MEAT PRODUCTIVITY OF BROILER CHICKENS WHEN INCLUDING SUB-PRO PROBIOTIC IN THEIR DIET

The possibility of including SUB-PRO probiotic instead Maxus G feed antibiotic in the diet broiler chickens Ross 308 cross was studied to obtain products free drugs for antimicrobial resistance usage. dynamics live weight and carcass cockerels at 1-, 21-, 28-, 34-, 38- 42-days old determined. males control group (group 1) reached 2619 ± 44.9, experimental - 2739 46.2 or more by 4.38%, P?0.05 42 days age, those which received ( 3) 2677 45.1 (further, meat productivity latter not studied, since they are practical importance). mass carcasses equal 1704 23.1 g, is 4.60% than control, P?0.05; relative muscle tissue increased with age 10.78% comparison 1-day -olds, 10.0%, whereas bones decreased 16.75 16.59%, respectively (by difference); diameter fibers superficial pectoral 42-day-old broilers 6.94 times amounted 57.9 ?m; terms microbiological parameters, meets requirements interstate standard GOST 31468—2012. At days, showed dystrophic changes form an expansion endomysium diameter, accumulation interfiber fluid (albuminous degeneration), while some have vacuoles infiltration immunocompetent cells (leukocytes, phagocytes). Adding broilers’ does reduce productivity, but excludes negative consequences antibiotics.