Dr. David Pacheco

ScienceTeam Leader Animal Nutrition & Physiology

E: David.Pacheco@agresearch.co.nz


2000 Doctor of Philosophy, Animal Science: “Amino acid metabolism by the mammary gland of dairy cows fed fresh forageâ€. Massey University, New Zealand.
1990 Bachelor of Veterinary Science (First class honours), National Autonomous University of Mexico.

Research interests & activities

My research focuses on the development of nutritional strategies to improve the quantity and quality of products from ruminants. Particularly, I am interested in finding ways to feed animals, so that emissions of urinary nitrogen and enteric methane from ruminants are minimised.
Some of my current research includes development of nutritional strategies to increase the efficiency of nitrogen utilisation in lactating dairy cows, measure the effect of feeding brassica crops on methane emissions, and study of rumen and digestive parameters influencing methane emissions for incorporation in mathematical models to predict methane production from ruminants.


Vetharaniam, I.; Vibart, R.E.; Hanigan, M.D.; Janssen, P.H.; Tavendale, M.H.; & Pacheco, D (2015) A modified version of the Molly rumen model to quantify methane emissions from sheep. Journal of Animal Science 93: 3551-3563 DOI: 10.2527/jas.2015-9037