*denotes equal contribution 

1. Choi, H., J. Y. Sung, M. A. Lopez-Rincon, K. Furukawa, A. Murai, and S. W. Kim. 2026. Nutritional necessity of non-essential amino acids for pigs fed a soybean meal-free diet meeting essential amino acid requirements: based on nitrogen retention and growth efficiency. (Submitted to Journal) 

2. Garavito-Duarte, Y., H. Choi, and S. W. Kim. 2026. Influence of F18+ Escherichia coli challenge on mucosal immunity in the jejunum of nursery pigs at different days post-weaning: importance of jejunal immunity for intestinal health. (revision)

3. Lee, H., H. Choi, J. Kim, D. U. Ha, J. Son, and B. G. Kim. 2026. Effects of a hybrid bacterial phytase alone or in combination with xylanase and β-glucanase on ileal and total tract digestibility of energy and nutrients in wheat-soybean meal-based diets in pigs. (revision)

4. Choi, H., and S. W. Kim. 2026. Alteration of acid-binding capacity of various nursery pig diets and its influence on properties of digesta along the gastrointestinal tract. Journal of Animal Physiology and Animal Nutrition (In press)

5. Choi, H.*, J. Y. Sung*, J. Son, and S. W. Kim. 2026. Recent updates on amino acid requirements of pigs based on phenotypic improvements: invited review. Animal Bioscience 39:250891.

6. Choi, H., Z. Deng, A. Sokale, A. Fickler, A. Amerah, and S. W. Kim. 2026. Investigation of nutritional and functional roles of β-mannanase on intestinal health and growth performance of nursery pigs fed low-cost formulated diets with high phytase inclusion. Journal of Animal Science 104:skag038.

7. Sung, J. Y, H. Choi, A. R. Gormley, and S. W. Kim. 2026. Quantification of the absolute abundance of the mucosa-associated microbiota in the jejunum of pigs using spike-in control. Microbiome Research Reports 5:5.

8. Choi, H., Z. Deng, and S. W. Kim. 2025. Impacts of different dietary soybean meal levels on jejunal immunity of nursery pigs at different days post-weaning. Journal of Animal Science and Biotechnology 16:138.

9. Choi, H., Y. Garavito-Duarte, A. R. Gormley, and S. W. Kim. 2025. Aflatoxin B1: challenges and strategies for the intestinal microbiota and intestinal health of monogastric animals. Toxins 17:43.

10. Choi, H., G. C. Rocha, and S. W. Kim. 2025. Effects of dietary supplementation of myristic acid on jejunal mucosa-associated microbiota, intestinal health, and growth performance of nursery pigs. Animal Science Journal 96:e70027.

11. Kim, S. W., H. Choi, C. Lin, and R. D. Mateo. 2025.  Effects of increasing levels of benzoic acid fed to pigs on nitrogen utilization and metabolism affecting growth performance, carcass characteristics, and ammonia emission. Journal of Animal Science 103:skaf101. 

12. Deng, Z., H. Choi, and S. W. Kim. 2025. Impacts of replacing soybean meal with processed soybean meal on intestinal health and growth of nursery pigs challenged with F18+ Escherichia coli. Animal Bioscience 38:728-738.

13. Garavito-Duarte, Y., A. Bonetti, B. Tugnoli, H. Choi, A. Piva, E. Grilli, and S. W. Kim. 2025. Investigation of the nutritional and functional roles of a microencapsulated blend of botanicals on intestinal health and growth of nursery pigs challenged with F18+ Escherichia coli. Journal of Animal Science 103:skaf047. 

14. Choi, H., and S. W. Kim. 2024. Dietary intervention of benzoic acid for intestinal health and growth of nursery pigs. Animals 4:2394.

15. Choi, H.*, H. Jo*, S. W. Kim, and B. G. Kim. 2024. Gestating sows with a restricted feed allowance require a longer adaptation period before collecting feces compared with lactating sows in total tract digestibility assessments using index method. Journal of Animal Science 102:skae228.

16. Choi, H., Y. G. Duarte, G. A. M. Pasquali, and S. W. Kim. 2024. Investigation of the nutritional and functional roles of a combinational use of xylanase and β-glucanase on intestinal health and growth of nursery pigs. Journal of Animal Science and Biotechnology 15:63.

17. Choi, H., A. Sokale, B. Federick, and S. W. Kim. 2024. Effects of increasing dose of a hybrid bacterial 6-phytase on apparent total tract nutrient digestibility, release of free myoinositol, and retention of calcium and phosphorus, and growth performance of pigs. Animal Feed Science and Technology 309:115876.

18. Choi, H., S. J. You, and B. G. Kim. 2024. Amino acid supplementation during the adaptation period did not affect the standardized ileal digestibility of amino acids in corn and soybean meal fed to pigs. Animal Bioscience 37:492-499.

19. Kim, S. W., Z. Deng, and H. Choi. 2024. Advances of nutritional technologies and science in pig production. Animal Industry and Technology 11:45-55.

20. Choi, H., and S. W. Kim. 2023. Characterization of β-glucans from cereal and microbial sources and their roles in feeds for intestinal health and growth of nursery pigs. Animals 13:2236.

21. Choi, H., Y. Chen, F. Longo, and S. W. Kim. 2023. Comparative effects of benzoic acid and sodium benzoate in diets for nursery pigs on growth performance and acidification of digesta and urine. Journal of Animal Science 101:1-12.

22. Choi, H., C. S. Won, and B. G. Kim. 2021. Protein and energy concentrations of meat meal and meat and bone meal fed to pigs based on in vitro assays. Animal Nutrition 7:252-257. 

23. Choi, H.*, S. Y. Ji*, H. Jo, M. Song, and B. G. Kim. 2021. Excessive dietary lead supplementation reduces growth performance and increases lead accumulation in pigs. Animal Bioscience 34:102-108. 

24. Choi, H., J. Y. Sung, and B. G. Kim. 2020. Neutral detergent fiber rather than other fiber types as an independent variable increases the accuracy of prediction equation for digestible energy in feeds for growing pigs. Asian-Australasian Journal of Animal Sciences 33:615-622. 

25. Ha, D. U., H. Choi, and B. G. Kim. 2020. Effects of supplemental protease on in vitro disappearance of dry matter and crude protein of feed ingredients for pigs. Revista Brasileira de Zootecnia 49:e20200095.

26. Choi, H., and B. G. Kim. 2019. A low-fiber diet requires longer adaptation period before collecting feces of pigs compared with a high-fiber diet in digestibility experiments using the inert marker method. Animal Feed Science and Technology 256:114254. 

27. Akonjuen, M. B., H. Choi, and B. G. Kim. 2019. An in vitro approach to assess nutrient utilization of brewers dried grains and effects of supplemental β-glucanase on swine feed ingredients. American Journal of Animal and Veterinary Sciences 14:239-243. 

28. Akonjuen, M. B., B. Hong, H. Choi, and B. G. Kim. 2019. Digestibility of energy and crude protein in Korean rice wine residues fed to pigs. American Journal of Animal and Veterinary Sciences 14:183-189. 

1.  Choi, H., Z. Deng, A. Sokale, A. Fickler, A. Amerah, and S. W. Kim. 2025. Investigation of nutritional and functional roles of β-mannanase with low and high doses of phytase on intestinal health and growth of nursery pigs fed low-cost formulated feeds. Journal of Animal Science 103(Supplement_1):135-136. 

2.  Choi, H., Z. Deng., and S. W. Kim. 2025. Impacts of increasing soybean meal on jejunal immune challenge of nursery pigs at different ages. Journal of Animal Science 103(Supplement_1):80-81.

3. Kim, S. W., Y. R. Garavito-Duarte, A. R. Gormley, H. Choi., and J. Y. Sung. 2025. The role of Intestinal health on overall growth performance and the influence of nutrients. Journal of Animal Science 103(Supplement_1):198-199.

4. Gravito-Duarte, Y. R., A. Bonetti, B. Tugnoli, H. Choi, A. Piva, E. Grill, and S. W. Kim. 2025. Functional roles of a microencapsulated blend of botanicals on jejunal mucosal immunity and growth of nursery pigs challenged with F18+ Escherichia coli. Journal of Animal Science 103(Supplement_1):198-199.

5. Gravito-Duarte, Y. R., H. Choi, and S. W. Kim. 2025. Influence of F18+ Escherichia Coli challenge on jejunal mucosal immunity of nursery pigs at different ages. Journal of Animal Science 103(Supplement_1):56-56.

6. Choi, H., G. C. Rocha, and S. W. Kim. 2024. Impacts of dietary myristic acids on mucosa-associated microbiota in relation to intestinal health and growth parameters of nursery pigs. Journal of Animal Science 102(Supplement_2):40-41. 

7. Choi, H., Y. G. Duarte, G. A. M. Pasquali, and S. W. Kim. 2024. Investigation of the nutritional and functional roles of a combinational use of xylanase and β-glucanase on intestinal health and growth of nursery pigs. Journal of Animal Science 102(Supplement_2):82-83. 

8. Choi, H., and G. C. Rocha, and S. W. Kim. 2023. Effects of dietary supplementation of myristic acid on intestinal health and growth performance of nursery pigs. Journal of Animal Science 101(Supplement_3):187-187. https://doi/10.1093/jas/skad281.227

9.  Choi, H., and S. W. Kim. 2023. Effects of increasing dose of a novel hybrid bacterial 6-phytase on apparent total tract nutrient digestibility, release of free myoinositol, and retention of calcium and phosphorus in pigs. Journal of Animal Science 101(Supplement_3):190-191. https://doi/10.1093/jas/skad281.231

10. Choi, H., Y. Chen, F. Longo, and S. W. Kim. 2022. Effects of benzoic acid and sodium benzoate supplementation on growth performance of nursery pigs. Journal of Animal Science. 100(Supplement_2):57-58. https://doi/10.1093/jas/skac064.091

11. Choi, H., S. J. You, and B. G. Kim. 2021. Amino acid supplementation during the adaptation period did not affect the standardized ileal digestibility of amino acids in corn and soybean meal fed to pigs. Journal of Animal Science 99:200-201. https://doi.org/10.1093/jas/skab054.327

12. Won, C. S., H. Choi, and B. G. Kim. 2019. Prediction of energy and protein utilization in rendered animal offals by pigs based on in vitro assays. Proceedings of 2019 Annual Congress of Korean Society of Animal Science and Technology, Jinju, Republic of Korea. vol II p. 33.

13. Lee, J. M., H. Choi, and B. G. Kim. 2019. Effects of Lactobacillus probiotics on nutrient digestibility and growth performance of weanling pigs. Proceedings of 2019 Annual Congress of Korean Society of Animal Science and Technology, Jinju, Republic of Korea. vol II p. 101.

14. Choi, H., and B. G. Kim. 2018. Prediction equations for estimating digestible energy in feed ingredients and diets for pigs. Proceedings of the 18th AAAP Animal Science Congress. Kuching, Malaysia. Asian-Australasian Association of Animal Production Societies. p. 406.

15. Choi, H., and B. G. Kim. 2018. A low-fiber diet requires longer adaptation period before collecting feces of pigs compared with a high-fiber diet in digestibility experiments using index method.  Proceedings of the 18th AAAP Animal Science Congress, Kuching, Malaysia. Asian-Australasian Association of Animal Production Societies. p. 281.

16. Akonjuen, M. B., H. Choi, and B. G. Kim. 2018. An in vitro approach to acess nutrient utilization of brewer's dried grain and effects of supplemental β-glucanase on swine feed ingredients. Proceedings of 2018 Annual Congress of Korean Society of Animal Science and Technology, Anseong, Republic of Korea. vol II p. 170.

17. Park, B. C., H. Choi, J. Y. Sung, and B. G. Kim. 2018. An in vitro approach to assess nutrient utilization of insect meal and an estimation of replacement values of defatted insect meal as a swine feed ingredient. Proceedings of 2018 Annual Congress of Korean Society of Animal Science and Technology, Anseong, Republic of Korea. vol II p. 167.

18. Choi, H., K. E Reddy, S. D. Lee, K. R. Park, H. J. Lee, and B. G. Kim. 2017. Influence of dietary lead supplementation reduces growth performance and increases lead accumulation in pigs. Proceedings of 2017 Annual Congress of Korean Society of Animal Science and Technology, Gwangju, Republic of Korea. vol II p. 66.

19. Choi, H., A. R. Son, and B. G. Kim. 2017. Replacement value of high-protein canola meal in corn-soybean meal-based diets fed to pigs. Proceedings of 2017 Annual Congress of Korean Society of Animal Science and Technology, Gwangju, Republic of Korea. vol II p. 197.