If you're interested in feeding cattle you're in for a treat! Colleagues of mine, in SoCal are producing an excellent newsletter and podcast called CattleCal. It's a joint effort by Pedro Carvalho, PhD, Assistant Cooperative Extension Specialist in Feedlot Management and Brooke Latack, UCCE Livestock Advisor - Imperial, Riverside, and San Bernardino Counties. 
Their podcast is available on Spotify and ITunes. You can subscribe to the newsletter at http://ceimperial.ucanr.edu/news_359/CattleCal_483/.
Here's a link to one of the May Spotify podcasts:
“Feedlot Research”
https://open.spotify.com/episode/2Nxnf2b6kbbwNYuDgQ6paO
Hope you find it interesting. Let me know what you think.
Author - County Director Mendocino & Lake/Livestock & Natural Resources Advisor - Emeritus