2024

• de Graaf, S., Golledge, M., Rickard, J., Refshuage, G. (2024). An analysis of fertility and fecundity in the Australian sheep flock between 2006 and 2019. Scientific Reports, 14(17781), 1-11. [More Information]
• Spanner, E., de Graaf, S., Rickard, J. (2024). Factors affecting the success of laparoscopic artificial insemination in sheep. Animal Reproduction Science, 264.
• Crean, A., Pulpitel, T., Pini, T., Rickard, J., de Graaf, S., Senior, A., Simpson, S., Wali, J. (2024). Low-Fat, High-Carbohydrate Diets Reduce Body Weight and Sperm Count but Increase Sperm Motility in Mice. The Journal of Nutrition, 154(1), 60-68. [More Information]
• de Graaf, S. (2024). Reproduction 5: Controlled breeding. In 1st (Eds.), Sheep veterinary practice, (pp. 201-216). Boca Raton: CRC Press. [More Information]
• J Robertson, M., Chambers, C., Spanner, E., de Graaf, S., Rickard, J. (2024). The Assessment of Sperm DNA Integrity: Implications for Assisted Reproductive Technology Fertility Outcomes across Livestock Species. Biology, 13(7). [More Information]
• Spanner, E., de Graaf, S., Rickard, J. (2024). Uterine tone influences fertility of Merino ewes following laparoscopic artificial insemination. Theriogenology, 222, 45-53.

2023

• Spanner, E., Rickard, J., de Graaf, S., Wilson, H., McMahon, J. (2023). Fertility of ram semen frozen in pellets or straws. Animal - Science Proceedings, 14(3), 431-548. [More Information]
• Warr, S., Pini, T., de Graaf, S., Rickard, J. (2023). Molecular insights to the sperm–cervix interaction and the consequences for cryopreserved sperm. Biology Of Reproduction, 108(2), 183-196. [More Information]

2022

• Rizkallah, N., Chambers, C., de Graaf, S., Rickard, J. (2022). Factors Affecting the Survival of Ram Spermatozoa during Liquid Storage and Options for Improvement. Animals, 12(3), 244. [More Information]
• Rickard, J., Pool, K., de Graaf, S., Portas, T., Rourke, N., Wiesner, M., Hildebrandt, T., Goritz, F., Hermes, R. (2022). Increasing the Yield and Cryosurvival of Spermatozoa from Rhinoceros Ejaculates Using the Enzyme Papain. Biology, 11(2), 154. [More Information]
• Van de Hoek, M., Rickard, J., de Graaf, S. (2022). Motility Assessment of Ram Spermatozoa. Biology, 11(1715). [More Information]
• Tumeth, E., Rickard, J., Mercorelli, L., Gonzalez, L., de Graaf, S. (2022). The use of accelerometers for the remote detection of mounting in rams and testosterone-treated wethers. Computers and Electronics in Agriculture, 199, 107129. [More Information]

2021

• Refshauge, G., de Graaf, S. (2021). Climatic constraints facing sheep reproduction. In Susanne Hermesch, Soja Dominik (Eds.), Breeding Focus 2021 - Improving Reproduction, (pp. 163-186). Armidale: Animal Genetics and Breeding Unit.
• Bernecic, N., de Graaf, S., Leahy, T., Gadella, B. (2021). HDL mediates reverse cholesterol transport from ram spermatozoa and induces hyperactivated motility. Biology Of Reproduction, 104(6), 1271-1281. [More Information]
• Pool, K., Rickard, J., de Graaf, S. (2021). Melatonin improves the motility and DNA integrity of frozen-thawed ram spermatozoa likely via suppression of mitochondrial superoxide production. Domestic Animal Endocrinology, 74, 1-8. [More Information]

2020

• Pinet-Charvet, C., Fleurot, R., Derouin-Tochon, F., de Graaf, S., Druart, X., Tsikis, G., Taragnat, C., Teixeira-Gomes, A., Labas, V., Moreau, T., et al (2020). Beta-nerve growth factor stimulates spontaneous electrical activity of in vitro embryonic mouse GnRH neurons through a P75 mediated-mechanism. Scientific Reports, 10(1), 10654. [More Information]
• Pool, K., Rickard, J., Pini, T., de Graaf, S. (2020). Exogenous melatonin advances the ram breeding season and increases testicular function. Scientific Reports, 10(1), 9711. [More Information]
• Green, C., Rickard, J., de Graaf, S., Crean, A. (2020). From One Ejaculate to Another: Transference of Sperm Traits via Seminal Plasma Supplementation in the Ram. Biology, 9(2), 1-9. [More Information]
• Pool, K., Rickard, J., de Graaf, S. (2020). Global Methylation and Protamine Deficiency in Ram Spermatozoa Correlate with Sperm Production and Quality but Are Not Influenced by Melatonin or Season. Animals, 10, 2302. [More Information]
• Pool, K., Rickard, J., de Graaf, S. (2020). Overcoming neuroendocrine and metabolic barriers to puberty: the role of melatonin in advancing puberty in ewe lambs. Domestic Animal Endocrinology, 72, 1-10. [More Information]
• Leahy, T., Rickard, J., Pini, T., Gadella, B., de Graaf, S. (2020). Quantitative Proteomic Analysis of Seminal Plasma, Sperm Membrane Proteins, and Seminal Extracellular Vesicles Suggests Vesicular Mechanisms Aid in the Removal and Addition of Proteins to the Ram Sperm Membrane. Proteomics, 20(12), 1900289. [More Information]
• Rickard, J., de Graaf, S. (2020). Sperm surface changes and their consequences for sperm transit through the female reproductive tract. Theriogenology, 150, 96-105. [More Information]
• Bernecic, N., Gadella, B., de Graaf, S., Leahy, T. (2020). Synergism between albumin, bicarbonate and cAMP upregulation for cholesterol efflux from ram sperm. Reproduction, 160(2), 269-280. [More Information]
• Pool, K., Rickard, J., Tumeth, E., de Graaf, S. (2020). Treatment of rams with melatonin implants in the non-breeding season improves post-thaw sperm progressive motility and DNA integrity. Animal Reproduction Science, 221, 106579. [More Information]

2019

• Al-Bulushi, S., Manjunatha, B., Bathgate, R., Rickard, J., de Graaf, S. (2019). Artificial insemination with fresh, liquid stored and frozen thawed semen in dromedary camels. PloS One, 14(11), 1-14. [More Information]
• Bernecic, N., Zhang, M., Gadella, B., Brouwers, J., Jansen, J., Arkesteijn, G., de Graaf, S., Leahy, T. (2019). BODIPY-cholesterol can be reliably used to monitor cholesterol efflux from capacitating mammalian spermatozoa. Scientific Reports, 9(1), 1-12. [More Information]
• Stuart, C., Vaughan, J., Kershaw, C., de Graaf, S., Bathgate, R. (2019). Effect of diluent type, cryoprotectant concentration, storage method and freeze/thaw rates on the post-thaw quality and fertility of cryopreserved alpaca spermatozoa. Scientific Reports, 9(1), 1-8. [More Information]
• Al-Bulushi, S., Manjunatha, B., Bathgate, R., Rickard, J., de Graaf, S. (2019). Liquid storage of dromedary camel semen in different extenders. Animal Reproduction Science, 207, 95-106. [More Information]
• Bernecic, N., Gadella, B., Leahy, T., de Graaf, S. (2019). Novel methods to detect capacitation-related changes in spermatozoa. Theriogenology, 137, 56-66. [More Information]
• Leahy, T., Rickard, J., Bernecic, N., Druart, X., de Graaf, S. (2019). Ram seminal plasma and its functional proteomic assessment. Reproduction, 157(6), R243-R256. [More Information]
• Al-Bulushi, S., Manjunatha, B., de Graaf, S., Rickard, J. (2019). Reproductive seasonality of male dromedary camels. Animal Reproduction Science, 202, 10-20. [More Information]
• Katigbak, R., Turchini, G., de Graaf, S., Kong, L., Dumee, L. (2019). Review on Sperm Sorting Technologies and Sperm Properties toward New Separation Methods via the Interface of Biochemistry and Material Science. Advanced Biosystems, 3(9), 1-16. [More Information]
• Druart, X., Rickard, J., Tsikis, G., de Graaf, S. (2019). Seminal plasma proteins as markers of sperm fertility. Theriogenology, 137, 30-35. [More Information]
• Fair, S., Meade, K., Reynaud, K., Druart, X., de Graaf, S. (2019). The biological mechanisms regulating sperm selection by the ovine cervix. Reproduction, 158(1), R1-R13. [More Information]
• Rickard, J., Pool, K., Druart, X., de Graaf, S. (2019). The fate of spermatozoa in the female reproductive tract: A comparative review. Theriogenology, 137, 104-112. [More Information]
• Friesen, C., de Graaf, S., Olsson, M. (2019). The relationship of body condition, superoxide dismutase, and superoxide with sperm performance. Behavioral Ecology, 30(5), 1351-1363. [More Information]

2018

• Bernecic, N., Gadella, B., Brouwers, J., Jansen, J., de Graaf, S., Leahy, T. (2018). Albumin, bicarbonate and cAMP upregulation are prerequisites for cholesterol efflux in ram spermatozoa. Animal Reproduction Science, 194, e6-e6. [More Information]
• Pini, T., de Graaf, S., Druart, X., Tsikis, G., Labas, V., Teixeira-Gomes, A., Gadella, B., Leahy, T. (2018). Binder of Sperm Proteins 1 and 5 have contrasting effects on the capacitation of ram spermatozoa. Biology Of Reproduction, 98(6), 765-775. [More Information]
• Pini, T., Farmer, K., Druart, X., Teixeira-Gomes, A., Tsikis, G., Labas, V., Leahy, T., de Graaf, S. (2018). Binder of Sperm Proteins protect ram spermatozoa from freeze-thaw damage. Cryobiology, 82, 78-87. [More Information]
• de Graaf, S., Leahy, T. (2018). Controlled Breeding. In Kym Abbott (Eds.), The Practice of Sheep Veterinary Medicine, (pp. 238-264). Adelaide: University of Adelaide Press. [More Information]
• Pini, T., Rickard, J., Leahy, T., Crossett, B., Druart, X., de Graaf, S. (2018). Cryopreservation and egg yolk medium alter the proteome of ram spermatozoa. Journal of Proteomics, 181, 73-82. [More Information]
• Al-Bulushi, S., Manjunatha, B., Bathgate, R., Rickard, J., de Graaf, S. (2018). Effect of semen collection frequency on the semen characteristics of dromedary camels. Animal Reproduction Science, 197, 145-153. [More Information]
• Pini, T., Leahy, T., de Graaf, S. (2018). Seminal plasma and cryopreservation alter ram sperm surface carbohydrates and interactions with neutrophils. Reproduction, Fertility and Development, 30(5), 689-702. [More Information]
• Druart, X., de Graaf, S. (2018). Seminal plasma proteomes and sperm fertility. Animal Reproduction Science, 194, 33-40. [More Information]
• Pini, T., Leahy, T., de Graaf, S. (2018). Sublethal sperm freezing damage: Manifestations and solutions. Theriogenology, 118, 172-181. [More Information]
• Pool, K., Rickard, J., Leahy, T., Pini, T., de Graaf, S. (2018). Treatment of rams with melatonin in the non-breeding season improves the post-thaw quality of spermatozoa. Animal Reproduction Science, 194, e17-e17. [More Information]

2017

• Maddison, J., Rickard, J., Bernecic, N., Tsikis, G., Soleilhavoup, C., Labas, V., Combes-Soia, L., Harichaux, G., Druart, X., Leahy, T., de Graaf, S. (2017). Oestrus synchronisation and superovulation alter the cervicovaginal mucus proteome of the ewe. Journal of Proteomics, 155, 1-10. [More Information]
• Rickard, J., Ryan, G., Hall, E., de Graaf, S., Hermes, R. (2017). Using transrectal ultrasound to examine the effect of exogenous progesterone on early embryonic loss in sheep. PloS One, 12(8), 1-18. [More Information]

2016

• Pini, T., Leahy, T., de Graaf, S. (2016). Changes to sperm surface carbohydrates following exposure to seminal plasma and freezing. Animal Reproduction Science, 169, 100-100. [More Information]
• Leahy, T., Rickard, J., Aitken, J., de Graaf, S. (2016). D-penicillamine prevents ram sperm agglutination by reducing the disulphide bonds of a copper-binding sperm protein. Reproduction, 151(5), 491-500. [More Information]
• Al-Bulushi, S., Manjunatha, B., Bathgate, R., de Graaf, S. (2016). Effect of different extenders on sperm motion characteristics, viability and acrosome integrity during liquid storage of dromedary camel semen. Animal Reproduction Science, 169, 127-127. [More Information]
• Rickard, J., Leahy, T., Druart, X., de Graaf, S. (2016). Exposure to seminal plasma reduces the duration that epididymal ram spermatozoa exhibit wave motion. Animal Reproduction Science, 169, 118-118. [More Information]
• Bernecic, N., Gadella, B., de Graaf, S., Leahy, T. (2016). Isolation of high density lipoproteins in ovine follicular and oviductal fluid. Animal Reproduction Science, 169, 121-122. [More Information]
• Maddison, J., Rickard, J., Mooney, E., Bernecic, N., Soleilhavoup, C., Tsikis, G., Druart, X., Leahy, T., de Graaf, S. (2016). Oestrus synchronisation and superovulation alter the production and biochemical constituents of ovine cervicovaginal mucus. Animal Reproduction Science, 172, 114-122. [More Information]
• McGregor, B., de Graaf, S., Hatcher, S. (2016). On-farm factors affecting physical quality of Merino wool. 1. Nutrition, reproduction, health and management. Small Ruminant Research, 137, 138-150. [More Information]
• Leahy, T., Rickard, J., de Graaf, S. (2016). Penicillamine attenuates agglutination of ram spermatozoa in capacitating media through the reduction of disulphide bonds on a sperm binding protein. Animal Reproduction Science, 169, 95-95. [More Information]
• Leahy, T., Rickard, J., Aitken, J., de Graaf, S. (2016). Penicillamine prevents ram sperm agglutination in media that support capacitation. Reproduction, 151(2), 167-177. [More Information]
• Soleilhavoup, C., Riou, C., Tsikis, G., Labas, V., Harichaux, G., Kohnke, P., Reynaud, K., de Graaf, S., Gerard, N., Druart, X. (2016). Proteomes of the Female Genital Tract During the Oestrous Cycle. Molecular and Cellular Proteomics, 15(1), 93-108. [More Information]
• Pini, T., Leahy, T., Soleilhavoup, C., Tsikis, G., Labas, V., Combes-Soia, L., Harichaux, G., Rickard, J., Druart, X., de Graaf, S. (2016). Proteomic Investigation of Ram Spermatozoa and the Proteins Conferred by Seminal Plasma. Journal of Proteome Research, 15(10), 3700-3711. [More Information]
• Rickard, J., Pini, T., Leahy, T., de Graaf, S. (2016). Species specific sorting protocol required for the production of high quality chill- and frozen-stored sex-sorted ram sperm. 18th International Congress on Animal Reproduction, N/A: N/A.
• Leahy, T., de Graaf, S. (2016). The ART of milk production. Australasian Science, 37 (1).
• Rickard, J., Schmidt, R., Maddison, J., Bathgate, R., Lynch, G., Druart, X., de Graaf, S. (2016). Variation in seminal plasma alters the ability of ram spermatozoa to survive cryopreservation. Reproduction, Fertility and Development, 28(4), 516-523. [More Information]

2015

• Stuart, C., Vaughan, J., Kershaw-Young, C., Wilkinson, J., Bathgate, R., de Graaf, S. (2015). Effects of varying doses of b-nerve growth factor on the timing of ovulation, plasma progesterone concentration and corpus luteum size in female alpacas (Vicugna pacos). Reproduction, Fertility and Development, 27(8), 1181-1186. [More Information]
• Mata-Campuzano, M., Soleilhavoup, C., Tsikis, G., Martinez-Pastor, F., de Graaf, S., Druart, X. (2015). Motility of liquid stored ram spermatozoa is altered by dilution rate independent of seminal plasma concentration. Animal Reproduction Science, 162, 31-36. [More Information]
• Johinke, D., de Graaf, S., Bathgate, R. (2015). The Effect of Sperm Concentration and Storage Vessel on Quercetin-Supplemented Rabbit Semen During Chilled Storage. Reproduction in Domestic Animals, 50(4), 567-573. [More Information]
• Rickard, J., Leahy, T., Soleilhavoup, C., Tsikis, G., Labas, V., Harichaux, G., Lynch, G., Druart, X., de Graaf, S. (2015). The identification of proteomic markers of sperm freezing resilience in ram seminal plasma. Journal of Proteomics, 126, 303-311. [More Information]

2014

• de Graaf, S., Leahy, T., Vishwanath, R. (2014). Biological and practical lessons associated with the use of sexed semen. Ninth International Symposium on Reproduction in Domestic Ruminants, Leicestershire: Context Publishing.
• Maddison, J., Rickard, J., Bathgate, R., Druart, X., de Graaf, S. (2014). Changes to ovine cervical mucus induced by the oestrous cycle, oestrus synchronisation and superovulation. European Society for Reproduction in Domestic Animals, Italy: Reproduction in Domestic Animals.
• de Graaf, S., Rickard, J., Pini, T., Maddison, J., Druart, X., Leahy, T. (2014). Emerging Roles of Seminal Plasma in Sperm Function. 9th Biennial Conference of the Association for Applied Animal Andrology, Newcastle: Association for Applied Animal Andrology.
• Johinke, D., de Graaf, S., Bathgate, R. (2014). Investigation of in vitro parameters and in vivo fertility of rabbit spermatozoa after chilled storage. Animal Reproduction Science, 147(3-4), 135-143. [More Information]
• Johinke, D., de Graaf, S., Bathgate, R. (2014). Quercetin reduces the in vitro production of H2O2 during chilled storage of rabbit spermatozoa. Animal Reproduction Science, 151(3-4), 208-219. [More Information]
• Soleilhavoup, C., Tsikis, G., Labas, V., Harichaux, G., Kohnke, P., Dacheux, J., Guerin, Y., Gatti, J., de Graaf, S., Druart, X. (2014). Ram seminal plasma proteome and its impact on liquid preservation of spermatozoa. Journal of Proteomics, 109(23), 245-260. [More Information]
• Rickard, J., Pini, T., Soleilhavoup, C., Cognie, J., Bathgate, R., Lynch, G., Evans, G., Maxwell, W., Druart, X., de Graaf, S. (2014). Seminal plasma aids the survival and cervical transit of epididymal ram spermatozoa. Reproduction, 148, 469-478. [More Information]

2013

• Bathgate, R., Mace, N., Heasman, K., Evans, G., Maxwell, W., de Graaf, S. (2013). Birth of Kids after Artificial Insemination with Sex-Sorted, Frozen-Thawed Goat Spermatozoa. Reproduction in Domestic Animals, 48(6), 893-898. [More Information]
• Garratt, M., Bathgate, R., de Graaf, S., Brooks, R. (2013). Copper-zinc superoxide dismutase deficiency impairs sperm motility and in vivo fertility. Reproduction, 146(4), 297-304. [More Information]
• Johinke, D., de Graaf, S., Bathgate, R. (2013). European Society for Reproduction in Domestic Animals. European Society for Reproduction in Domestic Animals, Italy: Reproduction in Domestic Animals.
• Rickard, J., Maddison, J., Pini, T., Bathgate, R., Evans, G., Maxwell, W., Lynch, G., Druart, X., de Graaf, S. (2013). Exposure to seminal plasma aids the migration of epididymal ram spermatozoa through the cervix. The Annual Conference of the Australian Society for Reproductive Biology, Australia: Australian Society for Reproductive Biology.
• de Graaf, S., Rickard, J., Maddison, J., Bathgate, R., Druart, X. (2013). Impaired transport of liquid and frozen stored spermatozoa through the cervix. Reproduction in Domestic Animals, 48(1), 63-63. [More Information]
• de Graaf, S., Rickard, J., Maddison, J., Bathgate, R., Druart, X. (2013). Impaired transport of liquid and frozen stored spermatozoa through the cervix. European Society for Reproduction in Domestic Animals, Italy: Reproduction in Domestic Animals.
• Johinke, D., de Graaf, S., Bathgate, R. (2013). In vitro quality of rabbit spermatozoa during chilled storage at 5 or 15 degrees C over 96 h. European Society for Reproduction in Domestic Animals, Italy: Reproduction in Domestic Animals.
• Druart, X., Rickard, J., Mactier, S., Kohnke, P., Kershaw-Young, C., Bathgate, R., Gibb, Z., Crossett, B., Tsikis, G., Labas, V., Grupen, C., de Graaf, S., et al (2013). Proteomic characterization and cross species comparison of mammalian seminal plasma. Journal of Proteomics, 91, 13-22. [More Information]
• Rath, D., Barcikowski, S., de Graaf, S., Garrels, W., Grossfeld, R., Klein, S., Knabe, W., Knorr, C., Kues, W., Meyer, W., et al (2013). Sex selection of sperm in farm animals: status report and developmental prospects. Reproduction, 145, R15-R30. [More Information]
• Stuart, C., Craig, J., Kershaw-Young, C., de Graaf, S., Bathgate, R. (2013). The effect of egg yolk and glycerol concentrations on the post-thaw survival of papain-reduced alpaca (Vicugna pacos) spermatozoa. Australian Society of Animal Production, Perth: N/A.
• Stuart, C., Kershaw-Young, C., de Graaf, S., Bathgate, R. (2013). The effect of four semen diluents on the post-thaw survival of papain-reduced alpaca (Vicugna pacos) spermatozoa. European Society for Reproduction in Domestic Animals, Italy: Reproduction in Domestic Animals.
• Rickard, J., Bathgate, R., Maddison, J., Schmidt, R., Lynch, G., Druart, X., de Graaf, S. (2013). The effect of seminal plasma from rams with varied freezing resilience on the cryosurvival of ram spermatozoa. European Society for Reproduction in Domestic Animals, Italy: Reproduction in Domestic Animals.

2012

• Rickard, J., Kohnke, P., Bathgate, R., Druart, X., Lynch, G., de Graaf, S. (2012). A preliminary assessment of the ram spermatozoa glycoproteome using 2DLC-MS/MS. International Congress on Animal Reproduction, Canada: Reproduction in Domestic Animals.
• de Graaf, S., Grupen, C., Rickard, J., Bathgate, R., Mactier, S., Kohnke, B., Crossett, B., Maxwell, W., Christopherson, R., Druart, X. (2012). Identification of Membrane Glycoproteins of Ejaculated and Epididymal Boar Spermatozoa Using LC-MS/MS. The 2nd World Congress of Reproductive Biology, N/A: N/A.
• Gibb, Z., Grupen, C., de Graaf, S. (2012). Is Sex-Sorting a Reality for the Horse Industry? The Australian College of Veterinary Scientists Science Week, N/A: N/A.
• Leahy, T., de Graaf, S. (2012). Seminal Plasma and its Effect on Ruminant Spermatozoa During Processing. Reproduction in Domestic Animals, 47(Suppl. 4), 207-213. [More Information]
• White, P., Bathgate, R., de Graaf, S. (2012). Sustainable student-led tutorials in Veterinary Physiology. Australian Veterinary Association conference, Australia: Australian Veterinary Association.
• Johinke, D., de Graaf, S., Bathgate, R. (2012). The effects of various diluents on sperm motility of rabbit semen stored at 5â�°C for up to 96 hours. International Congress on Animal Reproduction, Canada: Reproduction in Domestic Animals.
• Portas, T., Evans, G., de Graaf, S. (2012). The seminiferous cycle of the rhinoceros. Animal Reproduction Science, 136(1-2), 128-132. [More Information]
• Johinke, D., de Graaf, S., Bathgate, R. (2012). Viability of rabbit spermatozoa stored in different extenders at 5 degrees C or 15 degrees C for up to 96 hours. The Annual Conference of the Australian Society for Reproductive Biology, Australia: Australian Society for Reproductive Biology.

2011

• Beilby, K., Wilkening, S., de Graaf, S., Wrenzycki, C., Grupen, C. (2011). Quantification of Developmentally Important Gene Transcripts Expressed in Embryos Produced In Vivo and In Vitro Using Sex-Sorted and Non-Sorted Ram Spermatozoa. Annual Conference of the International Embryo Transfer Society, melbourne: CSIRO Publishing.
• Beilby, K., de Graaf, S., Evans, G., Maxwell, W., Wilkening, S., Wrenzycki, C., Grupen, C. (2011). Quantitative mRNA expression in ovine blastocysts produced from X- and Y-chromosome bearing sperm, both in vitro and in vivo. Theriogenology, 76(3), 471-481. [More Information]

2010

• Evans, G., de Graaf, S. (2010). Application of sexed sperm in animal breeding and conservation programs. International Strategic Programs for the Conservation of Animal Genetic Resources for Food and Agriculture, Canada: University of Saskatchewan.
• de Graaf, S., Druart, X. (2010). Interaction of spermatozoa with the Female Reproductive Tract. Society for Reproductive Biology/Australian Endocrine Society, Australia: Australian Society for Reproductive Biology.
• Beilby, K., Kaurivi, Y., Maxwell, W., Evans, G., de Graaf, S., Grupen, C. (2010). Production of Embryos in Superovulated Ewes Using Frozen-Thawed, Sex-Sorted and Refrozen-Thawed Sperm. 41st Annual Conference of the Society for Reproductive Biology, Australia: CSIRO Publishing.
• de Graaf, S. (2010). Reproduction. In D.J. Cottle (Eds.), International Sheep and Wool Handbook, (pp. 189-222). Nottingham: Nottingham University Press.
• Beilby, K., de Graaf, S., Grupen, C. (2010). The Effect of Sperm and Cryoprotectant concentration on the Freezing Success of Sex Sorted ram Sperm for In-Vitro Fertilization. Theriogenology, 74(5), 786-794. [More Information]

2009

• Behr, B., Rath, D., Mueller, P., Hildebrandt, T., Goeritz, F., Braun, B., Leahy, T., de Graaf, S., Maxwell, W., Hermes, R. (2009). Feasibility of sex-sorting sperm from the white and the black rhinoceros (Ceratotherium simum, Diceros bicornis). Theriogenology, 72(3), 353-364. [More Information]
• Behr, B., Rath, D., Hildebrandt, T., Goeritz, F., Blottner, S., Portas, T., Bryant, B., Sieg, B., Knieriem, A., de Graaf, S., Maxwell, W., et al (2009). Germany/Australia Index of sperm sex sortability in Elephants and Rhinoceros. Reproduction in Domestic Animals, 44(2), 273-277. [More Information]
• de Graaf, S., Beilby, K., Underwood, S., Evans, G., Maxwell, W. (2009). Sperm sexing in sheep and cattle: The exception and the rule. Theriogenology, 71(1), 89-97. [More Information]

2008

• de Graaf, S., Leahy, T., Marti, J., Evans, G., Maxwell, W. (2008). Application of Seminal Plasma in Sex-Sorting and Sperm Cryopreservation. Theriogenology, 70, 1360-1363. [More Information]

2007

• de Graaf, S., Evans, G., Maxwell, W., Cran, D., O'Brien, J. (2007). Birth of offspring of pre-determined sex after artificial insemination of frozen-thawed, sex-sorted and re-frozen-thawed ram spermatozoa. Theriogenology, 67(2), 391-398. [More Information]
• de Graaf, S., Beilby, K., O'Brien, J., Osborn, D., Downing, J., Maxwell, W., Evans, G. (2007). Embryo production from superovulated sheep inseminated with sex-sorted ram spermatozoa. Theriogenology, 67(3), 550-555. [More Information]
• de Graaf, S., Peake, K., Maxwell, W., O'Brien, J., Evans, G. (2007). Influence of supplementing diet with Oleic and Linoleic acid on the freezing ability and sex-sorting parameters of ram semen. Livestock Science, 110, 166-173. [More Information]
• Maxwell, W., de Graaf, S., El-Hajj Ghaoui, R., Evans, G. (2007). Seminal plasma effects on sperm handling and female fertility. Society of Reproduction and Fertility Supplement, 64, 13-38.
• Maxwell, W., de Graaf, S., El-Hajj Ghaoui, R., Evans, G. (2007). Seminal plasma effects on sperm handling and female fertility. In: Reproduction in Domestic Ruminants VI (INVITED REVIEW). 7th International Symposium on Reproduction in Domestic Ruminants, Nottingham, UK: Nottingham University Press.
• de Graaf, S., Evans, G., Maxwell, W., Downing, J., O'Brien, J. (2007). Successful Low Dose Insemination of Flow Cytometrically Sorted Ram Spermatozoa in Sheep. Reproduction in Domestic Animals, 42, 648-653. [More Information]
• de Graaf, S., Evans, G., Gillan, L., Guerra, M., Maxwell, W., O'Brien, J. (2007). The influence of antioxidant, cholesterol and seminal plasma on the in vitro quality of sorted and non-sorted ram spermatozoa. Theriogenology, 67(2), 217-227. [More Information]

2006

• de Graaf, S., Evans, G., Maxwell, W., O'Brien, J. (2006). In vitro characteristics of fresh and frozen-thawed ram spermatozoa after sex sorting and re-freezing. Reproduction, Fertility and Development, 18(8), 867-874. [More Information]
• de Graaf, S., Evans, G., Maxwell, W., O'Brien, J. (2006). In vitro differences between sex-sorted ram sperm originating from fresh or frozen-thawed samples. 39th Annual Conference of Physiology and Pathology of Reproduction and 31st Mutual Conference on Veterinary and Human Reproductive Medicine, u/k: Blackwell Synergy.
• de Graaf, S., Evans, G., Maxwell, W., O'Brien, J. (2006). Invitro differences between sex sorted Ram sperm Originating from Fresh or Frozen/Thawed samples. European Society of Domestic Animal Reproduction, Germany: Blackwell Publishers.
• de Graaf, S., Leahy, T., Gillan, L., Evans, G., Maxwell, W., O'Brien, J. (2006). Kinematics of sex-sorted ram spermatozoa in response to seminal plasma. 7th International Symposium on Reproduction in Domestic Ruminants, Nottingham, UK: Nottingham University Press.

2005

• Morton, K., de Graaf, S., Campbell, A., Tomkins, L., Maxwell, W., Evans, G. (2005). Repeat Ovum Pick-up and in vitro Embryo Production from Adult Ewes with and without FSH treatment. Reproduction in Domestic Animals, 440, 422-428. [More Information]

2004

• Maxwell, W., Evans, G., Hollinshead, F., Bathgate, R., de Graaf, S., Eriksson, B., Gillan, L., Morton, K., O'Brien, J. (2004). Integration Of Sperm Sexing Technology Into The Art Toolbox. Animal Reproduction Science, 82-83, 79-95. [More Information]
• Maxwell, W., Evans, G., Hollinshead, F., Bathgate, R., de Graaf, S., Eriksson, B., Gillan, L., Morton, K., O'Brien, J. (2004). Intergration Of Sperm Sexing Technology Into The Art Toolbox. 15th International Congress on Animal Reproduction ICAR 2004, Netherlands: Elsevier.
• de Graaf, S., Gillan, L., Evans, G., Maxwell, W., O'Brien, J. (2004). The effect of sheath fluid on the quality of sex-sorted ram spermatozoa. Annual Conference of the International Embryo Transfer Society, melbourne: CSIRO Publishing.