鹿皮(美國南方)荷仕登乳牛的顏色相關之毛囊發育異常

中文名稱鹿皮(美國南方)荷仕登乳牛的顏色相關之毛囊發育異常
英文名稱Color-linked hair follicle dysplasia in buckskin holstein cows
建立日期2007/11/01
更新日期2007/11/01
中文描述'鹿皮'荷仕登乳牛是棕褐色的和白色眼睛以及鼻口部分帶有正常色素.這些母牛的色素區域有完美,很平順的毛皮,該處短於白毛交界處,營造一三度空間的效果.這是毛皮顏色連接毛囊發育不良並且似乎可以傳給後代:因為大約百分之五十的受影響母牛的小牛有類似的發育不良,大概是體染色體顯性性徵.這顏色會有所差異出現在非正統血統(grade分級)的母牛並且此性徵基因起源是未知的.
英文描述'Buckskin' Holstein cows are tan and white with normal pigmentation of the eyes and muzzle. Pigmented regions of these cows have a fine, very-smooth haircoat which is much shorter than the white hair bordering it, causing a three-dimensional effect. This is a coat-color-linked hair follicle dysplasia and appears to be transmitted to offspring: because about 50% of calves of affected cows have a similar dysplasia, probably an autosomal dominant trait. This color variant has appeared in non-registered (grade) cows and the genetic origin of the trait is not known.

疾病類型

動物種類

關鍵詞

疾病症狀

【皮膚系】
  • 毛髮色素減退, 全身性或局部性