Zebrafish Health and Welfare Glossary - Welfare Terms, Head
- Jonathan Knight
- ng3
- Zoltan Varga
HEAD
| Parameter | Welfare Indicators | Sub Category | Synonyms | Definitions
| Severity Score | Picture |
|---|---|---|---|---|---|---|
| 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 caused 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 | Masses under skin | Swellings Raised areas Lumps | Abnormal appearance of masses or all descriptions (hard, soft, different shapes etc.) | Mild: 1 mass under the skin / fins which is not affecting natural behaviour Moderate: Multiple massess under the skin which is not affecting natural behaviour Severe: Multiple massess under the skin and natural behaviour affected | ||
| General | Reddening | Redend area on the head, all of head | Mild: Reddening of head, not affecting development or natural behaviours Moderate: Reddening of head, reduced development compared to controls, able to perform natural behaviours Severe: Reddening of head affecting development and natural behaviours | |||
| General | Small holes | Small holes / eroding pits in the head | ||||
| Eyes | Opacity | Presence of a opaque object in/on the eye | Mild: Opacity of the eyes not affecting natural behaviour or development Moderate: Opacity of the eyes affecting development Severe: Opacity of the eyes affecting development and natural behaviours | |||
| Eyes | Damaged | Lesion (superficial growth or patch of skin not resembling the surrounding area) on/in the eye | ||||
| Eyes | Protruding | Swollen Enlarged | Eye protruding from socket | Mild: Eyes slightly enlarged compared to controls, not expected for strain, not affecting natural behaviour Moderate: Eyes enlarged and slightly protruding, natural behaviour not affected Severe: Eyes enlarged, protruding, reddening around eye, natural behaviour effected |   | |
| Eyes | Swellings | Masses Raised areas Lumps | Abnormal appearance of swellings or all descriptions (hard, soft, different shapes etc.) on the outside of the eye | |||
| Eyes | Bleeding | Bleeding around the eyes | ||||
| Eyes | Bubble formation | Bubbles within the retro bulbar area | ||||
| Eyes | Deformed | |||||
| Macro-opthalamia | Macrophthalamos Big eyes Enlarged Eyes | Abnormal enlargement of one of both of the eyes | Mild: Eyes slightly enlarged compared to controls, not expected for strain, not affecting natural behaviour Moderate: Eyes enlarged and slightly protruding, natural behaviour not affected Severe: Eyes enlarged, protruding, reddening around eye, natural behaviour effected | |||
| Abnormal Shape | Abnormal shape | |||||
| Operculum | Operculum loss | Curled operculum Red gills visable | Operculum loss, leaving gill plates visible |  | ||
| Operculum | Bleeding from the operculum | Bleeding from the operculum | Mild: Red liquid from operculum, no abnormal behaviour or anesthetised Moderate: Red liquid from operculum, increased or decreased operculum movement and not anesthetised Severe: Red liquid from operculum, decreased or increased operculum movement, inactive / lethargic even if provoked (non – responsive) and not anesthatised | |||
| Operculum | Pale gills | Loss of colour within the gill plates | ||||
| Operculum | Reddening of the gills | Increased reddening of the gill plates | ||||
| Operculum | Yellowing of the gills | Yellow colouration of gills | ||||
| Mouth | Gasping | Rapid breathing | Mouth opening and closing rapidly, fish at surface of water | |||
| Mouth | Malformed jaw | Abnormal mouth | Jaws are positioned abnormally | Mild:Malformed jaw, not affecting development or natural behaviours Moderate: Malformed jaw, reduced development compared to controls, able to perform natural behaviours Severe: Malformed jaw, unable to perform natural behaviours, emaciation |  | |
| Mouth | White swelling | Masses Raised areas Lumps | White swelling of cotton appearance | |||