In ovo temperature manipulation influences post-hatch muscle growth in the turkey
In ovo temperature manipulation influences post-hatch muscle growth in the turkey
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DOI：
10.1080/00071660412331286190
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发表时间：
2004-08-01
影响因子：
2
通讯作者：
Stickland, NC
中科院分区：
文献类型：
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作者：
Maltby, V;Somaiya, A;Stickland, NC
1.以半腱肌为模型，研究了短时间调控孵化温度对火鸡肌肉发育的影响。实验1.鸡蛋在37.5℃的控制温度下孵化。在0至4、5至8、9至12、13至16、17至20或21至24天的4d周期内，将卵子转移到38.5℃或35.5℃。温度为38.5℃，能量密度为5~8℃和9~12℃时，肌核数量和肌纤维数量分别增加。实验2.鸡蛋在37.5℃的控制温度下孵化。在5-8℃时，将ED卵转移到38.5℃或35.5℃。温度处理的胚胎显示，与对照组相比，半腱肌肌的分化(肌生成素表达)延迟。在早期孵化中控制孵化温度4d可以改变火鸡肌肉的发育，而没有观察到畸形或孵化率下降。我们推测，温度的升高可能会导致孵化后鸟类肌肉生长的改善。
1. The effect of manipulating egg incubation temperature for short periods on turkey muscle development was determined using the M. semitendinosus, a thigh muscle, as the model.2. Experiment 1. Eggs were incubated at a control temperature of 37.5degreesC. For a 4-d period of 0 to 4, 5 to 8, 9 to 12, 13 to 16, 17 to 20 or 21 to 24 embryonic days (ED) eggs were transferred to either 38.5 or 35.5degreesC. A regime of 38.5degreesC at 5 to 8 and 9 to 12 ED caused an increased myonuclei number and muscle fibre number, respectively.3. Experiment 2. Eggs were incubated at a control temperature of 37.5degreesC. At 5 to 8 ED eggs were transferred to 38.5 or 35.5degreesC. Temperature-manipulated embryos showed a delay in differentiation (myogenin expression) of the semitendinosus muscle compared to controls.4. Manipulating the incubation temperature for 4 d in early incubation alters muscle development in the turkey with no observation of deformities or reduction in hatchability. We speculate that this increase in temperature may result in an improved muscle growth in the post-hatch bird.