Interactive Effects of Ammonia and Light Intensity on Hematochemical Variables in Broiler Chickens

H. A. Olanrewaju, J. P. Thaxton, W. A. Dozier, J. Purswell, S. D. Collier, S. L. Branton
2008 Poultry Science  
This study examined the influence of early atmospheric ammonia exposure, light intensity throughout rearing, and their interaction on blood gases, electrolytes, and acid-base balance in broiler chickens under environmentally controlled conditions. The experiment consisted of a 3 × 3 factorial arranged in a randomized complete block design, with trials being replicated over time. The 9 treatments consisted of 3 levels (0, 25, and 50 ppm) of ammonia concentrations for 14 d and levels (0.2, 2.0,
more » ... d 20 lx) of light intensities from 8 to 36 d of age. Venous blood samples were collected on d 6, 11, 14, and 35. On d 6, partial pressure of CO 2 and Na + increased significantly (P ≤ 0.05), whereas partial pressure of O 2 , pH, and K + decreased with increasing ammonia concentration. As light intensity increased, pO 2 and K + were significantly (P ≤ 0.05) reduced. Ammonia × light intensity interactions were observed for hemoglobin, hematocrit,
doi:10.3382/ps.2007-00486 pmid:18577624 fatcat:7kui4qymwjhnhdeuns7qiup2iq