https://www.ucdavis.edu/food/news/making-cattle-more-sustainable/

By Amy Quinton on June 27, 2019 in Feeding a Growing Population

Inside the University of California, Davis, dairy barn, a Holstein cow has its head and neck sealed airtight inside a large, clear-plastic chamber that resembles an incubator for newborns. While giant tubes above the chamber pump air in and push air out, the cow calmly stands and eats her feed. Equipment inside a nearby trailer spits out data.

This is how Frank Mitloehner measures gases that come from cows’ stomachs and ultimately contribute to global warming. Quantifying these emissions is key to mitigating them, and Mitloehner is one of several UC Davis researchers investigating economical ways to make livestock production more environmentally sustainable around the globe.