Contemporary highly productive laying chickens are able to lay more than 330 eggs per year. To this end, they should be fed properly. Ration for chickens is developed by specialists of the All-Russian Research and Technology Institute of Poultry Keeping.
Full-value nutrition for chickens should be sufficiently rich in calories and to contain all amino acids, macro- and microelements, vitamins and other biologically active substances required by birds. Mixed fodder based on corn and soy bean is used abroad. However, wheat, barley, bran, rye and other substances that contain hardly degradable components are added to chicken’s mixed fodder in Russia. The mass of rough cellulose slows down the fodder throughput rate, and chickens walk with stomachs filled up with semi-digested fodder. This is not rational from physiological perspective. The fodder should be assimilated quickly and as fully as possible. Besides, roughage causes upset stomach with chickens, and sticky adhesive excrement deteriorates microclimate at the poultry farm and creates environmental threat there. For chickens to assimilate indigestible polysaccharides, they need enzymatic agents.
The researchers have checked the action of several food supplements that were created to help chickens to digest fodder assimilable with difficulty. The supplements included fodder antibiotic - flavomycin, which restrains propagation of opportunistic bacteria that inhabit the intestines, thus leaving alive lactobacilli and Bifidobacteria; brucella bacterial preparation, which promotes assimilation of rations with increased content of barley, rye, wheat, bran, sunflower cake and oilssed meal. The researchers have also tested Prebio – the inulin-based preparation for treatment of dysbacteriosis and gut organisms restoration, and XYBETEN-CEL – the enzymatic agent that decomposes polysaccharides assimilable with difficulty. All preparations were added to mixed fodder, which contained 30% of naked oats. Although naked oats contain less cellulose than ordinary oats, it is rich in beta-glucans assimilable with difficulty.
The fodder with supplements was better assimilated by chicken than the one without supplements, and the researchers managed to achieve better laying ability. Besides, the weight of eggs laid by chickens from the experimental groups was higher by 0.9% to 3%. The best results were achieved by poultry farmers when supplementing XYBETEN-CEL in comlex with flavomycin and when adding flavomycin.
Sometimes non-traditional biologically active substances although increase chicken productivity may impact negatively the egg quality. This has not occurred in the case under consideration. The experimental birds showed even increased concentration of the À and Å vitamins in the yolk.
It has turned out that chicken can be fed not by corn and soy bean mixture but by naked barley and wheat, if enzymes, fodder antibiotics and acidulants are added to the mixed fodder. Our chickens seem to have finally passed from ordinary fodder to nourishing mixtures.