Iron nanocysteinates in diets with activated feed for meat-based chickens

The results of evaluating the effect of different sizes of iron cysteine nanoparticles as an alternative to using inorganic iron in poultry diets to ensure mineral balance are presented. It has been established that replacing the inorganic salt FeSO4·7H2O with iron nanocysteinate of 20 and 100 nm in size in the diets of meat-egg chickens has a positive effect. The live weight of young animals in the group using iron nanocysteinate with a particle size of 20 nm exceeded the control by 33.3% and 100 nm by 31.6%. Using iron nanocysteinate with a particle size of 300 nm decreased the indicator by 17.5%. The combined use of activated grain and chelates increases poultry productivity. Thus, the average daily increases were higher by 8.6 – 10.7 – 19.5% for the compared experimental groups. Over the 40 days of raising chickens on activated feed, the average live weight in the control was 552.0 g. The addition of iron nano chelates increased indicators in the 6th and 7th groups by 148 and 156 g, respectively, or by 21.2 and 22.0%. At the same time, in group 8, chickens were stunted in growth compared to the control and groups 6–7, where the particle sizes of iron nanocysteinate were 20 and 100 nm. Iron chelates' role in forming average daily growth on non-activated and activated backgrounds is identical and varies between 3.2–3.4 g in groups 2 and 3; 6 and 7. When comparing similar pairs of groups raised on non-activated and activated feeds with the same addition of iron nanocysteinate, the indicators were higher in young poultry growing on activated feed: groups 2 and 6 - by 8.6%; 3 and 7 – by 10.7%; 4 and 8 – by 19.5%.

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