Related Experiment Video
Updated: Sep 18, 2025
17:15
Catheterization of Intestinal Loops in Ruminants
Published on: June 11, 2009
13.8K
Review: Keystone issues in ruminant science I. Feed intake control in ruminants
1Inter|Pares International Development Consultants, Idar-Oberstein, Germany.
Animal : an International Journal of Animal Bioscience
|June 20, 2025
Summary
Ruminant feed intake is primarily controlled by the liver's energy status, not just physical factors. Decades of research confirm this, yet practical nutritional models remain static, hindering efficient ruminant production.
Area of Science:
- Animal Nutrition
- Ruminant Physiology
- Feed Intake Regulation
Background:
- The dominant bi-phasic model of ruminant feed intake control lacks experimental support.
- Ruminant and monogastric intake control mechanisms share similarities despite differing metabolic substrates.
Purpose of the Study:
- To review and update findings on feed intake control in ruminants.
- To evaluate the progress in nutritional models for ruminant production over 25 years.
Main Methods:
- Literature review of experimental evidence on ruminant feed intake control.
- Analysis of theoretical concepts and their impact on practical nutritional models.
Main Results:
- The liver's ATP generation is a key central control element for feed intake.
- Peripheral metabolism and nitrogen availability significantly influence feed intake dynamics.
- Static factorial systems fail to optimize feed-animal interactions.
Conclusions:
- New evidence supports the central role of metabolic control in ruminant feed intake.
- Lack of updated nutritional models hinders optimization of feed resource utilization.
- Future research should address limitations in current 'big data' approaches for ruminant nutrition.
Keywords:
Big data in nutritionFeed intake controlFeed requirementsMetabolic intake controlOptimised feedingMore Related Videos
Related Concept Videos
01:30Regulation of Food Intake
533
Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
533
01:28Chronic Kidney Disease III: Interprofessional Care
84
Chronic kidney disease (CKD) requires collaborative and comprehensive management. CKD progresses through stages and can lead to end-stage kidney disease (ESKD) if untreated. Interprofessional collaboration and patient education are crucial, enabling patients to manage their health and improve their quality of life.Diagnostic approach for chronic kidney diseaseThe diagnosis of CKD primarily focuses on the glomerular filtration rate (GFR), which assesses kidney function by measuring how well...
84
01:15Enteral Nutrition II: Nasointestinal and Gastrostomy Feeding
307
Enteral nutrition encompasses various methods of delivering nutrition directly to the gastrointestinal (GI) tract, bypassing traditional oral intake. It is particularly beneficial for patients who cannot eat by mouth but have a functioning digestive system. Key methods include nasointestinal feeding, gastrostomy, and jejunostomy, each suited to different clinical scenarios based on the patient's needs and condition.
Nasointestinal Feeding
Nasointestinal feeding involves placing a tube...
Nasointestinal Feeding
Nasointestinal feeding involves placing a tube...
307
02:35Key Elements for Plant Nutrition
22.0K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
22.0K
01:30Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy
430
Various diagnostic tests are employed in the diagnostic process for Inflammatory Bowel Disease (IBD), particularly to differentiate between Crohn's disease and ulcerative colitis.
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
430
01:39Keystone Species
22.4K
Measures of species biodiversity, such as richness (i.e., the number of species present) and evenness (i.e., their relative abundance), describe an ecological community’s structure. Many factors affect community structure, including abiotic factors (e.g., sunlight and nutrients), disturbances (e.g., fire or flood), species interactions (e.g., predation or competition), and chance events (e.g., foreign species invasion). Certain species—such as keystone species—also play a...
22.4K