Productivity of broiler chickens using the optimal dosage of zinc proteinate

According to the results of the conducted research, a positive influence of the use of zinc proteinate on the dynamics of live weight and average daily growth of broiler chickens was set. The advantages of using zinc proteinate over sulfate are shown, and the defined prospects of its use in the content of compound feed for broiler chickens are determined. As a result of the conducted research, it was found that feeding zinc proteinate makes it possible to reliably increase the live weight and average daily growth of broiler chickens in different age periods of their growth. Thus, using zinc proteinate in doses corresponding to the input of 50 and 30 g of the element per 1 ton of compound feed increases the live weight of broiler chickens of the second and third experimental groups by 125.7 and 177.7 g or 5.1 and 7.2 %. The average daily weight gain for the entire growing period was: in chickens of the first control group, 58.4 g, in the second experimental group – 61.4 g, and in the third experimental group, 62.6 g. According to the results of the conducted scientific and economic experiment, it was set that the use of zinc proteinate in a dose corresponding to 30 g of the element per 1 ton of compound feed contributes to better use of feed nutrients, which leads to a probable increase in the average daily growth of broiler chickens starting from the second decade of cultivation while reducing costs fodder. Using zinc proteinate in a dose corresponding to 50 g of the element per 1 ton of compound feed also contributes to better use of feed nutrients. However, it leads to a probable increase in the average daily growth of broiler chickens only starting from the third decade of cultivation. According to the results of control weighings, it was found that the live weight of broiler chickens of experimental groups 2 and 3 began to exceed the live weight of broiler chickens of the control group starting from 14 days of age and until the end of fattening (Р < 0.05). The research showed the advantages of introducing zinc to compound feed in the form of proteinate over sulfate. The dose corresponding to introducing 30 g of the element per 1 ton of compound feed is more effective.