Influence of mineral feed additive on productive qualities of broiler chickens

Purpose. To establish the effectiveness of the impact of the new mineral additive "Ostoferol-calcium" on the clinical condition and safety of the livestock, the dynamics of live weight, meat productivity indicators, hematological and biochemical blood parameters of broiler chickens. Materials and Methods. The studies were carried out on broiler chickens of the Ross 308 cross in the conditions of Udmurt Poultry Farm LLC in the Republic of Udmurtia of the Russian Federation. Using the principle of analogues, three groups of day-old chickens of 100 heads each were formed, the experiment was carried out from 1 to 42 days (before slaughter). When carrying out research work, zootechnical, clinical and biochemical research methods were used. Hematological studies were performed in a certified laboratory on automatic biochemical analyzers using an appropriate set of biochemical reagents. The obtained results were processed using software, calculating the mean value (M), standard errors of the mean (±SEM) and determining the significance test of the difference according to Student-Fisher. Results. The content of calcium, magnesium, vitamin D in the blood of birds in the experimental groups was higher: calcium – by 1.16 (34.2%; P≤0.001) and 1.19 mmol / l (34.8%; P≤0.001), mag-nesium – by 0.15 (13.9%; P≤0.05) and 0.17 mmol / l (15.5%; P≤0.01) and vitamin D – by 4.2 (29.8%; P≤0 .01) and 4.3 ng / ml (30.8%; P≤0.01) in comparison with control analogues. By the end of the study, the difference between the chickens of experimental groups I and II and the control counterparts in favor of the experimental groups became significant: in live weight before slaughter – by 233.4 (8.2%; P≤0.001) and 274.5 g (9.8%; P≤0.001). P≤0.001); average daily increase – by 5.9 (9.2%; P≤0.001) and 6.8 g (10.6%; P≤0.001) and absolute increase – by 132.1 (4.9%; P≤0.05) and 173.4 g (6.4%; P≤0.01). Conclusion. These studies indicate a reliable positive effect of the new mineral additive “Ostoferol-calcium” on the clinical condition, livestock safety, live weight dynamics, meat productivity indica-tors, hematological and biochemical parameters of the poultry body. The mineral supplement con-tributed to its enrichment with biologically significant chemical elements, vitamin D, as a result of which redox and metabolic processes were activated, and meat productivity increased. It was con-cluded that it is advisable to use the above-mentioned feed additive in an amount of 1 to 2 liters per 1000 liters of water for feeding broiler chickens on the 6th and 14th days of life.