Laying hen responses to acute heat stress and carbon dioxide supplementation: II. Changes in plasma enzymes, metabolites and electrolytes.
Exposure of laying hens to an acute heat stress period (38 degrees C) produced a decrease (P < or = 0.05) in blood plasma magnesium compared with pre-heat stress (23 degrees C) levels. Blood plasma glucose, alkaline phosphatase, total protein, uric acid and creatinine were not changed (P > or = 0.05) by exposure to 38 degrees C compared with the first 23 degrees C exposure. Inorganic phosphorus, calcium, potassium and sodium levels were not affected by acute heat-stress exposure or carbon dioxide addition. These results suggest that acute heat stress had no dramatic effect on plasma enzymes, metabolites and electrolytes of laying hens.
Koelkebeck
K W
KW
Department of Poultry Science, Texas Agricultural Experiment Station, Texas A&M University System, College Station 77843, USA.
Odom
T W
TW
D000208:Acute Disease; D000818:Animals; D001786:Blood Glucose / Q000032:analysis; D002245:Carbon Dioxide / Q000494:pharmacology*; D002645:Chickens / Q000097:blood / Q000502:physiology*; D004573:Electrolytes / Q000097:blood*; D004798:Enzymes / Q000097:blood*; D005260:Female; D006358:Hot Temperature; D010058:Oviposition; D013312:Stress, Physiological / Q000209:etiology / Q000503:physiopathology*
D001786:Blood Glucose; D004573:Electrolytes; D004798:Enzymes; D002245:Carbon Dioxide