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Proteins from wool can be added to the diets of animals to improve their health, AgResearch scientists have shown.
The positive findings in the diets of domestic cats open up exciting possibilities for new uses of sheep wool to improve digestive health for a broader range of animals, and potentially human beings.
The findings have been published and can be accessed below.
Novel animal-derived fibers are of interest for the pet food industry. We here introduce a method for extracting wool proteins using controlled hydrolysis of wool. This results in an appropriate form and we demonstrate its application in pet food using the domestic cat. The effect of the wool hydrolysate on biomarkers of digestive health (e.g., fecal short-chain fatty acids and fecal microbial composition, apparent amino acid (AA) and protein digestibility), are also described.
Find out more“There is a lot of work going on to discover new uses of wool to support the sheep industry in New Zealand,” says Dr Jolon Dyer, AgResearch’s Science Group Leader for Food and Bio-based Products.
“The research is telling us that sheep wool has many useful attributes, and one of those now appears to be proteins derived from the wool that could be used as a dietary supplement to improve digestion and nutrition, and therefore overall health.”
Scientists used a method called controlled hydrolysis to extract the wool proteins, shown to the left under microscope. These protein hydrolysates taken from the wool were then added as an ingredient in a pet food formulation targeted towards cats, and compared against standard cat food formulations.
The findings indicate that the wool protein hydrolysates offer promise as a functional ingredient in pet foods, and also as a new nutritional ingredient in foods generally.
AgResearch senior scientist Dr Santanu Deb-Choudhury, who led the study with fellow scientist Dr Emma Bermingham, says the hydrolysates offer real potential as a supplement for pet diets.
The next steps for the research will be to study the effect of the wool hydrolysate on animals other than cats.
“There’s a lot of potential in terms of how it can add to the wellbeing of pets and other animals, and even people, but we do need to see how it stacks up in the further research,” Dr Deb-Choudhury says.
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