Comparative Study Of Efficiency And Safety Of Using Of Different Zinc And Copper Sources In Broiler Chicken Feeding For Poultry Meat Production

The paper presents the study on the environmental-biology assessment of different zinc and copper sources in broiler chicken diets. The first experiment included a comparative evaluation of copper sulfate and zinc sulfate, nanoparticles of these metal alloy (ZnCu NP), and Cu and Zn asparaginate. The second experiment implied that copper sulfate was replaced with CuI NP (d=55 +/- 15 nm); CuII NP (d=103 +/- 2 nm); Cu asparaginate. In the third experiment, the ZnSO(4)x7H(2)O in the chicken diet was replaced with Zn NP, with Zn asparaginate. The first experiment revealed the greatest productive effect when using ZnCu NP. The replacement of Cu and Zn sulfates with ZnCu NP was accompanied by the increase in the copper pool in the body by 58.2 % compared to the control and by 39.3 % compared to the use of asparaginate. The differences in the amount of zinc pool in the chicken body made 17.3 and 51.9 %, respectively. In the second experiment, the greatest productive effect was found in the group receiving CuII NP, the efficacy was lower with the use of asparaginates, and the lowest with the feeding of copper and CuI NP sulfates. The highest bioavailability of copper was obtained from CuII NP agent. Upon the conclusion of the third experiment, the highest body weight was observed in the zinc asparaginate group. The value of the zinc pool in the poultry of this group exceeded the level of the control group by 9.5 and by 15.7 % when using Zn NP. The obtained result shows the possibility of using these forms in the industrial production of animal feed.