Rumen bacterial composition in lambs is affected by β-adrenergic agonist supplementation and heat stress at the phylum level1. (27th September 2018) - Duffy, Erin M; Tietze, Shauna M; Knoell, Allison L; Aluthge, Nirosh D; Fernando, Samodha C; Schmidt, Ty S; Yates, Dustin T; Petersen, Jessica L