Effects Of Ammonia Exposure On Growth Performance And Cytokines In The Serum, Trachea, And Ileum Of Broilers
文献类型: 外文期刊
作者: Zhou, Y; Liu, QX; Li, XM; Ma, DD; Xing, S; Feng, JH; Zhang, MH
作者机构:
关键词: Ammonia; Cytokine; Growth Performance; Broiler
期刊名称: POULTRY SCIENCE
ISSN:
年卷期: 2020 年 99 卷 5 期
页码:
收录情况: JCR(2021版)
摘要: This study investigated the effects of ammonia (NH3) exposure (0, 15, 25, and 35 ppm) on growth performance and cytokines in the serum, trachea, and ileum of broilers. A total of 288 22-day-old male broiler chickens were assigned to 4 treatment groups with 6 replicates of 12 chickens for a 21-D trial period. Growth performance and cytokines (IL-1b, IL-6, and IL-10) concentrations in the serum, trachea, and ileum were measured in response to 3, 7, 14, or 21 D of exposure to NH3. Correlations between cytokines in the serum, trachea, and ileum and growth performance, and between tracheal and ileal cytokines, were also analyzed. Results showed that exposure to 15 ppm NH3 did not influence the growth performance, but exposure to both 25 ppm and 35 ppm NH3 decreased the growth performance compared to that of the control group. Exposure to 15 ppm NH3 for 3 D increased IL-6 concentrations and induced an inflammatory response in the trachea and ileum, whereas exposure to 15 ppm NH3 for 7 D increased IL-10 concentrations and induced an anti-inflammatory response in the ileum. Exposure to 25 ppm NH3 induced an inflammatory response in the serum, trachea, and ileum after 3 D and induced an anti-inflammatory response in the ileum after 7 D. Exposure to 35 ppm NH3 for 3 D induced both inflammatory and antiinflammatory responses in the trachea and ileum. Furthermore, increases in cytokines in the serum, trachea, or ileum were accompanied by a decrease in BW, ADFI, ADG, and an increase of feed/gain (F/G) from 7 D to 21 D. In addition, tracheal cytokine, especially IL-1b, was positively correlated with ileal cytokine IL-1b. These results indicated that the low growth performance associated with NH3 exposure may be due in part to an increase in cytokines, and the inflammatory response in the trachea and ileum may be related to cross-talk by cytokines such as IL-6, IL-10, and, in particular, IL-1b.
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