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Related Experiment Video

Updated: May 8, 2026

The Use of an Automated System (GreenFeed) to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals

The Use of an Automated System (GreenFeed) to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals

Published on: September 7, 2015

Physiological changes during feeding and rumination in cows.

Tokushi Komatsu¹, Yumi Higashiyama, Michiru Fukasawa

¹NARO Tohoku Agricultural Research Center, Morioka, Iwate.

Animal Science Journal = Nihon Chikusan Gakkaiho

|September 5, 2013

Summary

This summary is machine-generated.

Cattle feeding and rumination show distinct physiological changes. Plasma non-esterified fatty acids (NEFA) decrease during feeding and temporarily during rumination, offering insights into ruminant metabolism.

Keywords:

cows feeding growth hormone non-esterified fatty acids rumination

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Adapting Human Videofluoroscopic Swallow Study Methods to Detect and Characterize Dysphagia in Murine Disease Models

Adapting Human Videofluoroscopic Swallow Study Methods to Detect and Characterize Dysphagia in Murine Disease Models

Published on: March 1, 2015

Area of Science:

Animal Physiology
Ruminant Metabolism
Behavioral Science

Background:

Understanding the physiological responses of cattle during feeding and rumination is crucial for optimizing animal health and productivity.
Previous research has focused on overall metabolic changes, but detailed temporal dynamics during specific behaviors remain less understood.

Purpose of the Study:

To investigate the real-time physiological and metabolic changes in cattle during feeding and rumination.
To correlate behavioral patterns with specific blood metabolite concentrations.

Main Methods:

Utilized an automated blood sampling system for frequent (every 5 min) blood collection.
Simultaneously recorded feeding, ruminating, and other behaviors using video analysis.
Measured plasma concentrations of non-esterified fatty acids (NEFA), glucose, insulin, and growth hormone (GH).

Main Results:

Plasma NEFA concentrations continuously decreased during feeding and showed a temporary decrease during rumination.
Plasma glucose concentrations decreased during feeding and remained stable during rumination.
No characteristic fluctuations in plasma insulin and growth hormone (GH) were observed during feeding or rumination, though insulin correlated with glucose.

Conclusions:

The study highlights distinct metabolic profiles during feeding versus rumination in cattle, particularly concerning NEFA dynamics.
The combination of automated blood sampling and behavioral observation provides novel insights into the physiological underpinnings of ruminant behaviors.
Further research is warranted to elucidate the mechanisms behind the temporary NEFA decrease during rumination.