Sheep can lose wool quickly due to stress, but it doesn't cause itching or pain.
4 citations
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March 2016 in “Small ruminant research” Vicuña wool's quality is due to a high density of fine secondary hair follicles, and their skin glands may be used for communication.
January 2011 in “Maofang ke-ji” Rabbit hair research improved its use in textiles and new applications.
January 2012 in “International Journal of Trichology” Two siblings have a rare genetic condition causing curly, coarse hair.
1 citations
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January 1990 Melatonin makes cattle hair grow faster. Better farming methods improved Pakistan's cotton industry.
17 citations
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November 2017 in “Asian-Australasian journal of animal sciences” Certain gene mutations are linked to wool quality in sheep and could help in breeding for better wool.
January 2012 in “Zhongguo shouyi xuebao” Sheep breeds show different keratin gene expression in the groin, linked to hair follicle density.
2 citations
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January 2023 in “Frontiers in Genetics” Overexpressing ovine β-catenin in mice skin increases hair follicle density and growth.
191 citations
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November 1959 in “Annals of the New York Academy of Sciences” Hair and wool have complex microscopic structures with microfibrils and varying cystine content.
June 2026 in “Studia Biologica” Felted wool in these sheep has more sweat and bacteria, altering its fatty acids and making it more prone to felting.
July 2022 in “New Zealand journal of agricultural research” The KRTAP27-1 gene variations in sheep may affect wool length and weight.
9 citations
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June 2024 in “Genes” Key genes linked to wool quality in Spanish Merino sheep can improve fine wool production.
18 citations
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January 2015 in “Journal of medical genetics” New genes linked to woolly hair have been found, which could help treat it and change hair texture.
2 citations
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January 2010 Tianzhu white yak hair varies in structure and density between fuzz and coarse hair.
September 2017 in “Korean journal of acupuncture” Crataegi Fructus water extract helps hair grow better and thicker.
9 citations
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December 2022 in “Genes” CNVs influence hair length in Tianzhu white yaks.
November 2022 in “Animal Bioscience” Adding methionine to a low-protein diet helps Angora rabbits grow better fur.
1 citations
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January 2012 in “International journal of trichology” Sheep hair follicle cells can grow a lot but need the dermal papilla to do so.
January 2005 in “Jukuri (Natural Resources Institute Finland (Luke))” A low-protein diet with methionine is cost-effective and supports normal growth and high-quality pelts in blue foxes.
January 2009 in “Chinese journal of Clinical Medicine” 58 citations
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December 1992 in “British Journal of Dermatology” Rat hair follicles grow longer in vitro, but certain factors can inhibit this growth.
January 2026 in “Frontiers in Animal Science” Gentile di Puglia sheep have finer wool and more lanolin than Sarda sheep.
1 citations
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July 1935 in “Nature” Animal hair can curl tightly on its own, especially in foxes, due to changes in keratin.
20 citations
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January 1979 in “JAMA” Fiber implantation for baldness is not recommended because it causes many problems and doesn't work well.
48 citations
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July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair growth is controlled by specific gene clusters and proteins, and cysteine affects hair gene expression in sheep.
January 2022 in “Figshare” Melatonin affects specific gene patterns and biological processes in goat hair growth.
24 citations
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October 2019 in “Genes” A new sheep gene, KRTAP36-1, may help breed sheep with better wool by reducing prickle factor.
25 citations
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December 1991 in “The Journal of Dermatology” Cyclosporin A promotes hair growth in young nude mice.
14 citations
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January 2020 in “PloS one” Timing of light therapy affects horse coat growth, with photoperiod being crucial.