Fortification of meat products of geese farming with lithium by introducing it into poultry mixed feed

English. Saabunud / Received 29.12.2021 ; Aktsepteeritud / Accepted 25.04.2022 ; Avaldatud veebis / Published online 25.04.2022 ; Vastutav autor / Corresponding author: Olexander Sobolev; [email protected]

English. We studied the possibility of fortification of goslings’products with lithium and peculiarities of its depositing in the organs andtissues of goslings concerning lithium level in the mixed feed.Experimental studies have been conducted on the goose breed Legart. 320one-day-old goslings were divided on the principle of analogues into fourgroups, 80 heads each. The goslings of the first control group did notreceive the lithium supplement with the feed mix. Experimental groupswere fed with the feed where additionally was supplemented with differentdoses of lithium by the scheme of the experiment. After 70 days of rearing,three birds were randomly selected from each group and controlslaughtered. The lithium content in the representative samples of muscletissue and organs of goslings was determined by inductively coupledplasma-atomic emission spectrometry (ICP-AES). It was established thatfeeding the growing goslings with mixed feed containing lithiumsupplements in doses of 0.05, 0.10 and 0.15 mg kg–1, contributed to theincrease (P <0.001) of the concentration of this trace element in themuscles of the thigh and drumstick 789.5, 1589.5 and 3447.4%, in themuscles of the breast 1096.8, 2080.6 and 3948.4%, liver are 455.4, 824.6and 1440.8% respectively, compared to goslings that did not receivelithium supplements. Significant high values of lithium accumulationfactors in organs and tissues of gosling (3.21–14.44) indicated that thiselement has a substantial accumulating capacity. The meat of goslingsenriched with lithium can be considered a natural product with bio-corrective action that can be used in human nutrition. These meat productscan be particularly useful for people that are living in regions with a lowenvironmental level of lithium.