# Event Resources
A herd management resource is an event-type resource identified by an event_id, which must also
match an existing sow (with gestal_id), that are generated and synchronized by the Gestal system.
They can be easily accessed trough integration installations but cannot be modified (read-only access).
# Parameters
Basic parameters and queries are supported.
# Common attributes
Most herd management resources share the same base set of attributes.
| Attribute | Type | Description |
|---|---|---|
event_id | string | The unique ID for an event, either from Gestal or the Integrator. |
gestal_id | 64 bit integer | The Gestal system unique ID for a sow. |
event_at | datetime | Date and time at which the event occurred. |
event_type | string | The event type, can be: abortion, breeding, cull, heat, litter, piglet_death, piglet_movement, pre_wean, preg_check, sow_movement, weaning or weighting. |
parity | integer | The sow's parity for the event. |
user | string | The user from the Gestal system that created the event. |
batch | string | The batch in which the event took place. |
gestal_modif | 64 bit integer | Last time the event was updated in the Gestal system. |
deleted_at | datetime | Date and time at which the event was deleted. This is used to delete an event in the api. |