Feeding laying hens Sacha Inchi oil at 3.0–4.5% of their diet reduces their daily feed intake by 10–15% over 56 days, with no change in body weight or how efficiently they produce eggs.
Mechanism
Synthesis from 1 study
The hens eat less because the oil gives them more energy in each bite, so they don’t need to eat as much to make eggs. The fat goes straight into the yolks and tells their bodies they are full, so they stop eating sooner.
Most probable mechanism
When hens eat feed with more unsaturated fat, their bodies absorb the fat and use it to build egg yolks more efficiently. This gives them enough energy without needing to eat as much food. The extra fat also triggers signals in the gut and brain that tell the hen it is full, so it eats less. The hen stays the same weight and keeps laying eggs of the same quality because the fat is used to make bigger yolks instead of being stored as body fat.
Dietary unsaturated fats from Sacha Inchi oil are absorbed intact in the small intestine without significant modification by gut microbes.
Absorbed fatty acids are transported to the liver and packaged into lipoproteins for delivery to developing oocytes.
Lipoproteins deliver fatty acids to the oocyte, where they are incorporated into yolk lipids during vitellogenesis, increasing yolk mass and energy content.
Increased yolk lipid deposition provides sufficient metabolic energy to meet egg production demands, reducing the need for additional feed intake.
Elevated circulating fatty acids stimulate gut-derived satiety hormones that signal fullness to the brain, suppressing appetite and reducing daily feed consumption.
Less supported by current evidence, but not ruled out
The liver converts some of the plant-based fat into longer-chain fats, which may change how the body uses energy and signals fullness, leading to reduced feed intake.
Alpha-linolenic acid enters the liver and activates transcription factors that increase expression of desaturase enzymes.
Desaturase enzymes elongate and modify alpha-linolenic acid into longer-chain n-3 polyunsaturated fatty acids.
Longer-chain n-3 fatty acids are packaged into lipoproteins and deposited into egg yolk.
Altered lipid profiles in circulation may modulate hepatic energy sensing and reduce feed motivation.
Evidence from Studies
Supporting (1)
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Supplementing Sacha Inchi (Plukenetia volubilis) Oil in Laying Hen Diets: Influences on Production Performance, Egg Quality and Fatty Acid Profile
Contradicting (0)
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