TLDR Ethionine significantly inhibits wool growth in sheep but not hair growth in mice or rats.
The study investigated the effects of ethionine, a methionine analogue, on wool growth in sheep and hair growth in mice and rats. Sheep received varying amounts of DL-, L-, or D-ethionine either through continuous infusion over 2 days or a single injection. Sucking mice and rats in their first hair growth cycle were given subcutaneous injections of DL-ethionine at different doses. The results indicated that ethionine inhibited wool growth in sheep and hair growth in mice and rats, demonstrating its potential as a growth inhibitor in these species.
5 citations
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January 1983 in “Australian journal of biological sciences” Certain amino acid analogues can inhibit wool and hair growth and affect fiber strength.
117 citations
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November 2006 in “Experimental Dermatology” The article concludes that the wool follicle is a valuable model for studying tissue interactions and has potential for genetic improvements in wool production.
7 citations
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January 1982 in “Acta agriculturae Scandinavica” Mink use L-methionine and L-cystine slightly better than natural amino acids for hair growth, but D-methionine is not effective.
11 citations
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September 2012 in “Journal of animal physiology and animal nutrition” Higher protein diets with DL-methionine improve mink hair growth and fur quality.
3 citations
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October 2022 in “Han'gug dongmul jawon gwahag hoeji/Han-guk dongmul jawon gwahak hoeji/Journal of animal science and technology” Adding L-glutamine to the diet of Hanwoo steers may boost their immune system and help them cope with heat.
