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.
What is cloning and do we have clones living among us today? The answers might surprise you or maybe we should say ewe.
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:
"Livestock health is critical to food security, and parasite infections are a major threat. Gastrointestinal helminths have a huge impact on health and welfare of livestock and on food production worldwide. Resistance to parasiticides has become widespread, making the control of these infections highly challenging. Control strategies thus far have targeted either the parasite or the host’s immune response, but a third party may hold the key to addressing this issue. Microbes residing within the livestock gut are likely to contribute to the immunopathology of helminth infections. A recent study examined the relationships between gastrointestinal helminths, the host immune system, and the gut microbiota. Using DNA sequencing and confocal microscopy, researchers assessed fluctuations in the microbiota and local immune responses of vaccinated and unvaccinated helminth-infected sheep. Their results showed that gut microbial composition changed significantly during parasite infection..."
The rest of the transcript, along with a link to the research itself, is available on the resource itself.
This subject will be an intensive introduction to neuroanatomy, involving lectures, demonstrations, and hands-on laboratories, including a brain dissection. The course will not assume any prior knowledge of neuroanatomy, though some general knowledge of brain structures will be helpful.
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.
A civilian propaganda poster showing boys and girls raising sheep, above them are sheep walking along a roadway that leads to the top of the poster where a battle is underway. Caption continues: Write to-day for full information to your County Agent or Club Leader or State Director of Extension State Agricultural College.
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:
"Undernourishment or undernutrition can be caused by a lack of food or a high energy demand, such as during pregnancy and lactation. Undernutrition in production animals disrupts metabolic homeostasis and causes serious health problems, including maternal metabolic disorders and stillbirth. Many production animals are ruminants, named for their unique digestive organ, the rumen, which houses a diverse anaerobic microbiome. The ruminal microbiome allows the host to break down hard-to-digest plant carbohydrates and produce protein that the host later absorbs. But little is known about the effects of undernutrition on the host-microbiome interaction in ruminants. A recent study investigated changes in the ruminal microbiome and epithelium in undernourished pregnant sheep. During undernutrition, the bacterial genes involved in the digestion of carbohydrates and protein synthesis were downregulated. This meant less energy and protein was available to the host and critical signaling pathways were inhibited..."
The rest of the transcript, along with a link to the research itself, is available on the resource itself.