A journal article is going to be sent for publication in ANIMALS Journal, data was obtained from Integrity Project Task 2.4 that evaluated whole cottonseed supplementation in crossbred Brafors heifers fed low-quality forages. As result, Total and forage intake decreased with supplementation, as well as methane production that decreased by 33 % with cottonseed supplementation compared to the control. So we conclude that supplementation with whole cottonseed in tropical forage based diets is a suitable strategy to mitigate methane emissions in tropical regions.