TLDR Boxer and Labrador dogs' hair growth is affected by the tropical climate, but Schnauzers' is not.
The study investigated the hair follicle activity of 21 male dogs from three breeds (Boxer, Labrador, and Schnauzer) in Viçosa, Brazil, over 12 months. It found that Boxers and Labradors had a higher percentage of telogen hairs during hotter months and more anagen hairs during colder months, with mean telogen percentages of 93% and 90%, respectively. This indicated a significant correlation between hair cycle and environmental temperature and photoperiod for these breeds. However, Schnauzers, with a mean telogen percentage of 55.3%, did not show significant seasonal variation in hair cycle phases. The study concluded that the hair cycle of Boxer and Labrador dogs is influenced by environmental factors in a tropical climate, unlike Schnauzers.
Cited in this study
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20 citations
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September 2002 in “Journal of Investigative Dermatology” Researchers found that hair shedding happens mostly when new hair is growing and involves a unique process.
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June 2001 in “Endocrinology” Prolactin affects when mice shed and grow hair.
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May 2022 in “Frontiers in Cell and Developmental Biology” Hair growth and health are influenced by factors like age, environment, and nutrition, and are controlled by various molecular pathways. Red light can promote hair growth, and understanding these processes can help treat hair-related diseases.
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January 2016 in “Journal of Investigative Dermatology” The research created a model to understand human hair growth cycle, which can help diagnose and treat hair growth disorders and test potential hair growth drugs.
