On large farms, laying hens are usually kept in cages, lack of exercise makes poultry prone to osteoporosis, which accounts for?20-35% of all poultry deaths. Vitro experiments shown that?fatty acids, especially Ω-3?unsaturated fatty acids, promote the absorption of minerals by bones, thereby increase bone density.
One of the?mechanisms by which?Ω-3?promotes bone metabolism is to alter the production of arachidonic acids, especially prostaglandin?PG, which are converted from polyunsaturated fatty acids.?[1]
In one study, the addition of Schizochytrium algae powder to feed promoted egg production in laying hens and increased the level of Ω-3 in yolk, reducing Ω-6/Ω-3?value.?[2]

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[1] Impact of feeding microalgae (Aurantiochytrium limacinum) and co-extruded mixture of full-fat flaxseed as sources of n-3 fatty acids

[2] Applications of microalgal paste and powder as food and feed_ An update using text mining tool