Juan Romero

Associate Professor of Animal Nutrition11010001

Degree: Ph. D. 2013, University of Florida
Phone: 207.581.2925
Email: juan.romero@maine.edu
Location: 203 Rogers Hall

Professional Interests: forage quality and conservation, ruminant nutrition, animal systems microbiota, and enzymology

Teaching: AVS 446 Forage Science and Range Management , AVS 455 Animal Nutrition

Research: Dr. Romero aims to expand the understanding of the factors that affect forage quality and conservation in order to develop novel additives that will improve profitability of livestock producers. Specifically, his program focuses on the methodological use of fungal enzymes to solve specific issues in silage production and the development of biologically-based additives to enhance the stability of conserved forages. In order to better understand the processes that affect silage and hay production, Dr. Romero not only relies on well-established agronomic and nutritional techniques but also on next-generation sequencing and proteomics to push the envelope by developing novel research hypotheses. Dr. Romero pioneered the use of proteomics to compare commercially-available fibrolytic enzymes in animal nutrition, suggesting for the first time specific enzymes involved in improving ruminal fiber digestibility, and the use of next generation sequencing to assess the corn and oats silage microbiome. Dr. Romero has also used next generation sequencing to describe bacterial communities in the liquid and solid fractions of the rumen under the influence of different biological additives.

Juan Romero’s Google Scholar page

Recent Publications:

Adesogan, A. T., K. G. Arriola, Y. Jiang, A. Oyebade, E. M Paula, A. A. Pech-Cervantes, J. J. Romero, L. F. Ferraretto, and D. Vyas. 2019. Technologies for improving fiber utlization. J. Dairy. Sci. In Press.   

Daniel, J. L. P., O. C. M. Queiroz, K. G. Arriola, R. Daetz, F. Basso, J. J. Romero, and A. T. Adesogan. 2018. Effects of homolactic bacterial inoculant on the performance of lactating dairy cows. J. Dairy Sci. 101:5145-5152.

Romero, J. J., M. S. Castillo, Y. Joo, J. Park, F. Tiezzi, and E. Gutierrez-Rodriguez. 2018. Bacterial and fungal population dynamics, fermentation, and aerobic stability of regular- and BMR-corn hybrids ensiled at low moisture with or without a homo and hetero-fermentative inoculant. J. Dairy Sci. 101:3057-3076.

Romero, J. J., M. A. Zarate, I. M. Ogunade, K. G. Arriola, and A. T. Adesogan. 2018. Effects of supplementation with tropical plants on the performance and parasite burden of goats. Asian Austral. J. Anim. Sci. 31:208-217.

Ma, Z. X., F. X. Amaro, J. J. Romero, O. G. Pereira, K. G. Arriola, K. C. Jeong, and A. T. Adesogan. 2017. The capacity of silage inoculant bacteria to bind aflatoxin B1 in vitro and in contaminated corn silage. J. Dairy Sci. 100:7198-7210.

Romero, J.J., Y. Zhao, M.A. Balseca-Paredes, F. Tiezzi, E. Gutierrez-Rodriguez, and M.S. Castillo. 2017. Laboratory silo type and inoculation effects on nutritional composition, fermentation, and bacterial and fungal communities of oat silage. J. Dairy Sci. 100:1812-1828.

Daniel, J. L. P., O. C. M. Queiroz, K. G. Arriola, C. R. Staples, J. J. Romero, J. H. Shin, J. R. Paschoaloto, L. G. Nussio, and A. T. Adesogan. 2016. Effects of maturity at ensiling of bermudagrass and fibrolytic enzyme application on the performance of early-lactation dairy cows. J. Dairy Sci. 99:9716-9723.

Romero, J.J.; Macias, E.G.; Ma, Z.K.; Marcondes, R.; Staples, C.R.; Beauchemin, K.A.; Adesogan, A.T. 2016. Improving the performance of dairy cattle with a xylanase-rich exogenous enzyme preparation. J. Dairy Sci. 99:3486-3496.

Romero, J.J.; Ma, Z.X.; Gonzalez, C.F.; Adesogan, A.T. 2015. Effect of adding cofactors to exogenous fibrolytic enzymes on pre-ingestive fiber hydrolysis and in vitro digestibility of bermudagrass haylage. J. Dairy Sci. 98:4659-4672.

Romero, J.J.; Zarate, M.A.; Adesogan, A.T.  2015. Effect of the dose of exogenous fibrolytic enzyme preparations on pre-ingestive fiber hydrolysis and in vitro digestibility of bermudagrass haylage. J. Dairy Sci. 98:406-417.

Romero, J.J.; Zarate, M.A.; Arriola, K.G.; Gonzalez, C.F.; Silva-Sanchez, C.; Staples, C.R.; Adesogan, A.T. 2015. Screening exogenous fibrolytic enzyme preparations for improved in vitro digestibility of bermudagrass haylage. J. Dairy Sci. 98:2555-2567.

Adesogan, A. T., Z. X. Ma, J. J. Romero, and K. G. Arriola. 2014. Improving cell wall digestion and animal performance with fibrolytic enzymes. J. Anim. Sci. 92:1317-1330.

Arriola, K. G., O. C. M. Queiroz, J. J. Romero, D. Casper, E. Muniz, J. Hamie, and A. T. Adesogan. 2014. Effect of microbial inoculants on the quality and aerobic stability of bermudagrass round-bale haylage. J. Dairy Sci. 98:478-485.

Romero, J.J.; Zarate, M.A.; Queiroz, O.C.M.; Han, J.H.; Shin, J.H.; Staples, C.R.; Brown, W.F.; Adesogan, A.T. 2013. Fibrolytic enzyme and ammonia application effects on the nutritive value, intake, and digestion kinetics of bermudagrass hay in beef cattle. J. Anim. Sci. 91:4345-4356.