新孵化雏鸡心率的无创测定

Non-invasive determination of heart rate in newly hatched chicks.

Tazawa H, Takami M, Kobayashi K, Hasegawa J, Ar A

Department of Electrical and Electronic Engineering, Muroran Institute of Technology, Japan.

Br Poult Sci. 1992 Dec;33(5):1111-8. doi: 10.1080/00071669208417553.

Abstract

Using a flexible piezoelectric probe, we detected non-invasively the cardiogenic precordial movements of domestic fowl chicks and measured heart rate (HR) daily over the first week after hatching (day 0) for comparison with previously measured embryonic HR. 2. HR of the hatchlings was much more variable than embryonic HR. The mean HR at a given age also varied among the 5 chicks measured. 3. The overall mean HR was 280 +/- 20 (SD, n = 5) bpm on day 0. This value was similar to the prepipping HR and lower than that of externally pipped embryos. It increased to 342 +/- 39 bpm 3 days later.

摘要

我们使用一个柔性压电探头，对家鸡雏鸡的心源性胸前运动进行了非侵入性检测，并在孵化后第一周（第0天）每天测量心率（HR），以便与之前测量的胚胎心率进行比较。2. 雏鸡的心率比胚胎心率变化大得多。在测量的5只雏鸡中，给定年龄的平均心率也有所不同。3. 第0天的总体平均心率为280±20（标准差，n = 5）次/分钟。这个值与破壳前心率相似，低于外部破壳胚胎的心率。3天后，心率增加到342±39次/分钟。