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卧床清洁度对日本黑毛育肥牛睡眠相关蜷缩和伸展躺卧姿势的影响。

Effects of bed cleanliness on tucked and extended sleep-related lying postures of Japanese Black fattening cattle.

作者信息

Dan Shen, Kakihara Hidetoshi, Fukasawa Michiru

机构信息

Graduate School of Agricultural Science, Tohoku University, Osaki, Miyagi 989-6711, Japan.

Western Region Agricultural Research Center, National Agriculture and Food Research Organization, Oda, Shimane 694- 0013, Japan.

出版信息

Anim Biosci. 2023 Nov;36(11):1769-1774. doi: 10.5713/ab.23.0137. Epub 2023 Aug 16.

DOI:10.5713/ab.23.0137
PMID:37592383
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10623039/
Abstract

OBJECTIVE

Resting comfort may influence sleep-related lying postures in cattle. This study aimed to investigate the effects of bed cleanliness on tucked (TSP) and extended (ESP) head positions in sleep-related lying postures.

METHODS

The study was conducted over two experimental periods. In each period, four Japanese Black fattening cattle were assigned to the cleaning treatment (CL), in which bedding material was replaced once during each experimental period. Four cattle were assigned to the control treatment (CON) with no bed cleaning. Daily duration, bout frequency, and bout length of sleep-related lying postures were measured, and bed moisture, ammonia concentration in the air, plasma cortisol, and serotonin concentration were also measured within one week before and after cleaning treatment in each period.

RESULTS

The bed moisture and ammonia concentrations decreased in CL after bed cleaning. Following bed cleaning, the duration and bout frequency of TSP in CL decreased compared to that observed in CON, whereas ESP in CL increased after bed cleaning. Total duration of sleep-related lying postures and cortisol and serotonin levels did not differ between CL and CON.

CONCLUSION

These results suggest that cattle in sleep-related lying postures shifted from tucked head positions to extended head positions in response to improved bed cleanliness.

摘要

目的

静息舒适度可能会影响牛与睡眠相关的躺卧姿势。本研究旨在调查床的清洁程度对与睡眠相关躺卧姿势中头部蜷缩（TSP）和伸展（ESP）位置的影响。

方法

本研究在两个实验阶段进行。在每个阶段，将四头日本黑牛育肥牛分配到清洁处理组（CL），在每个实验阶段更换一次垫料。将四头牛分配到不进行床清洁的对照组（CON）。测量与睡眠相关躺卧姿势的每日时长、发作频率和发作时长，并且在每个阶段清洁处理前后一周内还测量了床的湿度、空气中的氨浓度、血浆皮质醇和血清素浓度。

结果

清洁处理后，CL组的床湿度和氨浓度降低。床清洁后相比于CON组，CL组中TSP的时长和发作频率降低，而CL组中ESP在床清洁后增加。与睡眠相关躺卧姿势的总时长以及皮质醇和血清素水平在CL组和CON组之间没有差异。

结论

这些结果表明，与睡眠相关躺卧姿势中的牛会因床清洁度的改善而从头部蜷缩姿势转变为头部伸展姿势。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3686/10623039/2d3f20c740e0/ab-23-0137f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3686/10623039/2d3f20c740e0/ab-23-0137f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3686/10623039/2d3f20c740e0/ab-23-0137f1.jpg

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