2024年11月14日 · During rumination, the cud (partially digested feed) is regurgitated, re-chewed, and re-swallowed. Chewing during rumination is slower and more consistent than during eating. The rumination process stimulates saliva production to help buffer the rumen pH and decrease feed particle size, allowing it to pass from the reticulum into the omasum.

2021年1月7日 · In this study, we introduce an innovative monitoring method using Convolution Neural Network (CNN)-based deep learning models. The classification process is conducted under two main labels: ruminating and other, using all …

2018年6月1日 · Feed restriction and long particles (≥19 mm) have a greater effect on eating time, whereas intake of forage neutral detergent fiber and medium particles (4–19 mm) affects rumination time. It is well entrenched in the literature that promoting chewing increases salivary secretion of dairy cows, which helps reduce the risk of acidosis.

Bender et al. evaluated daily variation in body weight, milk production, and rumination activity in dairy cows and observed rumination to average 461.1 min/day, with a standard deviation of 6.1 min among days within a pen, 128.0 min among individual cows within a pen, and 43.6 min among days within individual cows.

2024年8月26日 · The cumulative daily time of rumination varies according to season, species, and diet and lasts 276–624 min/day in adult cows. One rumination cycle is composed of four phases (regurgitation, remastication, resalivation, and redeglutition) and takes approximately 45 s to one minute to complete.

Rumination is a proven direct indicator of cow wellbeing and health. As such, dairy producers, veterinarians, and nutritionists alike have long relied on cud chewing as a key indicator of dairy

2012年6月1日 · Rumination and lying times are positively associated, helping to explain why rumination peaks at night when cows are most likely to be lying down (and least likely to be feeding). However, we caution the extrapolation of our results to lactating dairy cattle, as our observations were limited to cows during the dry period.

2023年9月6日 · Heat-stressed cows eat less and hence ruminate less, which results in fewer buffering substances entering the rumen; rumination is the primary stimulus for saliva synthesis.

Rumination is controlled by dietary and management factors such as fiber amount and particle size, degree of overcrowding, grouping strategies, and other potential stressors in the management environment. Rumination reflects cow health …

2023年9月21日 · The method proposed in this paper is based on image detection technology that can realize automatic monitoring and analysis of cow rumination behavior in large-scale breeding. Traditional monitoring of cow rumination behavior requires manual observation and recording, which is inefficient and prone to errors.