Zebrafish Health and Welfare Glossary - Welfare Terms, Abdomen

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Welfare Terms

ABDOMEN

Parameter	Welfare Indicators	Sub Category	Synonyms	Definitions	Severity Score
Anus	Bleeding			Presence of considerable blood in stools or from anus
Scales / Skin	Lesion		Wound
		Open - Abrasion		Damage to the skin consisting of loss of the epidermis and portions of the dermis but not the complete thickness of the skin	Mild: *No more than 10% of body Moderate: Covering not more than 20% of body Severe: Covering more than 20% of body, open
		Open - Incision		A wound created by a sharp object. Edges are smooth and trauma to surrounding tissue is minimal.	Mild: *No more than 10% of body Moderate: Covering not more than 20% of body Severe: Covering more than 20% of body, open
		Open - Laceration		An irregular wound created by tearing of tissue. Damage to both superficial and underlying tissue is variable.	Mild: *No more than 10% of body Moderate: Covering not more than 20% of body Severe: Covering more than 20% of body, open
		Open - Puncture		A penetrating wound cause by pointed object	Mild: *No more than 10% of body Moderate: Covering not more than 20% of body Severe: Covering more than 20% of body, open
		Closed - Contusion		Damage of the skin and/or underlying structures without breaking the skin e.g. Bruising, crush	Mild: *No more than 10% of body Moderate: Covering not more than 20% of body Severe: Covering more than 20% of body
Skin	Swelling Under Skin		Masses, Raised Areas, Lumps	Abnormal appearance of masses or all descriptions (hard, soft, different shapes etc.)	Mild: 1 mass under the skin which is not affecting natural behaviour Moderate: Multiple massess under the skin which is not affecting natural behaviour Severe: Multiple masses under the skin and natural behaviour affected
General	Oedema			An excessive accumulation of fluid in tissue spaces or a body cavity.	Mild: *Oedema - low level and highly localised fluid accumulation in tissue Moderate: Oedema - increased fluid accumulation in one or many tissues Severe: Oedema - high fluid accumulation in one or multiple tissues
General	Distended		Enlarged	Abdomen appears curved outward or swollen	Mild: Abdomen marginally distended Moderate: Abdomen distended and reddening Severe: Abdomen distended, reddened, unable to maintain skilful and effective interaction of movements and maintenance of equilibrium
		Soft	Fluidy	Abdomen feels soft and fluid to touch
		Hard	Solid	Abdomen feels hard to touch
Anus	Faeces staying on fish			Faeces hanging from anus for an extended period of time