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Michael Dineen

Research Officer – Animal Nutrition & Physiology

Research Interests

  • Animal Nutrition
  • Animal Physiology
  • Feed Chemistry
  • Feed Formulation
  • Grazing Systems
  • Mathematical Modelling
  • Milk Quality

Current Projects

  • Investigation of milk fat depression in dairy cattle under pasture-based management systems.
  • Evaluation and modification of the Cornell Net Carbohydrate and Protein System (CNCPS) for Irish dairy cows in pasture-based systems.
  • The effect of tetraploid and diploid swards sown with and without clover on milk production.

Education

  • 2020 - Ph.D. in Animal Nutrition - Cornell University, USA.
  • 2016 - M.Phil. in Biological Science - Queen’s University Belfast.
  • 2014 - B.Agr.Sc. - University College Dublin.

 

  • McClearn, B., L. Delaby, T. J. Gilliland, C. Guy, M. Dineen, F. Coughlan, N. Galvin, and B. McCarthy. 2021. The effect of Lolium perenne L. ploidy and Trifolium repens L. inclusion on dry matter intake and production efficiencies of spring-calving grazing dairy cows. J. Dairy Sci. (In press). https://doi.org/10.3168/jds.2020-19753
  • Dineen, M., B. McCarthy, P. Dillon, C. Mattews, D. Ross, and M. E. Van Amburgh. 2021. Microbial composition and omasal flows of bacterial, protozoal, and nonmicrobial amino acids in lactating dairy cows fed fresh perennial ryegrass (Lolium perenne L.) not supplemented or supplemented with rolled barley. J. Dairy Sci. 104:4192-4205. https://doi.org/10.3168/jds.2020-19203
  • Dineen, M., B. McCarthy, D. Ross, A. Ortega, P. Dillon, and M. E. Van Amburgh. 2021. Characterization of the nutritive value of perennial ryegrass (Lolium perenne L.) dominated pastures using updated chemical methods with application for the Cornell Net Carbohydrate and Protein System. Anim. Feed Sci. Technol. 272:114752. https://doi.org/10.1016/j.anifeedsci.2020.114752
  • Dineen, M., B. McCarthy, P. Dillon, P. A. LaPierre, S. Fessenden, C. Mattews, N. Galvin, and M. E. Van Amburgh. 2020. Rumen metabolism, omasal flow of nutrients, and microbial dynamics in lactating dairy cows fed fresh perennial ryegrass (Lolium perenne L.) non-supplemented or supplemented with rolled barley grain J. Dairy Sci. (Accepted)
  • Guy, C., D. Hennessy, T. J. Gilliland, F. Coughlan, B. McClearn, M. Dineen, and B. McCarthy. 2020. White clover incorporation at high nitrogen application levels: results from a 3-year study. Anim. Prod. Sci. 60:187–191. https://doi.org/10.1071/AN18540
  • McClearn, B, L. Delaby, T. J. Gilliland, C. Guy, M. Dineen, F. Coughlan, F. Buckley, and B. McCarthy. 2020. An assessment of the production, reproduction, and functional traits of Holstein-Friesian, Jersey × Holstein-Friesian, and Norwegian Red × (Jersey × Holstein-Friesian) cows in pasture-based systems. J. Dairy Sci. 103:5200–5214. https://doi.org/10.3168/jds.2019-17476 
  • McClearn, B., T. J. Gilliland, L. Delaby, C. Guy, M. Dineen, F. Coughlan, and B. McCarthy. 2019. Milk production per cow and per hectare of spring-calving dairy cows grazing swards differing in Lolium perenne L. ploidy and Trifolium repens L. composition. J. Dairy Sci. 102:8571-8585. https://doi.org/10.3168/jds.2018-16184
  • McClearn, B., T. Gilliland, C. Guy, M. Dineen, F. Coughlan and B McCarthy. 2019. The effect of perennial ryegrass ploidy and white clover inclusion on milk production of dairy cows. Anim. Prod. Sci. 60:143-147. https://doi.org/10.1071/AN18539 
  • Myers, W. A., J. E. Rico, A. N. Davis, A. B. P. Fontoura, M. J. Dineen, B. N. Tate, and J. W. McFadden. 2019. Effects of abomasal infusions of fatty acids and one-carbon donors on hepatic ceramide and phosphatidylcholine in lactating Holstein dairy cows. J. Dairy Sci. 102:7087-7101. https://doi.org/10.3168/jds.2018-16200
  • Dineen, M., L. Delaby, T. Gilliland, and B. McCarthy. 2018. Meta-analysis of the impact of white clover inclusion in perennial ryegrass swards on milk production. J. Dairy Sci. 101:1804–1816. https://doi.org/10.3168/jds.2017-12586
  • Guy, C., D. Hennessy, T. J. Gilliland, F. Coughlan, B. McClearn, M. Dineen, and B. McCarthy. 2018. Comparison of perennial ryegrass, Lolium perenne L., ploidy and white clover, Trifolium repens L., inclusion for herbage production, utilisation and nutritive value. Grass Forage Sci. 73:865–877. https://doi.org/10.1111/gfs.12366

Christopher Heffernan - Investigating milk fat depression in dairy cattle under pasture-based management systems.