The Effect of Single and Combined Use of Probiotic and Humate on Fattening Performance, Carcass Characteristics and Internal Organs of Broiler Chickens

The aim of this study was to evaluate the both single and combined effects of probiotic and humate on performance and carcass characteristics of broiler chickens. Totally 200 one-day old broiler chickens Ross 308 were divided into one control group and three experimental groups. The control group (n = 50) was without probiotic and humate, experimental groups with 3.7 ml on 1 litre of drinking water (Group P, n = 50), 50 g per 10 kg of feed (Group H, n = 50) and 3.7 ml probiotic per litre of drinking water + 50 g humate per 10 kg of feed (Group P + H, n = 50), respectively. Application of probiotic and humate both single and combined statistically significant increased (p < 0.05) final body weight and reduced feed consumption (p < 0.05). From carcass characteristics, application of probiotic and probiotic and humate combination statistically significant decreased (p < 0.05) abdominal fat weight. Supplementation of single and combined use of probiotic and humate no significantly affected (p > 0.05) breast and thighs percentages and carcass yield. The caecum, small intestine and large intestine proportions significantly (p < 0.05) increased in chickens fed diets containing probiotic compared to control. For neck, crop, heart, liver, proventriculus, gizzard, pancreas and kidneys proportions among control and experimental groups we recorded no statistical differences (p > 0.05).