergan P, Ireland JJ, Evans ACO. Maternal undernutrition in cows impairs ovarian and cardiovascular systems in their offspring. Biology of Reproduction, 2013, 88, 1-9.

Walsh SW, Fair T, Browne JA, Evans AC, McGettigan PA. Physiological status alters immunological regulation of bovine follicle differentiation in dairy cattle. Journal of Reproductive Immunology. 2012, 96, 34-44.

Evans A, Mossa F, Walsh SW, Scheetz D, Jimenez-Krassel F, Ireland J, Smith G, Ireland J. Effects of maternal environment during gestation on ovarian folliculogenesis and consequences for fertility in bovine offspring. Reproduction in Domestic Animals, 2012, 47 Suppl 4, 31-37

Walsh SW, Matthews D,  Browne JA, , Diskin M, Forde N, Crowe MA, Evans ACO. Acute dietary restriction in heifers alters mRNA expression of genes regulating exposure and response to gonadotrophins and IGF in dominant follicles. Animal Reproduction Science, 2012, 133, 43-51

Mossa F, Walsh SW, Butler ST, Berry DP, Carter F, Lonergan P, Smith GW, Ireland JJ, Evans ACO. Low numbers of ovarian follicles ≥3 mm in diameter are associated with poor fertility in dairy cows. Journal of Dairy Science, 2012, 95(5):2355-61

Walsh SW, McGettigan P, Browne JA, Mehta JP, Forde N, Alibrahim R, Mulligan F, Bender K, Mihm MM, Loftus B, Crowe MA, Matthews D, Diskin M, Evans ACO. Effect of the metabolic environment at key stages of follicle development in cattle: focus on steroid biosynthesis. Physiological genomics, 2012, 44, 504-517

Evans ACO and Walsh SW. The physiology of multifactorial problems limiting the establishment of pregnancy in dairy cattle. Reproduction, Fertility and Development, 2012, 24, 233-237

Walsh SW, Williams EJ, Evans ACO.A review of the causes of poor fertility in high milk producing dairy cows. Animal Reproduction Science, 2011, 102, 122-126.

Swangchan-Uthai T, Walsh SW, Alexander SLH, Cheng Z, Crowe MA, Evans ACO, Wathes DC. Comparison of mRNA for insulin-like growth factors and their binding proteins in the oviduct during the peri-oestrous period between dairy heifers and lactating cows. Reproduction, 2011, 142:457-465

Bender K, Walsh SW, Evans ACO, Fair T, Brennan L. Metabolite concentrations in follicular fluid may explain differences in fertility between heifers and lactating cows. Reproduction, 2010, 139, 1047-1055

Mossa F, Jimenez-Krassel F, Walsh S, Berry DP, Butler ST, Folger J, Smith GW, Ireland JLH, Lonergan P, Ireland JJ, Evans ACO. Inherent capacity of the pituitary gland to produce gonadotropins is not influenced by the number of ovarian follicles ≥3mm in diameter in cattle. Reproduction, Fertility and Development, 2010, 22, 550–557

Ireland JJ, Zielak-Steciwko AE, Jimenez-Krassel F, Folger J, Bettegowda A, Scheetz D, Walsh S, Mossa F, Knight PG, Smith GW, Lonergan P, Evans ACO. Variation in the ovarian reserve is linked to alterations in intrafollicular estradiol production and ovarian biomarkers of follicular differentiation and oocyte quality in cattle. Biology of reproduction, 2009, 80, 954-964

Walsh S, Buckley F, Pierce K, Byrne N, Patton J, Dillon P. Effects of breed and feeding system on milk production, bodyweight, body condition score, reproductive performance and postpartum ovarian function. Journal of Dairy Science, 2008, 91, 4401-4413.

Walsh S, Buckley F, Berry DP, Rath M, Pierce K, Byrne N, Dillon P. Effect of breed and feed system on udder health and milking characteristics. Journal of Dairy Science, 2007, 90, 5767-5779

 

PAPERS IN PREPARATION:

Beltman M, Walsh SW, Canty M, Duffy P, Crowe M. Characterisation of ovaries having abnormal follicular structures in mares. Equine Veterinary Journal. Submitted.

Walsh SW, Mossa F, Butler ST, Berry DP, Carter F, Lonergan P, Ireland JJ, Evans ACO. Antral follicle count in cattle: Impact of environmental effects during pregnancy and heritability. Journal of Dairy Science. To be submitted


Walsh SW,  McGettigan PA, Browne JA, Evans ACO. Uterine infection early postpartum does not have persistent effects on follicle function. Animal Reproduction Science. To be submitted.

 

McGettigan PA, Creevey CJ, Walsh SW, Pluta K, Browne JA, Mamo S, Forde N, Waters S, Matthews D, Keady S, O’Loughlin A, Earley B, McCabe M, Diskin M, Kenny D, Morris D, Murphy A, Lohan A, Loftus BJ, Roche J, Fair T, Crowe MA, Carrington SD, Lonergan P, Evans ACO. A gene expression atlas of ten bovine tissues generated using RNAseq identifies clusters of duplicated genes highly expressed in individual tissues. Nucleic Acids Research. Submitted.

 


Tharmalingam T, Walsh SW, McGettigan PA, Potter O, Struwe WB, Evans ACO, Rudd PM, Carrington SD. Comparison of follicular fluid between cows and heifers during follicular development. Biology of Reproduction. Submitted.

 

PRESENTATIONS AT CONFERENCES:

 

International conferences:

Beltman ME, Walsh SW, Canty MJ, Duffy P, Crowe MA. Characterisation of abnormal ovaries with follicular structures in mares. Proceedings of the 17th Annual Conference of the European Society for Domestic Animal Reproduction (ESDAR), Bologna, Italy (September 2013). Oral presentation.

McGettigan PA, Walsh SW, Evans ACO. Temporal changes in the extracellular matrix of theca and granulosa cells during follicle development in cattle. 46th Annual meeting of the Society for the Study of Reproduction (July 2013). Poster presentation.

Walsh SW, Mossa F, Butler ST, Berry DP, Ireland JJ, Evans ACO. Evidence that total number of ovarian follicles ≥ 3 mm in diameter is moderately heritable in dairy cows. The 18th International Congress on Animal Reproduction (August 2012). Poster presentation.

Walsh SW, Mehta JP, Browne JA, Forde N, McGettigan P, Mihm MM, Loftus B, Crowe MA, Evans ACO. Comparisons of gene expression in preovulatory follicles after the LH surge in dairy heifers versus lactating cows. 4th International Symposium on Animal Functional Genomics (October 2011). Poster presentation.

Walsh SW. Follicular dynamics in beef and dairy cows. The European Society for Domestic Animal Reproduction Anatalya, Turkey (September 2011). Oral presentation.

Walsh SW, Mehta JP, Browne JA, Forde N, McGettigan P, Mihm MM, Loftus B, Crowe MA, Evans ACO. Differences in gene expression in preovulatory follicles after the LH surge in dairy heifers versus lactating cows. 44th Annual meeting of the Society for the Study of Reproduction (July 2011). Poster presentation.

Walsh SW, Williams EJ, McGettigan P, Mehta JP, Browne JA, Evans ACO. The effect of post-partum uterine infection on subsequent preovulatory follicle gene expression during the breeding season in post-partum cows. 8th International Ruminant Reproduction Symposium, Anchorage, Alaska. (Sept. 2010). Poster presentation.

Walsh SW, Browne J, Crowe MA, Mihm M, Evans ACO. Comparison of follicular fluid steroid concentrations and mRNA levels in preovulatory follicles between heifers and lactating cows. 42nd annual meeting of the Society for the Study of Reproduction (July 2009). Poster presentation.

Walsh S, Buckley F, Pierce K, Byrne N, Patton J, Dillon P. Effect of breed and feed system on milk production, body condition score and reproductive performance. 16th International Congress on Animal Reproduction, Budapest, Hungary (July 2008). Poster presentation.

 

National conferences:

Walsh SW, Browne J, Crowe MA, Mihm M, Evans ACO. Comparison of follicular fluid steroid concentrations and mRNA levels in preovulatory follicles between heifers and lactating cows. 3rd School of Agriculture, Food Science and Veterinary Medicine research day (December 2009). Poster presentation.

Walsh S, Buckley F, Pierce K, Byrne N, Dillon P. The effect of dairy cow breed on milk production, reproductive performance and survival characteristics. Agricultural Research Forum, Tullamore, page 79 (March 2008) Oral presentation.

Walsh S, Buckley F, Pierce K, Byrne N, Dillon P. The effect of dairy cow breed and feed system on body weight and body condition score. Agricultural Research Forum, Tullamore, page 122 (March 2008) Poster presentation.

Walsh S, Buckley F, Rath M, Pierce K, Byrne N, Dillon P. (2007) The effect of dairy cow breed and feeding system on milking characteristics. Agricultural Research Forum, Tullamore, page 75 (March 2007) Oral presentation.

Walsh S, Buckley F, Rath M, Pierce K, Byrne N, Dillon P. The effect of dairy cow breed, feeding system, parity and stage of lactation on somatic cell score. Agricultural Research Forum, Tullamore, page 43 (March 2006) Oral presentation.

CO-AUTHOR OF CONFERENCE PRESENTATIONS:
Evans ACO, Mossa F, Walsh SW, Scheetz D, Jimenez-Krassel F, Ireland JLH, Smith GW, Ireland JJ. Effects of maternal environment during gestation on ovarian folliculogenesis and consequences for fertility in bovine offspring. 17th International Congress on Animal Reproduction (July 2012). Oral presentation

Evans ACO, Walsh SW, Duffy G, Browne JA, McGettigan PA, Forde N. Physiology and genomics of reproductive tissues in cattle. 4th International Symposium on Animal Functional Genomics (October 2011). Oral presentation

McGettigan PA, Mehta JP, Walsh SW, Pluta K, Browne JA, Mamo S, Forde N, Roche J, Fair T, Crowe M, Carrington S, Lonergan P, Loftus B, Evans ACO. An atlas of gene expression in the bovine reproductive tissues generated using RNA-seq. 4th International Symposium on Animal Functional Genomics (October 2011). Oral presentation

Evans ACO, Walsh SW. The physiology of multifactorial problems limiting the establishment of pregnancy in dairy cattle. 38th Annual Conference of the International Embryo Transfer Society (January 2012). Oral presentation.

Mossa F, Walsh SW, Hildebrandt TT, Kenny DA, Lonergan P, Ireland JJ, Evans ACO. Evidence that undernutrition during the first trimester of pregnancy influences development and function of the cardiovascular system in female offspring in cattle. 44th annual meeting for the Society for the Study of Reproduction (July 2011). Poster presentation.

Mossa F, Walsh SW, Kenny DA, Lonergan P, Smith GW, Ireland JJ, Evans ACO. Impairment of the size of the ovarian reserve by maternal undernutrition during pregnancy - role of testosterone. COST Action FA0702, Periconceptional Developmental Programming Workshop. Israel. (May 2011) Oral presentation

Evans ACO, Williams EJ, Walsh SW. The physiology of multifactorial problems limiting the establishment of pregnancy in dairy cows. "Bovine Reproductive Physiology: Applied Knowledge to Optimize Fertility and Genetic Improvement" SBTE (Sociedada Brasileira de Tecnologia de Embriões) pre-conference workshop. Porto de Galinhas, Brazil, 19 August 2010. Acta Scientiae Veterinariae 30 (Supl 2), s277 (2010) Oral presentation

Swangchan-Uthai T, Walsh SW, Alexander SLH, Cheng Z, Crowe MA, Evans ACO, Wathes DC. Influence of cycle stage and lactation on expression of insulin-like growth factor binding proteins (IGFBPs) in the bovine oviduct. Society for Reproduction and Fertility Oxford (July 2009). Poster presentation.

Evans R, Olori VE, Walsh S, Berry DP. (2005). A mathematical description of lactation curve characteristics using Irish milk recorded data. Agricultural Research Forum, Tullamore, page 41 (March 2005). Oral presentation

Teaching

1st year:

Introduction to Food Science - laboratories
Introduction to Chemistry – laboratories
Cell Biology and Biochemistry - tutorials

2nd year:

Food Process Technology - lectures and laboratories
Biopharmaceutical Science - laboratories
Environmental Science - laboratories

3rd Year:

Project Research and Design - lectures and laboratories
Agricultural Science Industrial Placement
Supervisor Research Projects

4th Year:

Food Traceability and Genomics - lectures and laboratories
Animal Health and Physiology – lectures
Supervisor Research Projects