> ## Documentation Index
> Fetch the complete documentation index at: https://docs-cbf.growthtak.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Key concepts & glossary
> The core objects and poultry terms used throughout GrowTak.
GrowTak uses a small set of objects and a handful of poultry-industry terms. Understanding these makes the rest of the guide much easier to follow.
## Core objects
A single flock of birds raised at one farm during one growing cycle. The batch is the centre of GrowTak — daily entries, transactions, medicines, lifting, and GC all attach to a batch. A batch is **Active** while the flock is growing and **Closed** after the birds are sold and the farmer is paid.
The person who grows the birds on their farm. A farmer can have many batches over time, but only **one active batch** at a time. Farmers are one type of **Contact**.
Anyone you do business with. **Farmers** grow birds, **Suppliers** sell you chicks/feed/medicine, and **Traders** (customers) buy the grown birds.
Anything bought, sold, fed, or transferred — grouped into three system types: **Bird** (chicks), **Feed**, and **Medicine**. Each product has a base unit and prices.
A day-by-day **standard** growth curve for a breed — expected body weight, feed per bird, mortality %, and FCR at each age. Live batch performance is compared against this profile.
A reusable schedule of which feed and medicine to give on which day of the flock's life. It drives feed projections and the auto-detected feed type in daily entries.
The rule set that decides how much a farmer is paid for a batch — base rate, incentives, penalties, costs, and tax. See [GC schemes](/lifting-gc/gc-schemes).
## Poultry & contract terms
| Term | Meaning |
| ------------------------------- | ------------------------------------------------------------------------------------------------------------------------------ |
| **Placement / Placement date** | The day chicks are placed on the farm — day 0 of the batch. |
| **Mortality** | Birds that die or are removed. Tracked daily, as a count and a percentage of birds placed. |
| **Livability** | The opposite of mortality — the percentage of placed birds still alive. |
| **FCR (Feed Conversion Ratio)** | Kilograms of feed eaten per kilogram of live bird weight. **Lower is better.** A core efficiency measure. |
| **CFCR** | Cumulative FCR — FCR measured across the whole batch to date. |
| **Body weight** | Average live weight of a bird, sampled by weighing a group of birds. |
| **Lifting** | Catching and taking away the grown birds for sale at the end of the cycle. |
| **Feeder leftover** | Feed still left in the feeders, recorded so feed consumption (and therefore FCR) can be reconciled to what was actually eaten. |
| **GC (Grower Contract)** | The amount the company pays a farmer for raising the batch, calculated from performance. |
| **Lifting intent** | A planned lift — birds are weighed/sampled first, then the intent is converted into an actual Bird Sale. |
| **DC number** | Delivery Challan number — the dispatch document reference for a transaction. |
| **Flock code** | The hatchery's batch/flock identifier for the chicks supplied. |
## How the numbers connect
Understanding how these flow together helps make sense of the reports:
* **Birds placed − mortality − birds sold = remaining birds.**
* **FCR = feed consumed (kg) ÷ live weight produced (kg).** GrowTak shows your *actual* FCR next to the *standard* FCR from the bird profile.
* **GC payment** is driven by how your actual FCR, mortality, and cost compare to the scheme's standards — better performance earns incentives, worse performance can incur penalties.
Two FCR figures appear in GrowTak. **Running FCR** (in the live reports) reconciles against feeder leftover as the batch progresses. **Final FCR** (used for GC at closing) is based on total recorded consumption. They can differ slightly — this is expected.