Mortality from heat stress in broiler chickens influenced by anticoccidial drugs.
The relationship of anticoccidial drug to heat stress mortality in broilers was studied in a replicated floor-pen experiment during a period of hot weather in Georgia. Overall mortality during the 8-week study averaged 6% in unmedicated and monensin-medicated birds or lasalocid-medicated birds, 10% in arprinocid-medicated birds, and 36% in nicarbazin-medicated birds. Most of the death losses were attributed to heat stress. Maximum death losses coincided with three periods of hot weather, when the birds were 22, 33, or 49 days old. Of 114 dead birds in the nicarbazin treatment, 68 were male and 46 were female.
D000818:Animals; D002224:Carbanilides / Q000494:pharmacology*; D002645:Chickens; D005260:Female; D006359:Heat Exhaustion / Q000401:mortality / Q000662:veterinary*; D008297:Male; D009528:Nicarbazin / Q000494:pharmacology*; D011201:Poultry Diseases / Q000401:mortality
D002224:Carbanilides; D009528:Nicarbazin