THE EFFECT OF PROBIOTIC FROM BACILLUS SUBTILIS STRAINS ON THE MINERAL AND VITAMIN COMPOSITION OF POULTRY PRODUCTSTHE EFFECT OF PROBIOTIC FROM BACILLUS SUBTILIS STRAINS ON THE MINERAL AND VITAMIN COMPOSITION OF POULTRY PRODUCTSTHE EFFECT OF PROBIOTIC FROM BACILLUS SUBTILIS STRAINS ON THE MINERAL AND VITAMIN COMPOSITION OF POULTRY PRODUCTSTHE EFFECT OF PROBIOTIC FROM BACILLUS SUBTILIS STRAINS ON THE MINERAL AND VITAMIN COMPOSITION OF POULTRY PRODUCTSTHE EFFECT OF PROBIOTIC FROM BACILLUS SUBTILIS STRAINS ON THE MINERAL AND VITAMIN COMPOSITION OF POULTRY PRODUCTSTHE EFFECT OF PROBIOTIC FROM BACILLUS SUBTILIS STRAINS ON THE MINERAL AND VITAMIN COMPOSITION OF POULTRY PRODUCTSTHE EFFECT OF PROBIOTIC FROM BACILLUS SUBTILIS STRAINS ON THE MINERAL AND VITAMIN COMPOSITION OF POULTRY PRODUCTSTHE EFFECT OF PROBIOTIC FROM BACILLUS SUBTILIS STRAINS ON THE MINERAL AND VITAMIN COMPOSITION OF POULTRY PRODUCTS
Authors:   Yakutsk Research Institute of Agriculture, Stepanova A.M. 
Published: February 2021

The production of high-quality and environmentally friendly products is one of the urgent problems of industrial poultry farming. We have developed a probiotic preparation "Nord-Bact" based on bacterial strains Bacillus subtilis TNP-3 and Bacillus subtilis TNP-5 isolated from the permafrost soils of Yakutia for use in industrial poultry farming, starting with the processing of hatching eggs, including its use on young animals, chickens hens for the preservation, prevention and treatment of dysbacteriosis caused by pathogenic and opportunistic microflora. The aim of the work is to study the effect of the probiotic “Nord-Bact” on the mineral and vitamin composition of poultry products. Production tests were carried out at the Yakutsk Poultry Factory on 30 thousand laying hens of 45-46 weeks of age. Experienced groups of chickens took “Nord-Bact” probiotic at 5x107 CFU/bird daily, only with a difference in the timing of application: I - every 10 days for 2 months in a row, II - for 2 months. The control group did not take the probiotic. Also, young birds from 1 day old to 30 weeks of age in the experimental group received probiotic with water at the rate of 5x107 CFU/bird daily for 10 days every month in a row until the end of the experiment. All experiments were carried out on birds of the egg farming cross Rodonit-3. For biochemical studies, at the end of the experiments, samples of meat from pullets of 30 weeks of age and egg products from laying hens were taken. According to the results of the studies, it was found that after the application of the “Nord-Bact” probiotic in poultry meat, the content of the main macro and microelements (calcium, magnesium, phosphorus, iron, iodine, manganese, cobalt, copper, selenium, fluorine and zinc) and vitamins B12, A, E reliably rises compared with control. The use of the drug for laying hens markedly increases the amount of macro- and microelements, vitamins in the contents (white, yolk) and eggshells, compared with the control group. The use of the “Nord-Bact” probiotic in laying hens at a dose of 5x107 CFU/ bird for 10 days 2 months in a row increases the content of calcium, magnesium in the shell by 31% and phosphorus by 23%, and a significant increase of iron and vitamin A - by 12%, sodium - by 11%, magnesium - by 10%, potassium - by 6% and calcium - by 1.5% in the yolk compared to the control was also noted.