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首页> 外文期刊>Poultry Science >Skin surface temperature of broiler chickens is correlated to body core temperature and is indicative of their thermoregulatory status.
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Skin surface temperature of broiler chickens is correlated to body core temperature and is indicative of their thermoregulatory status.

机译：肉鸡的皮肤表面温度与身体核心温度相关，并指示其体温调节状态。

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摘要

Extreme thermal conditions may dramatically affect the performance of broilers and other domestic animals, thereby impairing animal welfare and causing economic losses. Although body core temperature is the parameter that best reflects a bird's thermal status, practical and physiological obstacles make it irrelevant as a source of information on the thermal status of commercial flocks. Advances in the technology of infrared thermal imaging have enabled highly accurate, noncontact, and noninvasive measurements of skin surface temperature. Providing that skin surface temperature correlates with body temperature, this technology could enable acquisition of reliable information on the thermal status of animals, thereby improving diagnoses of environmental stress in a flock. This study of broiler chickens found a strong positive correlation between body core temperature and facial surface temperature, as recorded by infrared thermal imaging. The correlation was equally strong at all ages from 8 to 36 d during exposure to acute heat stress with or without proper ventilation and after acclimation to chronic heat exposure. A similar correlation was found by measurements in commercial flocks of broilers. Measurements of blood plasma concentrations of corticosterone, thyroid hormones, and arginine vasotocin confirmed that metabolic activity was low after acclimation to chronic exposure to heat, whereas ventilation was at least as efficient as acclimation in reducing thermal stress but did not impair metabolism. In light of these novel results, commercial benefits of infrared thermal imaging technology are suggested, especially in climate control for commercial poultry flocks. The application of this technique to other domestic animals should be investigated in future experiments.
机译：极端的高温条件可能会极大地影响肉鸡和其他家畜的性能，从而损害动物的福利并造成经济损失。尽管体温是最能反映禽类热状况的参数，但实际和生理上的障碍使其与作为商业鸡群热状况的信息来源无关。红外热成像技术的进步已经实现了对皮肤表面温度的高精度，非接触式和非侵入式测量。只要皮肤表面温度与体温相关，该技术就可以获取有关动物热状况的可靠信息，从而改善对鸡群环境压力的诊断。这项对肉鸡的研究发现，通过红外热成像技术可以发现，鸡体核心温度与面部表面温度之间存在很强的正相关。在暴露于有或没有适当通风的急性热应激期间和适应慢性热暴露后的8至36 d的各个年龄段，这种相关性均很强。通过对商品肉鸡群的测量发现相似的相关性。血浆皮质酮，甲状腺激素和精氨酸血管收缩素的浓度测定证实，在长期暴露于热中后，代谢活性较低，而通气在降低热应激方面至少与适应性一样有效，但不损害代谢。根据这些新颖的结果，提出了红外热成像技术的商业利益，特别是在商业家禽群的气候控制中。该技术在其他家畜中的应用应在以后的实验中进行研究。

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