Embryonic Heart Rate during Development of Domesticated Birds
Embryonic Heart Rate during Development of Domesticated Birds
复制标题
家禽发育过程中的胚胎心率
DOI：
10.1086/physzool.64.4.30157954
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
D. Deeming
中科院分区：
文献类型：
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作者：
H. Tazawa;T. Hiraguchi;O. Kuroda;S. Tullett;D. Deeming
我们非侵入性地测量了日本鹌鹑（Coturnix coturnix japonica）、鸡（Gallus arteriticus）、鸭（Anas platyrhynchos）、火鸡（Meleagris gallopavo）、孔雀（Pavo cristatus）和中国鹅（Anser cygnoides）在大约后半个孵化期的胚胎心率（HR）。在30 s内测定平均每日HR，每5 min持续30 min。HR是可变的，特别是在孵育结束时和pipping期间。鹌鹑、鸡和火鸡蛋的日心率变化的时间趋势相似：在潜伏期的60%-70%时出现暂时性增加，随后在发育末期下降，然后随着肺呼吸空气而增加。鸭、鹅胚胎在胚泡发育后期HR下降。虽然鸭的内部pipping心率的变化是不同的，鹅的心率主要是增加在pipping。只有孔雀胚胎在孵化结束时HR才逐渐增加。这些胚胎的准备期HR与鲜蛋重呈显著异速生长关系。
We have measured noninvasively the embryonic heart rate (HR) of the Japanese quail (Coturnix coturnix japonica), the chicken (Gallus domesticus), the duck (Anas platyrhynchos), the turkey (Meleagris gallopavo), the peafowl (Pavo cristatus), and the Chinese goose (Anser cygnoides) during approximately the last half of the incubation period. The average daily HR was determined over 30 s, every 5 min for 30 min. The HR was variable, particularly toward the end of incubation and during pipping. The time trend of changes in daily HR was similar in quail, chicken, and turkey eggs: a temporal increase occurred at 60%-70% of the incubation period, with a subsequent decrease toward the end of prepipping development, and then an increase with the breathing of air by the lungs. The duck and goose embryos decreased the HR during the last stages of prepipping development. Although the changes in internal pipping HR of the duck were various, the HR of the goose was predominantly increasing during pipping. A gradual increase in HR toward the end of incubation occurred only in the peafowl embryo. The prepipping HR of these embryos had a significant allometric relationship with fresh egg weight.
Matsunaga,C.：比较生物化学和生理学。
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