3 modules describing on a very elementary level how to read a feed test, how to understand what animals need in their diet for nutrients, and how to balance a simple cattle ration using hay and silage.
This lesson offers an understanding of the historic and economic implications of the livestock industry to our state and nation. Learners will recognize the best management practices for specific food animal species, as well as identify the important breeds of each species. This represents a portion of the Introduction to Agriculture, Food, and Natural Resources (AFNR) series in Nebraska middle and high school agricultural education.
This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:
"Ruminants are the only animals not dependent on dietary amino acids as a source of nitrogen. They have ureolytic bacteria in their rumen that hydrolyze urea into ammonia and use it as a nitrogen source. However, very few ureolytic bacteria have been isolated and studied in pure culture to date. To close this gap, researchers established and used a new integrated approach on bacteria from cattle rumens. They started with urease gene (ureC) guided enrichment and then embedded single cells in agarose microspheres for in situ cultivation. This allowed them to isolate and characterize diverse ureolytic bacteria with demonstrated urease activity. The researchers sequenced a subset of the isolated bacteria and found 28 strains from 12 species with urease genes. These bacterial species had not previously been found in the rumen, but this team detected them in metagenomes from 6 ruminant species. The new strains contained unique genes compared to known related strains, indicating new metabolic functions..."
The rest of the transcript, along with a link to the research itself, is available on the resource itself.