Meat productivity of chicken broilers when using stress protectors during the pre-slaughter period

Abstract

Abstract Industrial birds experience stress factors which decrease productivity and cause economic damages to the food security of Russia. However, the modern agrarian science develops and applies stress protectors which increase growth, development and safety of chickens and their meat productivity. The “PIK Antistress” at doses of 1269 and 1693 g/t used 5 days before slaughter increased the average daily weight gain by 0.7-6.6%, the absolute weight gain by 2.3-9.4%, livability by 1.5-2.3%, the ratio of feeding efficiency by 4.5-24.6%, the amount of meat by 0.6-1.2%, the category of meat by 18.5-20.0%.