Hello to you all. I'm a beginner with ODOO and I would like to submit a request to your attention.

The problem I have to solve regarding a small industry that work beef meat. The most important aspect is the trackability of the meat. I had installed some modules.. Purchase, Inventory, Manufacturing, Sales.

They buy cows with a ID attached for each one and they read this value when animals arrive at the gate..

The production process consist in cut the cow in some parts and at the end they have 2 half of the cow, interiors and some part of scrap. Every piece should be recognize with the same value of the ID from we start (the cow).

For instance they buy a cow of 600kg and at the end of the production they obtain 1 half of 210kg, 1 half of 220kg, 80kg of interiors and 40kg of scrap (difference is blood we lost).

They buy and sell with a number of pieces (cows in input and half in output) and with a value per kg. So if they sell 1 half to a customer A for 210kg and 1 half to a customer B for 220kg in the document we have to indicate 1pcs for each one with the related value of the ID and the weight for have a price. So I need to know how many pieces (COW and HALF) I treated, but the most important unit of measure is the unit of weight.

I try in 2 different ways.

1. Create single Product (COW for Purchase module and HALF for the sell module) and in the Purchase Order when arrive the material I make a list of each animal's ID with an unique LOT number.

2. Create a different Product for each animal (COW and for each HALF) with the ID associated but in this case I have to enter many times the same LOT value for each pieces arriving from the same COW.

The question is: which one is the best.. or could you suggest me another solution?