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首页> 外文期刊>Domestic Animal Endocrinology >Protective effects of the phytogenic feed additive 'comfort' on growth performance via modulation of hypothalamic feeding- and drinking-related neuropeptides in cyclic heat-stressed broilers
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Protective effects of the phytogenic feed additive 'comfort' on growth performance via modulation of hypothalamic feeding- and drinking-related neuropeptides in cyclic heat-stressed broilers

机译:植物饲料添加剂“舒适”对循环热应力肉鸡中下丘脑饲养和饮用相关神经肽的生长性能的保护作用

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摘要

Identification of alternatives to antibiotics in livestock and poultry is necessary. Fueled by consumer preferences, phytogenic feed additives are increasingly used in the food system; however, their mode of action is not well defined. Here, we used broiler chickens, in which appetite and feeding behavior regulation are controlled by complex mechanisms, to determine the effect of the phytogenic feed additive "comfort" (PFA-C) as well as its underlying molecular mechanisms on growth performance in heat-stressed broiler chickens. Heat stress significantly increased birds' core body temperature, water intake, and the hypothalamic expression of heat shock protein (HSP) 70, whereas it decreased feed intake, BW, and woody breast incidence. Phytogenic feed additive "comfort" supplementation downregulated the hypothalamic expression of HSP70, reduced core body temperature, increased feed and water intake, and improved BW in HS broilers. At molecular levels, the effect of PFA-C on growth performance seemed to be mediated by modulation of hypothalamic expression of melanocortin receptor 2, arginine vasopressin, aquaporin 2, and sodium and potassium-transporting ATPase subunit beta 1 polypeptides. In summary, PFAC supplementation ameliorates heat stress productivity losses via a potential cytoprotective effect, reduction of hypothalamic intracellular stress, and modulation of hypothalamic feedingand drinking-related polypeptide expression. Published by Elsevier Inc.
机译:有必要在牲畜和家禽中确定抗生素的替代品。在消费者偏好的推动下,植物源性饲料添加剂越来越多地用于食品系统;然而,他们的行动方式并没有得到很好的定义。在这里,我们使用肉鸡,其中食欲和喂养行为调节由复杂的机制控制,以确定植物源性饲料添加剂“舒适”(PFA-C)及其潜在的分子机制对热应激肉鸡生长性能的影响。热应激显著增加了鸟类的核心体温、摄水量和下丘脑热休克蛋白(HSP)70的表达,而降低了采食量、体重和木本乳房发病率。植物源性饲料添加剂“舒适”补充剂可下调HS肉鸡下丘脑HSP70的表达,降低核心体温,增加饲料和水分摄入,改善体重。在分子水平上,PFA-C对生长性能的影响似乎是通过调节下丘脑黑素皮质素受体2、精氨酸加压素、水通道蛋白2和钠钾转运ATP酶亚单位β1多肽的表达来介导的。总之,补充PFAC可通过潜在的细胞保护作用、降低下丘脑细胞内应激、调节下丘脑摄食和饮酒相关多肽的表达来改善热应激生产力的损失。爱思唯尔公司出版。

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