• ALUMNI Association of University of Peradeniya, University of Peradeniya, Sri Lanka (Member ID # F/L/1453)
• ALUMNI Association of Faculty of Agriculture, University of Peradeniya, Sri Lanka (Member ID # LM 610)
• Sri Lanka Association for the Advancement of Science (SLAAS), Sri Lanka
• American Dairy Science Association, USA (Member ID # 134999)
• Gamma Sigma Delta – The Honor Society of Agriculture (Iowa Beta Chapter – Iowa State University), USA             

• Exploring the impact of drinking water on feed intake, growth, health, and gut microbiota composition in dairy heifer calves
• Exploring the impact of amino acid supplementations on feed intake, growth, health, and gut microbiota composition in dairy heifer calves

• Gamma Sigma Delta – The Honor Society of Agriculture, Iowa Beta Chapter – Iowa State University, USA (2019)                           
• and Mrs. M. E. Ensminger Scholarship Iowa State University, USA (2017/2018)
• S. B. Rajaguru Memorial Gold Medal for Animal Science, University of Peradeniya, Sri Lanka (2012)           
• R. R. Appadurai Memorial Award for Best Performance in Animal Science, University of Peradeniya, Sri Lanka (2012)

Refereed Journals

• Wickramasinghe, H. K. J. P., A. J. Kramer and J. A. D. R. N. Appuhamy. 2019. Drinking water intake of newborn dairy calves and its effects on feed intake, growth performance, health status, and nutrient digestibility. J. Dairy Sci. 102: 377-387. (https://doi.org/10.3168/jds.2018-15579).

Referred Short Communications

• Wickramasinghe, Janaka and Appuhamy, Ranga. 2018. Effects of Age of Dairy Calves First Offered Free Drinking Water on Feed Intake, Growth, and Health. Animal Industry Report: AS 664, ASL R3233. (https://doi.org/10.31274/ans_air-180814-372).

Referred Conference Proceedings

• Wickramasinghe, H. K. J. P., Can Ayhan Kaya, J. A. D. R. N. Appuhamy. 2019. L-glutamine improves weight gain and starter intake in Holstein heifer calves weaned early from a high volume of milk. J. Dairy Sci. (E-Suppl. 1):167. (Abstr.). Held from 23^rd to 26^th, June 2019 (Cincinnati, Ohio, USA).
• Wickramasinghe, H. K. J. P., Justin M. Anast, S. Schmitz-Esser, J. A. D. R. N. Appuhamy. 2019. Offering drinking water from birth increased species richness in the gut of neonate dairy heifer calves. J. Dairy Sci. (E-Suppl. 1):62. (Abstr.). Held from 23^rd to 26^th, June 2019 (Cincinnati, Ohio, USA).
• Silva, J. V. V., S. Ganesan, C. A. Kaya, K. J. P. Wickramasinghe, and J. A. D. R. N. Appuhamy. 2019. Effects of extracellular branched-chain amino acid availability on the abundance of glucose transporter 1 (GLUT1) in bovine mammary epithelial cells. J. Dairy Sci. (E-Suppl. 1):339. (Abstr.). Held from 23^rd to 26^th, June 2019 (Cincinnati, Ohio, USA).
• Ganesan, S., J. V. V. Silva, C. A. Kaya, K. J. P. Wickramasinghe, and J. A. D. R. N. Appuhamy. Effects of extracellular branched-chain amino acid availability on the abundance of proteins regulating fat synthesis in bovine mammary cells: A proteomics analysis. J. Dairy Sci. (E-Suppl. 1):342. (Abstr.). Held from 23^rd to 26^th, June 2019 (Cincinnati, Ohio, USA).
• Wickramasinghe, H. K. J. P., A. J. Kramer, J. A. D. R. N. Appuhamy. 2018. Offering drinking water at birth could improve growth performance and fiber digestibility in Holstein heifer calves. J. Dairy Sci. (E-Suppl. 2):391. (Abstr.). Held from 24^th to 27^th, June 2018 (Knoxville, Tennessee, USA).
• Appuhamy, J. A. D. R. N., E. A. Horst, S. K. Kvidera, H. K. J. P. Wickramasinghe, A. J. Kramer, and L. H. Baumgard. 2018. Immunoactivation is related to low plasma arginine and branched-chain amino acid concentrations in lactating dairy cows. J. Dairy Sci. (E-Suppl. 2):112. (Abstr.). Held from 24^th to 27^th, June 2018 (Knoxville, Tennessee, USA).
• Wickramasinghe, H. K. J. P., Janak K. Vidanarachchi, S. M. Chandima Himali, and Palika S, Fernando. 2013. Effect of Different Packaging Materials on Quality Characteristics of Chicken Eggs during Storage at Room Temperature in Sri Lanka. Paper presented at the Proceedings of the 13^th ASEAN Food Conference. Held from 9^th to 11^th, September 2013 (Max Atria, Singapore Expo, Singapore).

Posts Held

• Member, Logistic Committee/Wayamba International Conference (WinC), Wayamba University of Sri Lanka, Sri Lanka (2014 and 2016)
• Member, Publicity, Fund Raising and Finance Committee/Wayamba International Conference (WinC), Wayamba University of Sri Lanka (2016)
• Member, Cultural and Entertainment Committee/Sri Lanka University Games (SLUG) Wayamba University of Sri Lanka, Sri Lanka (2016)
• Member, Committee of Curriculum Development for Bachelor of Science in Biosystems Technology (BST) degree program, Wayamba University of Sri Lanka, Sri Lanka (2015/2016)
• Career Guidance Coordinator, Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Sri Lanka (2016)