EFFECT OF VARIOUS FORMS OF ZINC APPLIED IN CONCENTRATE MIXTURES FOR BROILER CHICKENS ON ITS BIOAVAILABILITY AS WELL AS MEAT COMPOSITION AND QUALITY

This study focused on evaluation of bioavailability of zinc for broiler chickens from the inorganic (ZnO) and organic (Zn-glycine) forms of chemical bounds of this element. The Zn-glycine applied in mixtures contributed to the decrease of body weight and mortality of chickens, whereas feed conversion rate was similar in either group. On the other hand, in the chickens receiving Zn-glycine from feed, a higher proportion of breast and leg muscles as well as thick flanks in the carcass with their increased dressing percentage were observed. A higher fat content in the breast and leg muscles as well as a higher content of zinc in the breast and leg muscles, liver, kidneys, and the thigh bone were also found.

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eISSN:	2083-6007
ISSN:	1230-0322

W latach 2022-2024 kwartalnik naukowy Polish Journal of Food and Nutrition Sciences realizuje projekt nr RCN/SP/0520/2021/1 finansowany ze środków budżetu państwa – Ministerstwo Edukacji i Nauki w ramach programu „Rozwój czasopism naukowych”. Dofinansowanie wynosi 120 000 zł. W ramach projektu podejmowane są działania zmierzające do podniesienia poziomu praktyk wydawniczych i edytorskich, zwiększenia wpływu czasopism na rozwój nauki oraz utrzymania się czasopism w międzynarodowym obiegu naukowym.

In the years 2022-2024, the scientific quarterly Polish Journal of Food and Nutrition Sciences accomplishes a project no. RCN/SP/0520/2021/1 financed from the state budged – Ministry of Education and Science Republic of Poland in the framework of a program “Development of scientific journals”. The financing amounts to 120,000 PLN. The program aims at improving the level of publishing and editing practices, increasing the impact of scientific journals on science development, and extending the international range of scientific journals.