Alexander Hristov | Institutes of Energy and the Environment

anh13@psu.edu

(814) 863-3669

324 Henning Building
Shortlidge Road
University Park, PA 16802

Elsevier Pure Profile

IEE Research Themes

Climate and Ecosystem Change

Health and the Environment

Affiliate Researcher

Professor, Animal Science

Research Summary

Research interests include nutrient management, particularly reducing nutrient excretions from dairy operations; whole-farm nutrient balances; estimating ammonia losses from manure; and use of stable isotopes to trace sources of nutrient pollution.

In the News

February 9, 2023

Researcher gets $2M grant to test feed additives’ effect on methane emissions

November 21, 2022

Less burping, more meat and milk - how livestock farmers can help tackle the climate crisis

May 10, 2022

Existing technologies can help world meet agricultural methane targets by 2030

December 1, 2020

Researchers aim to 'upcycle' nutrient waste on farms using duckweed

August 4, 2017

Institutes of Energy and the Environment seed grant recipients announced

June 21, 2017

Office for General Education announces Integrative Studies Seed Grant awards

Research Keywords

These keywords and phrases come from the publications and other research output of this person. See other researchers related to these topics by clicking on any keyword.

Projects

Holstein cows grazing in a grassy farm pasture with red barn and silo

Toward a Lower-Carbon Food System: Quantification of Methane Emissions from Animal Agriculture

Recent Publications

Prediction of enteric methane emissions by sheep using an intercontinental database

Belanche, A., Hristov, A. N., van Lingen, H. J., Denman, S. E., Kebreab, E., Schwarm, A., Kreuzer, M., Niu, M., Eugène, M., Niderkorn, V., Martin, C., Archimède, H., McGee, M., Reynolds, C. K., Crompton, L. A., Bayat, A. R., Yu, Z., Bannink, A., Dijkstra, J., Chaves, A. V., & 22 othersClark, H., Muetzel, S., Lind, V., Moorby, J. M., Rooke, J. A., Aubry, A., Antezana, W., Wang, M., Hegarty, R., Hutton Oddy, V., Hill, J., Vercoe, P. E., Savian, J. V., Abdalla, A. L., Soltan, Y. A., Gomes Monteiro, A. L., Ku-Vera, J. C., Jaurena, G., Gómez-Bravo, C. A., Mayorga, O. L., Congio, G. F. S. & Yáñez-Ruiz, D. R., Jan 15 2023, In: Journal of Cleaner Production. 384, 135523.

Research output: Contribution to journal › Article › peer-review

Improving the accuracy of beef cattle methane inventories in Latin America and Caribbean countries

Congio, G. F. S., Bannink, A., Mayorga, O. L., Rodrigues, J. P. P., Bougouin, A., Kebreab, E., Carvalho, P. C. F., Berchielli, T. T., Mercadante, M. E. Z., Valadares-Filho, S. C., Borges, A. L. C. C., Berndt, A., Rodrigues, P. H. M., Ku-Vera, J. C., Molina-Botero, I. C., Arango, J., Reis, R. A., Posada-Ochoa, S. L., Tomich, T. R., Castelán-Ortega, O. A., & 11 othersMarcondes, M. I., Gómez, C., Ribeiro-Filho, H. M. N., Gere, J. I., Ariza-Nieto, C., Giraldo, L. A., Gonda, H., Cerón-Cucchi, M. E., Hernández, O., Ricci, P. & Hristov, A. N., Jan 15 2023, In: Science of the Total Environment. 856, 159128.

Research output: Contribution to journal › Article › peer-review

Effects of phytonutrients and yeast culture supplementation on lactational performance and nutrient use efficiency in dairy cows

Martins, L. F., Oh, J., Melgar, A., Harper, M., Wall, E. W. & Hristov, A. N., 2023, (Accepted/In press) In: Journal of dairy science.

Research output: Contribution to journal › Article › peer-review

Full adoption of the most effective strategies to mitigate methane emissions by ruminants can help meet the 1.5 °C target by 2030 but not 2050

Arndt, C., Hristov, A. N., Price, W. J., McClelland, S. C., Pelaez, A. M., Cueva, S. F., Oh, J., Dijkstra, J., Bannink, A., Bayat, A. R., Crompton, L. A., Eugéne, M. A., Enahoro, D., Kebreab, E., Kreuzer, M., McGee, M., Martin, C., Newbold, C. J., Reynolds, C. K., Schwarm, A., & 4 othersShingfield, K. J., Veneman, J. B., Yáñez-Ruiz, D. R. & Yu, Z., May 17 2022, In: Proceedings of the National Academy of Sciences of the United States of America. 119, 20, e2111294119.

Research output: Contribution to journal › Article › peer-review

Prediction of nitrogen excretion from data on dairy cows fed a wide range of diets compiled in an intercontinental database: A meta-analysis

Bougouin, A., Hristov, A., Dijkstra, J., Aguerre, M. J., Ahvenjärvi, S., Arndt, C., Bannink, A., Bayat, A. R., Benchaar, C., Boland, T., Brown, W. E., Crompton, L. A., Dehareng, F., Dufrasne, I., Eugène, M., Froidmont, E., van Gastelen, S., Garnsworthy, P. C., Halmemies-Beauchet-Filleau, A., Herremans, S., & 23 othersHuhtanen, P., Johansen, M., Kidane, A., Kreuzer, M., Kuhla, B., Lessire, F., Lund, P., Minnée, E. M. K., Muñoz, C., Niu, M., Nozière, P., Pacheco, D., Prestløkken, E., Reynolds, C. K., Schwarm, A., Spek, J. W., Terranova, M., Vanhatalo, A., Wattiaux, M. A., Weisbjerg, M. R., Yáñez-Ruiz, D. R., Yu, Z. & Kebreab, E., Sep 2022, In: Journal of dairy science. 105, 9, p. 7462-7481 20 p.

Research output: Contribution to journal › Article › peer-review

Prediction of enteric methane production and yield in dairy cattle using a Latin America and Caribbean database

Congio, G. F. S., Bannink, A., Mayorga, O. L., Rodrigues, J. P. P., Bougouin, A., Kebreab, E., Silva, R. R., Maurício, R. M., da Silva, S. C., Oliveira, P. P. A., Muñoz, C., Pereira, L. G. R., Gómez, C., Ariza-Nieto, C., Ribeiro-Filho, H. M. N., Castelán-Ortega, O. A., Rosero-Noguera, J. R., Tieri, M. P., Rodrigues, P. H. M., Marcondes, M. I., & 3 othersAstigarraga, L., Abarca, S. & Hristov, A. N., Jun 15 2022, In: Science of the Total Environment. 825, 153982.

Research output: Contribution to journal › Article › peer-review

Prediction of enteric methane production and yield in sheep using a Latin America and Caribbean database

Congio, G. F. S., Bannink, A., Mayorga, O. L., Rodrigues, J. P. P., Bougouin, A., Kebreab, E., Carvalho, P. C. F., Abdalla, A. L., Monteiro, A. L. G., Ku-Vera, J. C., Gere, J. I., Gómez, C. & Hristov, A. N., Oct 2022, In: Livestock Science. 264, 105036.

Research output: Contribution to journal › Article › peer-review

Symposium review: Effective nutritional strategies to mitigate enteric methane in dairy cattle

Hristov, A. N., Melgar, A., Wasson, D. & Arndt, C., Oct 2022, In: Journal of dairy science. 105, 10, p. 8543-8557 15 p.

Research output: Contribution to journal › Review article › peer-review

Corrigendum to “Lactational performance, enteric gas emissions, and plasma amino acid profile of dairy cows fed diets with soybean or canola meals included on an equal protein basis” (Journal of Dairy Science (2021) 104(3) (3052–3066), (S0022030221000138), (10.3168/jds.2020-18851))

Lage, C. F. A., Räisänen, S. E., Stefenoni, H., Melgar, A., Chen, X., Oh, J., Fetter, M. E., Kniffen, D. M., Fabin, R. A. & Hristov, A. N., May 2022, In: Journal of dairy science. 105, 5, p. 4690 1 p.

Research output: Contribution to journal › Comment/debate › peer-review

Effects of an exogenous enzyme preparation extracted from a mixed culture of Aspergillus spp. on lactational performance, metabolism, and digestibility in primiparous and multiparous cows

Martins, L. F., Oh, J., Harper, M., Melgar, A., Räisänen, S. E., Chen, X., Nedelkov, K., Karnezos, T. P. & Hristov, A. N., Sep 2022, In: Journal of dairy science. 105, 9, p. 7344-7353 10 p.

Research output: Contribution to journal › Article › peer-review

The effect of 3-nitrooxypropanol, a potent methane inhibitor, on ruminal microbial gene expression profiles in dairy cows

Pitta, D. W., Indugu, N., Melgar, A., Hristov, A., Challa, K., Vecchiarelli, B., Hennessy, M., Narayan, K., Duval, S., Kindermann, M. & Walker, N., Dec 2022, In: Microbiome. 10, 1, 146.

Research output: Contribution to journal › Article › peer-review

Corrigendum to “Lactational performance and plasma and muscle amino acid concentrations in dairy cows fed diets supplying 2 levels of digestible histidine and metabolizable protein” (J. Dairy Sci. 105:170–187) (Journal of Dairy Science (2022) 105(1) (170–187), (S0022030221009620), (10.3168/jds.2021-20800))

Räisänen, S. E., Lage, C. F. A., Zhou, C., Melgar, A., Silvestre, T., Wasson, D. E., Cueva, S. F., Werner, J., Takagi, T., Miura, M. & Hristov, A. N., Jun 2022, In: Journal of dairy science. 105, 6, p. 5544 1 p.

Research output: Contribution to journal › Comment/debate › peer-review

Lactational performance and plasma and muscle amino acid concentrations in dairy cows fed diets supplying 2 levels of digestible histidine and metabolizable protein

Räisänen, S. E., Lage, C. F. A., Zhou, C., Melgar, A., Silvestre, T., Wasson, D. E., Cueva, S. F., Werner, J., Takagi, T., Miura, M. & Hristov, A. N., Jan 2022, In: Journal of dairy science. 105, 1, p. 170-187 18 p.

Research output: Contribution to journal › Article › peer-review

Production effects and bioavailability of N-acetyl-L-methionine in lactating dairy cows

Räisänen, S. E., Zhu, X., Zhou, C., Lage, C. F. A., Fetter, M., Silvestre, T., Stefenoni, H., Wasson, D. E., Cueva, S. F., Eun, J. S., Moon, J. O., Park, J. S. & Hristov, A. N., Jan 2022, In: Journal of dairy science. 105, 1, p. 313-328 16 p.

Research output: Contribution to journal › Article › peer-review

Effects of a combination of Capsicum oleoresin and clove essential oil on metabolic status, lactational performance, and enteric methane emissions in dairy cows

Silvestre, T., Räisänen, S. E., Cueva, S. F., Wasson, D. E., Lage, C. F. A., Martins, L. F., Wall, E. & Hristov, A. N., Nov 2022, In: Journal of dairy science. 105, 12, p. 9610-9622 13 p.

Research output: Contribution to journal › Article › peer-review