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,
January 1983 in “Australian journal of biological sciences” Certain amino acid analogues can inhibit wool and hair growth and affect fiber strength.
117 citations,
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,
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,
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,
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.
