Alexander Mikhailovich Guryanov
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Alexey Alekseevich Vasiliev
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Victor Aleksandrovich Kokorev
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Sergey Vladimirovich Petunenkov
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Alexander Vasilievich Borin
The results of studies to determine the optimal level of input of a complex of macronutrients in protein-vitamin-mineral supplements are given, their influence on digestibility, the use of feed nutrients, hematological parameters, growth and development of young pigs are studied. Feeding in the composition of grain-cereal rations of 12.5% protein-vitamin-mineral supplements with elevated levels of Fe, Cu, Zn, Mn, Co, J, Se contributes to an increase in pigs by 5.5-8.5% of daily gains, by 8-12 days of early maturity, by 0.28-3.35% slaughter yield, by 12.1-19.5% meat ratio. Bringing microelements to the optimum level in protein-vitamin-mineral supplements composition contributes to a significant increase in the digestibility of organic matter and raw fat. Reducing the level of trace elements by 30% hinders the process of digestion of feed. The use of 12.5% protein-vitamin-mineral supplements with a high content of trace elements in grain-cereal rations of pigs has a significant effect on the degree of utilization of nitrogen, calcium, phosphorus, iron, copper, zinc, manganese. When protein-vitamin-mineral supplements are fed with an optimal level of trace elements in the composition of diets of young pigs, it contributes to an increase in the number of erythrocytes, hemoglobin, total protein and its fractions. A 30% increase in the level of trace elements in protein-vitamin-mineral supplements provides for obtaining high-energy meat with a high content of dry matter, protein and fat. The inclusion in the composition of grain-cereal rations of protein-vitamin-mineral supplements with the optimal level of trace elements helps to reduce the cost of feed by 5.2-7.8%, to obtain 3.8 kg of additional growth.
Optimization of microelements in the composition of protein-vitamin-mineral additives for pigs growing
