blackhead disease

传染性肠肝炎, 黑头病

English-Chinese Dictionary of Agriculture (英汉农业大词典). 2013.

Look at other dictionaries:

  • Blackhead disease — (also known simply as blackhead ) is a commercially important avian disease that affects chickens, turkeys and other poultry. The disease carries a high mortality rate and affects the liver and cecum. It is a form of histomoniasis caused by the… …   Wikipedia

  • blackhead disease — noun 1. : a disease of the banana caused by eelworms of the family Tylenchidae 2. : a rot of the banana rootstock caused by a fungus (Thielaviopsis paradoxa) …   Useful english dictionary

  • Blackhead (disambiguation) — Blackhead can also refer to:In biology: *Blackhead, a blocked sweat/sebaceous duct of the skin known medically as an open comedo. *Blackhead disease, which affects poultry.Place names: *Blackhead Range, a mountain range in the northern Catskills… …   Wikipedia

  • blackhead — [blak′hed΄] n. 1. any of various black headed birds, esp. the scaup duck 2. a black tipped plug of dried fatty matter in a pore of the skin ☆ 3. an infectious disease of the intestines and liver of turkeys, chickens, etc. caused by a protozoan… …   English World dictionary

  • Blackhead — This article is about the skin condition. For other uses, see Blackhead (disambiguation). Blackhead Classification and external resources Blackheads on a nose. ICD 9 …   Wikipedia

  • blackhead — /blak hed /, n. 1. a small, black tipped, fatty mass in a skin follicle, esp. of the face; comedo. 2. any of several birds having a black head, as the greater scaup, Aythya marila. 3. Also called enterohepatitis. Vet. Pathol. a malignant,… …   Universalium

  • disease — I (New American Roget s College Thesaurus) Condition of ill health Nouns 1. disease, illness, sickness, ailment, ailing; morbidity, infirmity, ailment, indisposition; complaint, disorder, malady; functional disorder. 2. condition, affliction,… …   English dictionary for students

  • Blackhead — A familiar term for what is medically called an open comedo. A comedo, the primary sign of acne, consists of a dilated (widened) hair follicle filled with keratin squamae (skin debris), bacteria, and sebum (oil). An open comedo has a wide opening …   Medical dictionary

  • blackhead — noun Date: circa 1837 1. a small plug of sebum blocking the duct of a sebaceous gland especially on the face 2. a destructive disease of turkeys and related birds caused by a protozoan (Histomonas meleagridis) that invades the intestinal ceca and …   New Collegiate Dictionary

  • blackhead — black•head [[t]ˈblækˌhɛd[/t]] n. 1) pat a small, black tipped fatty mass in a skin follicle, esp. of the face; comedo 2) orn any of several birds having a black head 3) vet an intestinal and liver disease of turkeys, chickens, and related birds,… …   From formal English to slang

  • blackhead — /ˈblækhɛd / (say blakhed) noun 1. a small black tipped, fatty mass in a follicle, especially of the face. 2. any of several birds having a black head, as the scaup. 3. Veterinary Science a malignant, infectious, protozoan disease of turkeys,… …   Australian English dictionary

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