Тhe effect of the feed additive Butitan (Farmatan BCO) on the histophysiological state of the intestinal tube and the productive qualities of broiler chickens

 The effect of the feed additive Butitan (Farmatan BCO) on the productive qualities and structure of the intestinal wall of broilers was studied. Daily broilers are divided into groups of 60 heads. The control group received the main diet. The experimental groups received Butitan supplements with the main diet: 1st experimental group — 250 g/t, 2nd experimental — 500 g/t and the third — 750 g/t. The duration of the experiment was 42 days. The live weight and feed 3rd were taken into account. Upon reaching 42 days poultry was slaughtered, anatomical cutting and samples were taken for  histological studies. A chemical analysis of the pectoral and leg muscles was performed. In terms of live weight, the poultry of the experimental groups exceeded the control groups by 7,9% (P ≤ 0.05), 8,2 (P ≤ 0.01) and 8,1% (P ≤ 0.01). At the same time, feed costs per 1 kg of growth are lower by 2,4%; 3,8% and 1,4% respectively in the first, second and third experimental groups. In the experimental groups the weight of the gutted carcass increases by 6,7–15,0%. There is a tendency to increase the fat content in the pectoral muscles of birds of the experimental groups. Histological methods revealed that in the duodenum of broilers, the height of the villi layer and the thickness of the intestinal wall decreased with better preservation of the epithelium and greater severity of the lymphoid tissue. In the jejunum and proximal part of the caecum, the height of the villi layer is higher on average by 11,1 and 19,3%. However, better preservation of the epithelial lining was observed in the jejunum. The villi are involved in the absorption of nutrients and contribute to the effective use of the diet. Therefore, all the experimental groups had a large live weight with lower feed costs compared to the control. 

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