Cecal Microbiota in Genetically Distinct Chicken Lines Reared Under Normal or High Ambient Temperatures

Heat stress has negative effects on poultry productivity, health and welfare resulting in economic losses. Broiler chickens are particularly susceptible to heat stress due to their high metabolic rate, rapid growth, and lack of sweat glands. The commensal intestinal bacterial populations have important physiological role in the host and could ameliorate the negative effect of heat stress on the host. Thus, the aim of this study was to compare changes in the cecal microbiota in four different broiler lines (Giant Jungle Fowl, Athens Canadian Random Bred, 1995 Random Bred, and Modern Random Bred), during heat stress.

热应激对家禽的生产力、健康及福利产生负面影响，进而导致经济损失。由于快速生长、代谢率高以及汗腺缺乏，肉鸡对热应激尤为敏感。共生肠道细菌种群在宿主体内发挥着重要的生理作用，并能够改善热应激对宿主的负面影响。因此，本研究旨在比较在热应激条件下，四种不同的肉鸡品系（巨型丛林鸡、亚特兰大加拿大随机育种、1995年随机育种和现代随机育种）盲肠微生物群的变化。