Histopathology of Hypotrichosis in Calves
- 1 January 1967
- journal article
- research article
- Published by CSIRO Publishing in Australian Journal of Biological Sciences
- Vol. 20 (3), 661-668
- https://doi.org/10.1071/bi9670661
Abstract
The histopathology of the skin in hypotrichosis has been studied for a Jersey calf and comparisons made with normal skin. Other abnormal-ities of the hair follicle have been described in a Hereford mutant. There is considerable variation in hypotrichosis of the calf, as in mice, all forms involving retardation or arrest of the prenatal and early postnatal skin development. A feature of the skin in hypo-trichosis is a high concentration of abnormally complex arteriovenous anastomoses. It is postulated that this abnormality of cutaneous vascular supply is a predisposing factor in the development of the syndrome. The poor development of the hair follicles and associated sweat glands appears to result from insufficiency of the capillary bed. An analogous situation in humans is cutaneous necrosis of the leg as a result of dilatation of the arteriovenous anastomoses. While arteriovenous anastomoses do not appear compensatory to lack of sweat glands, they do provide an alternative thermoregulatory mech-anism which might be effective at moderate environmental temperature.Keywords
This publication has 4 references indexed in Scilit:
- Relationship Between Cyclic Changes in the Hair Follicle and Sweat Gland Size in CattleAustralian Journal of Biological Sciences, 1966
- HAIRLESS GUERNSEY CATTLE: Hypotrichosis—A Non-lethal CharacterJournal of Heredity, 1963
- Developmental Morphology of the Skin and Hair Follicles in Normal and in “Ragged” MiceDevelopment, 1962
- EVALUATION OF DISTURBED HAIR GROWTH IN ALOPECIA AREATA AND OTHER ALOPECIASAnnals of the New York Academy of Sciences, 1959